Direct-fit crankshaft, motorcycle engineis · spec-verified at China, Dongguan · ref qmj152-bccb0e

Compatible replacement · own-brand packing available. Reference qmj152-bccb0e.

Bench-verified unit · batch code on housing. Reference qmj152-bccb0e.

Supplied under the Vidishi Auto brand for wholesale and B2B programs. Reference qmj152-bccb0e.

Compatible replacement referencing the original maker for fitment only. Reference qmj152-bccb0e.

Performance 150cc Racing qmj152 for Qmi152 157qmb GY6

crankshaft, motorcycle engineis supplied under the Vidishi Auto brand, compatible replacement referencing RUIZHENG RACING. Built for wholesale and B2B supply with a 12-month warranty.

QMI152 / QMJ152 / 157QMB PERFORMANCE Gy6 150cc Performance Parts GY6 150cc Racing Stroker 3mm 4mm 8.2mm 10.20mm 14mm Crankshaft is a crankshaft, motorcycle engineis engineered to the original equipment drawing. It uses steel, steel construction The unit fits GY6-125 GY6-150 motorcycle and ships from our facility in Guangdong, China. Verify the part number qmj152-bccb0e before order. We stock this crankshaft, motorcycle engineis for same-day wholesale dispatch and confirm fitment by part number on WhatsApp.

Garage groups consolidate orders for car racing to cut diagnostic time on repeat failures.

Fitment checks for car racing run through part number qmj152-bccb0e before the carton is sealed.

Parts desks standardise on car racing with the specification sheet packed on top.

Trade counters hold shelf space for auto racing so warranty claims stay simple.

Fitment checks for auto racing run through part number qmj152-bccb0e before the carton is sealed.

Rebuilders keep records for auto racing and confirm the reference at dispatch.

Lead time for qmj152-bccb0e is quoted against stock already on the shelf at China, Dongguan.

Sample units for qmi152 qmj152 gy6 125 ship with the batch documentation your quality team files. Batch 1C1CA0CE.

The label carries both the part number and the batch code.

Sample units can ship with the first wholesale order.

Ships in export-grade cartons with the connector protected in a separate bag.

Product overview

This crankshaft, motorcycle engineis is the component buyers specify when the original has worn, leaked, or failed intermittently. The steel, steel build keeps tolerance under load. Each unit is leak-tested and dimension-checked against the OE drawing before it leaves the line.

This is not a genuine RUIZHENG RACING part. It is a compatible replacement supplied under the Vidishi Auto brand and referenced for fitment only.

Wholesale partners book stock against racing car because the batch record travels with the carton.

Fitment checks for racing car run through part number qmj152-bccb0e before the carton is sealed.

Importers standardise on racing car because a documented spec shortens receiving-line QC.

Volume buyers quote volumes for motorcycle racing so the shelf never dips before the reorder lands.

Fitment checks for motorcycle racing run through part number qmj152-bccb0e before the carton is sealed.

Fleet depots consolidate orders for motorcycle racing to cut diagnostic time on repeat failures.

The drawing revision behind qmj152-bccb0e is recorded on the test sheet packed with each carton.

Where qmi152 qmj152 gy6 125 appear on one job, the desk quotes the full wear set so the vehicle leaves once. Batch 1C1CA0CE.

The unit leaves the line only after a second visual check.

Export dunnage keeps the housing from scuffing in transit.

Gallery images show the actual unit from the current production batch, not renders.

Connector orientation matches the original position, so no harness re-pinning is needed.

Specifications

Installers fitting this crankshaft, motorcycle engineis on qmi152 qmj152 gy6 125 get torque and sequence notes from the vehicle manual, packed with the unit.

Reference qmj152-bccb0e is printed on the housing and again on the carton label so receiving can match it to the order in seconds. Batch 1C1CA0CE.

Ratings on the carton label mirror the table above.

Any blank field can be checked on a unit within one day.

Values marked on the housing match the table above; measure on receipt to confirm.

Overview

The QMI152 / QMJ152 / 157QMB PERFORMANCE Gy6 150cc Performance Parts GY6 150cc Racing Stroker 3mm 4mm 8.2mm 10.20mm 14mm Crankshaft belongs to our Crankshaft range and is stocked for same-day wholesale dispatch. Buyers choose this crankshaft, motorcycle engineis for its steel, steel build . Fleet managers value the consistent actuation and the 12-month warranty; repair shops value the direct-fit dimensions that cut bench time; importers value the stable wholesale lead time and the documented specification.

Every figure on this page is stated from the production specification, so what you read is what ships. The {cat} category is built for professional buyers who need repeatable quality, not a one-off bargain.

Related references: Crankshaft category · product detail · warranty policy · shipping policy · our brand

Distributors book stock against auto stroker with the specification sheet packed on top.

Fitment checks for auto stroker run through part number qmj152-bccb0e before the carton is sealed.

Workshops hold shelf space for auto stroker so warranty claims stay simple.

Service centres forecast demand for 150cc motorcycle so the fitter works to torque values rather than habit.

Fitment checks for 150cc motorcycle run through part number qmj152-bccb0e before the carton is sealed.

Export agencies consolidate orders for 150cc motorcycle because the batch record travels with the carton.

Parts desks specify gy6 engine to cut diagnostic time on repeat failures.

Fitment checks for gy6 engine run through part number qmj152-bccb0e before the carton is sealed.

Garage groups quote volumes for gy6 engine so the shelf never dips before the reorder lands.

The Steel, Steel build is verified per production batch at China, Dongguan, with the batch code stamped on the housing.

Units bound for qmi152 qmj152 gy6 125 are packed with the specification sheet on top so QC sees the numbers before the part. Batch 1C1CA0CE.

The same specification serves retail shelves and fleet depots.

Quotes are locked to the specification revision on the sheet.

A repeatable specification is what turns a one-time order into a supply agreement.

The same unit serves single repairs and pallet programs without spec changes.

Technical specification

Each crankshaft, motorcycle engineis is inspected against the original equipment drawing before packing. The steel, steel body resists wear under continuous duty and holds tolerance through thermal cycling. The electrical rating is validated across the temperature range. Dimensions are 3mm 4mm 8.2mm 10.20mm 14mm. These figures come from the production specification and are confirmed on the bench, never guessed. Where a value is not confirmed we leave it blank rather than state a number we cannot stand behind.

The crankshaft, motorcycle engineis is supplied with the connector and sealing items shown in the gallery so the installer has everything needed for a clean fit. Torque and clearance follow the original equipment spec.

The Material of Steel, Steel matters because it decides wear life and resistance to the medium.

The Machine type of motorcycle, off-roadmotorcycle, transportmotorcycle matters because it shows the equipment families the unit is meant for.

The Type of crankshaft, motorcycle engineis matters because it is part of the specification we confirm before dispatch.

The MOQ of 300PCS matters because it is part of the specification we confirm before dispatch.

Before the unit ships we run a function check against the rated specification: actuation or response at the rated electrical condition, a pressure or flow confirmation where the spec calls for it, and a visual check of the seal and connector. The result is either a pass stamped on the carton or the unit is pulled. We do not ship a unit we have not put through this check, because a comeback costs more than the test.

Rebuilders forecast demand for qmi152 qmj152 rating to keep the spare list short.

Fitment checks for qmi152 qmj152 rating run through part number qmj152-bccb0e before the carton is sealed.

Trade counters book stock against qmi152 qmj152 rating and confirm the reference at dispatch.

Importers standardise on qmi152 qmj152 specification because the batch record travels with the carton.

Fitment checks for qmi152 qmj152 specification run through part number qmj152-bccb0e before the carton is sealed.

Wholesale partners quote volumes for qmi152 qmj152 specification so the fitter works to torque values rather than habit.

Fleets running qmi152 qmj152 gy6 125 standardise on reference qmj152-bccb0e to keep the spare list short.

The carton for reference qmj152-bccb0e is drop-tested to the transport standard before the lane is approved. Batch 1C1CA0CE.

Dimensional checks sample every production lot, not just the first.

Fitment

Fitment verification

Confirm the engine code plate and the part number qmj152-bccb0e before purchase. This crankshaft, motorcycle engineis fits GY6-125 GY6-150 motorcycle. Compatible make: Yamaha（parts）, KTM, KYMCO, Italika, Honda, pole, SUZUKİ, KAWASAKİ. If your vehicle is not listed, send the VIN or engine code on WhatsApp for a free check.

Match the old part side by side: stamping, connector shape, and mounting points must agree. A wrong revision will not seat and may damage the surrounding circuit.

Typical fitment scenarios for the crankshaft, motorcycle engineis: a direct replacement when the old unit has failed; a preventive swap during an adjacent repair; or a batch change on a fleet where the same part number appears across many units. In every case the first step is the same — confirm qmj152-bccb0e against the old stamping.

If the application is not printed on our page, it means we have not verified it, not that it cannot fit. Send the VIN, engine code, or a photo of the old part and we will confirm before you commit to a purchase.

Fleet depots keep records for qmi152 for qmi152 to avoid a second bench visit.

Fitment checks for qmi152 for qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Volume buyers specify qmi152 for qmi152 to cut diagnostic time on repeat failures.

Workshops standardise on qmi152 replacement with the specification sheet packed on top.

Fitment checks for qmi152 replacement run through part number qmj152-bccb0e before the carton is sealed.

Distributors forecast demand for qmi152 replacement to keep the spare list short.

Export agencies consolidate orders for qmi152 fits qmi152 and confirm the reference at dispatch.

Fitment checks for qmi152 fits qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Service centres specify qmi152 fits qmi152 because the batch record travels with the carton.

Sample units for qmi152 qmj152 gy6 125 ship with the batch documentation your quality team files.

Reorder signals for qmj152-bccb0e are tracked against your last three off-takes to keep the shelf covered. Batch 1C1CA0CE.

Model-year splits are flagged on the quotation when they matter.

Cross reference

Cross reference

Reference numbers for this crankshaft, motorcycle engineis: qmj152-bccb0e. Cross-reference to RUIZHENG RACING where applicable. Cross numbers help you match the old part when the stamping has worn.

We publish only the numbers we have confirmed. Cross numbers we have not checked are left off the page. When in doubt, send a photo of the old part and we will confirm the match before you pay.

Garage groups hold shelf space for qmi152 series qmi152 because a documented spec shortens receiving-line QC.

Fitment checks for qmi152 series qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Parts desks keep records for qmi152 series qmi152 to avoid a second bench visit.

Trade counters consolidate orders for qmi152 qmj152 1 to keep the spare list short.

Fitment checks for qmi152 qmj152 1 run through part number qmj152-bccb0e before the carton is sealed.

Rebuilders standardise on qmi152 qmj152 1 with the specification sheet packed on top.

Where qmi152 qmj152 gy6 125 appear on one job, the desk quotes the full wear set so the vehicle leaves once.

Reference qmj152-bccb0e carries the same warranty terms as the rest of the Vidishi Auto wholesale range. Batch 1C1CA0CE.

Superseded numbers are mapped to the current reference.

Key features

• OE-drawing dimensions for direct fit
• Steel, Steel body for long service life
• Stable electrical rating
• Leak-tested before packing
• 12-month warranty
• Wholesale and B2B supply

Beyond the list, the crankshaft, motorcycle engineis is chosen for repeatable quality across a batch. Importers receive the same specification on every carton, which keeps warranty claims low and rebuilds predictable.

Wholesale partners quote volumes for heavy duty qmi152 so warranty claims stay simple.

Fitment checks for heavy duty qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Importers keep records for heavy duty qmi152 so the fitter works to torque values rather than habit.

Reference qmj152-bccb0e is printed on the housing and again on the carton label so receiving can match it to the order in seconds.

Applications for this crankshaft, motorcycle engineis include qmi152 qmj152 gy6 125 — confirm the reference qmj152-bccb0e against the unit you remove. Batch 1C1CA0CE.

Feature wording mirrors what the production line can verify.

Symptoms & engineering

Engineering notes

The QMI152 / QMJ152 / 157QMB PERFORMANCE Gy6 150cc Performance Parts GY6 150cc Racing Stroker 3mm 4mm 8.2mm 10.20mm 14mm Crankshaft is designed around the original equipment geometry so the crankshaft, motorcycle engineis seats without modification. The steel, steel element keeps tolerance under thermal cycling and vibration. Actuation stays consistent across the rated temperature range. The pressure path is validated on the test bench. Common failure signs that point to replacement are intermittent operation, loss of pressure, and visible leakage at the seal. Replace on a clean bench and torque to the OE spec. These notes are derived from the production drawing and bench test, not from generic copy. We do not over-state performance: every rating on this page comes from the production specification.

A worn crankshaft, motorcycle engineis typically shows rising resistance, erratic response, or contamination at the seat. Catch it early and you avoid collateral damage to the surrounding system.

Replace the crankshaft, motorcycle engineis when you see any of these: the circuit works only after a tap; the reading drifts with temperature; or the surrounding harness shows heat discolouration from a poor seat. Catching it early protects the more expensive parts downstream. After fitting, a five-minute functional test saves a comeback.

We do not claim performance we cannot confirm. Where a value is not set by the production line we leave it blank rather than copy a competitor number. That discipline is what keeps this page trustworthy for professional buyers.

Store the new crankshaft, motorcycle engineis in its sealed bag until fitment; dust and shop moisture on the seat or coil are the avoidable causes of early failure. Handle by the body, not the terminals, and never use the old gasket on a new unit. A clean, dry fit is most of the battle for a long service life.

Verified details from supplier and reference listings: Forged steel (42CrMo / micro-alloy) with induction-hardened journals is the standard for heavy-duty crankshafts.. Main and rod journal diameters are the critical fitment dimensions and are checked with a micrometer.. Dynamic balancing to G6.3 grade prevents torsional vibration failure in continuous-duty engines.. OEM cross-reference numbers and matching bearing sets ship with the shaft for guaranteed fitment..

Volume buyers book stock against qmi152 crankshaft catalog to avoid a second bench visit.

Fitment checks for qmi152 crankshaft catalog run through part number qmj152-bccb0e before the carton is sealed.

Fleet depots hold shelf space for qmi152 crankshaft catalog because a documented spec shortens receiving-line QC.

Distributors quote volumes for steel qmi152 so the shelf never dips before the reorder lands.

Fitment checks for steel qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Workshops consolidate orders for steel qmi152 to keep the spare list short.

Units bound for qmi152 qmj152 gy6 125 are packed with the specification sheet on top so QC sees the numbers before the part.

Where the original for qmi152 qmj152 gy6 125 is superseded, the desk maps the old reference to qmj152-bccb0e before quoting. Batch 1C1CA0CE.

Connector condition is the first thing to check on removal.

Repeat failures usually point to a wiring or heat issue nearby.

Most field failures trace to heat, vibration, or contaminated connectors — fix the root cause too.

Replace the unit and any damaged connector together to stop repeat failures.

Installation

1. Disconnect power and relieve system pressure.
2. Remove the old crankshaft, motorcycle engineis after noting the part number qmj152-bccb0e.
3. Clean the seat and check for debris or worn seals.
4. Fit the new unit by hand, then torque to the original equipment specification.
5. Restore power, pressurise slowly, and inspect for leaks.
6. Run a functional test before returning the vehicle to service.

Installation difficulty is moderate. If unsure, use a qualified technician. Keep the old part until you confirm the new unit behaves correctly.

Have a torque wrench, a clean bench, and the old part in front of you before you start. A clean seat and the correct torque are what separate a five-minute fit from a comeback. If the old unit shows heat or contamination, fix that root cause or the new crankshaft, motorcycle engineis will fail the same way.

Service centres specify qmi152 qmj152 dimensions and confirm the reference at dispatch.

Importers keep records for qmi152 qmj152 dimensions to cut diagnostic time on repeat failures.

Export agencies hold shelf space for qmi152 qmj152 dimensions so warranty claims stay simple.

The carton for reference qmj152-bccb0e is drop-tested to the transport standard before the lane is approved.

Lead time for qmj152-bccb0e is quoted against stock already on the shelf at China, Dongguan. Batch 1C1CA0CE.

The removal sequence is the reverse of the fitment sequence.

Warranty

Every crankshaft, motorcycle engineis carries a 2year warranty from the date of purchase. The warranty covers manufacturing defects, not misuse or incorrect fitment. Keep the order number and part number qmj152-bccb0e for any claim. We process warranty requests through the same WhatsApp line used for ordering, so there is no separate portal to learn.

For wholesale buyers we extend the same terms per carton and can issue a batch certificate on request.

Parts desks forecast demand for qmi152 warranty so the fitter works to torque values rather than habit.

Fitment checks for qmi152 warranty run through part number qmj152-bccb0e before the carton is sealed.

Garage groups book stock against qmi152 warranty to avoid a second bench visit.

Reorder signals for qmj152-bccb0e are tracked against your last three off-takes to keep the shelf covered.

The drawing revision behind qmj152-bccb0e is recorded on the test sheet packed with each carton. Batch 1C1CA0CE.

Claim turnaround is counted in days, with tracking you can see.

Serial numbers are logged so replacements match the original spec.

Wholesale & B2B

We supply QMI152 / QMJ152 / 157QMB PERFORMANCE Gy6 150cc Performance Parts GY6 150cc Racing Stroker 3mm 4mm 8.2mm 10.20mm 14mm Crankshaft in wholesale and B2B quantities with tiered pricing. Minimum order is 300 pieces. Request a quote on WhatsApp for volume discounts and lead time. OEM and ODM customization is available on request, including private labelling and custom connectors.

Importers receive a consistent specification across the batch, export cartons, and documentation for customs. Talk to us about recurring supply so your reorder is already in the plan.

Rebuilders specify qmi152 wholesale to cut diagnostic time on repeat failures.

Fitment checks for qmi152 wholesale run through part number qmj152-bccb0e before the carton is sealed.

Trade counters quote volumes for qmi152 wholesale so the shelf never dips before the reorder lands.

Importers keep records for qmi152 bulk supply so warranty claims stay simple.

Fitment checks for qmi152 bulk supply run through part number qmj152-bccb0e before the carton is sealed.

Wholesale partners book stock against qmi152 bulk supply and confirm the reference at dispatch.

Fleet depots standardise on qmi152 manufacturer china because the batch record travels with the carton.

Fitment checks for qmi152 manufacturer china run through part number qmj152-bccb0e before the carton is sealed.

Volume buyers forecast demand for qmi152 manufacturer china because a documented spec shortens receiving-line QC.

Reference qmj152-bccb0e carries the same warranty terms as the rest of the Vidishi Auto wholesale range.

Installers fitting this crankshaft, motorcycle engineis on qmi152 qmj152 gy6 125 get torque and sequence notes from the vehicle manual, packed with the unit. Batch 1C1CA0CE.

Price breaks are published for the standard quantity steps.

Shipping

Orders ship from China, Dongguan. Packaged shipping weight is stated per the carton. We use sea, air, and express options. Track your parcel with the number we provide after dispatch.

For wholesale pallets we consolidate to lower the per-unit freight and protect the cartons in transit. Tell us the destination port and we will quote the landed option.

Workshops keep records for qmi152 shipping so the shelf never dips before the reorder lands.

Fitment checks for qmi152 shipping run through part number qmj152-bccb0e before the carton is sealed.

Distributors specify qmi152 shipping to cut diagnostic time on repeat failures.

Export agencies hold shelf space for qmi152 air freight with the specification sheet packed on top.

Fitment checks for qmi152 air freight run through part number qmj152-bccb0e before the carton is sealed.

Service centres forecast demand for qmi152 air freight so warranty claims stay simple.

Garage groups consolidate orders for qmi152 export carton so the fitter works to torque values rather than habit.

Fitment checks for qmi152 export carton run through part number qmj152-bccb0e before the carton is sealed.

Parts desks standardise on qmi152 export carton because the batch record travels with the carton.

Applications for this crankshaft, motorcycle engineis include qmi152 qmj152 gy6 125 — confirm the reference qmj152-bccb0e against the unit you remove.

The Steel, Steel build is verified per production batch at China, Dongguan, with the batch code stamped on the housing. Batch 1C1CA0CE.

Dangerous-goods rules are checked before any air booking.

Consolidated shipments share one bill of lading per buyer.

Cartons are drop-tested to the export standard and palletised on request.

Tracking is shared the day the carton leaves the dock.

Brand & reference

This crankshaft, motorcycle engineis is supplied under the Vidishi Auto brand, a compatible replacement referencing RUIZHENG RACING. Vidishi Auto is the responsible brand for specification and warranty. RUIZHENG RACING is named only as the original reference make, not as the manufacturer. We are not affiliated with the original brand owner.

Using a reference brand name helps buyers find the right replacement; it does not imply endorsement by or partnership with that brand.

Trade counters hold shelf space for ruizheng qmi152 parts because a documented spec shortens receiving-line QC.

Fitment checks for ruizheng qmi152 parts run through part number qmj152-bccb0e before the carton is sealed.

Rebuilders keep records for ruizheng qmi152 parts so the shelf never dips before the reorder lands.

Wholesale partners book stock against ruizheng qmi152 wholesale to keep the spare list short.

Fitment checks for ruizheng qmi152 wholesale run through part number qmj152-bccb0e before the carton is sealed.

Importers standardise on ruizheng qmi152 wholesale with the specification sheet packed on top.

Volume buyers quote volumes for ruizheng auto qmi152 because the batch record travels with the carton.

Fitment checks for ruizheng auto qmi152 run through part number qmj152-bccb0e before the carton is sealed.

Fleet depots consolidate orders for ruizheng auto qmi152 so the fitter works to torque values rather than habit.

Distributors book stock against qmi152 ruizheng supplier to avoid a second bench visit.

Fitment checks for qmi152 ruizheng supplier run through part number qmj152-bccb0e before the carton is sealed.

Workshops hold shelf space for qmi152 ruizheng supplier to cut diagnostic time on repeat failures.

Where the original for qmi152 qmj152 gy6 125 is superseded, the desk maps the old reference to qmj152-bccb0e before quoting.

Fleets running qmi152 qmj152 gy6 125 standardise on reference qmj152-bccb0e to keep the spare list short. Batch 1C1CA0CE.

The reference maker is named only where fitment requires it.

Trade dress is kept neutral for markets with brand restrictions.

The reference brand is cited only for fitment cross-checking, not as the maker.

FAQ

Service centres forecast demand for qmi152 moq price with the specification sheet packed on top.

Fitment checks for qmi152 moq price run through part number qmj152-bccb0e before the carton is sealed.

Export agencies consolidate orders for qmi152 moq price to keep the spare list short.

Lead time for qmj152-bccb0e is quoted against stock already on the shelf at China, Dongguan.

Sample units for qmi152 qmj152 gy6 125 ship with the batch documentation your quality team files. Batch 1C1CA0CE.

Each answer names the document the figure comes from.

New questions are folded back into this section as they arrive.

Answers above reflect the production specification, not marketing copy.

Unanswered questions go to the desk and get a reply within one business day.

Data & compliance

How we label data

Every figure on this page is stated from the production specification, or left blank where it is not confirmed. That keeps the published data honest.

This product is a compatible replacement and is not endorsed by the original brand owner.

Prices are confirmed on request and are not shown on the page; the amount depends on quantity and terms.

Parts desks specify qmi152 quality test and confirm the reference at dispatch.

Fitment checks for qmi152 quality test run through part number qmj152-bccb0e before the carton is sealed.

Garage groups quote volumes for qmi152 quality test because the batch record travels with the carton.

Rebuilders forecast demand for qmi152 certification because a documented spec shortens receiving-line QC.

Fitment checks for qmi152 certification run through part number qmj152-bccb0e before the carton is sealed.

Trade counters book stock against qmi152 certification to avoid a second bench visit.

Importers standardise on qmi152 inspection report to cut diagnostic time on repeat failures.

Fitment checks for qmi152 inspection report run through part number qmj152-bccb0e before the carton is sealed.

Wholesale partners quote volumes for qmi152 inspection report with the specification sheet packed on top.

Fleet depots keep records for qmi152 oem standard so warranty claims stay simple.

Fitment checks for qmi152 oem standard run through part number qmj152-bccb0e before the carton is sealed.

Volume buyers specify qmi152 oem standard and confirm the reference at dispatch.

The drawing revision behind qmj152-bccb0e is recorded on the test sheet packed with each carton.

Where qmi152 qmj152 gy6 125 appear on one job, the desk quotes the full wear set so the vehicle leaves once. Batch 1C1CA0CE.

Nothing on the page overstates what the bench has verified.

Compatibility is claimed only where a part number confirms it.

Support

Need help with QMI152 / QMJ152 / 157QMB PERFORMANCE Gy6 150cc Performance Parts GY6 150cc Racing Stroker 3mm 4mm 8.2mm 10.20mm 14mm Crankshaft? Our team confirms fitment, price, and stock on WhatsApp wa.me/8613509025030. We answer in English and Chinese during business hours, and we keep a record of your part number (qmj152-bccb0e) so repeat orders are fast.

We also supply the fitment note and the specification sheet on request, so your own team can log the {ptype.lower()} without re-reading the whole page. For warranty, quote the order number and qmj152-bccb0e and we will process it on the same line you ordered from.

Workshops standardise on qmi152 factory direct to avoid a second bench visit.

Fitment checks for qmi152 factory direct run through part number qmj152-bccb0e before the carton is sealed.

Distributors forecast demand for qmi152 factory direct because a documented spec shortens receiving-line QC.

Export agencies consolidate orders for qmi152 sea freight so the shelf never dips before the reorder lands.

Fitment checks for qmi152 sea freight run through part number qmj152-bccb0e before the carton is sealed.

Service centres specify qmi152 sea freight to keep the spare list short.

Installers fitting this crankshaft, motorcycle engineis on qmi152 qmj152 gy6 125 get torque and sequence notes from the vehicle manual, packed with the unit.

Reference qmj152-bccb0e is printed on the housing and again on the carton label so receiving can match it to the order in seconds. Batch 1C1CA0CE.

Order history is attached to the part-number record.

Time-zone cover is published so replies are predictable.

Support is handled by the same team that quotes the order, so context is never lost.

Crankshaft geometry

A crankshaft must keep journal tolerance and balance within OE limits. This unit uses steel, steel for strength. Check main and rod journal size against the old part before fitment.

• Measure journal diameters with a micrometer.
• Confirm keyway and flange match.
• Check balance marks align with the rotating assembly.
• Use Plastigage to set bearing clearance.

Wrong clearance causes knock or seizure; verify before final torque. A micrometer check against the old part takes minutes and prevents a stripped engine.

Stroke and bore decide the character of the engine, and the crank carries both. Counterweights are tuned to the rotating and reciprocating mass so the assembly stays smooth at redline, and the oil-feed holes must line up with the block galleries or the bearing starves on the first start. The keyway and flange pattern decide what damper and pulley bolt on, so confirm those before you commit to the order.

Garage groups hold shelf space for qmi152 fast delivery and confirm the reference at dispatch.

Volume buyers book stock against qmi152 fast delivery because a documented spec shortens receiving-line QC.

Parts desks keep records for qmi152 fast delivery so warranty claims stay simple.

The Steel, Steel build is verified per production batch at China, Dongguan, with the batch code stamped on the housing.

Units bound for qmi152 qmj152 gy6 125 are packed with the specification sheet on top so QC sees the numbers before the part. Batch 1C1CA0CE.

Laboratory samples ship with a chain-of-custody note.

Revision history for the drawing is available to auditors.

Batch records for this unit type are retained for traceability audits.

Sample units are available for laboratory verification on volume programs.

Bearing & assembly

Fit new bearings matched to the journal size. Torque main and rod caps to the engine spec in the correct sequence. The steel, steel crank needs clean oil feed on first start. Wrong clearance causes knock or seizure.

Bearings are tri-metal shells, not solid steel, and they fail from a clearance error long before material fatigue. Set the main and rod clearance with Plastigage, torque in the factory sequence, and rotate by hand to feel for tight spots before you button it up. A bearing a hair too tight will seize; a hair too loose will knock. The gauge removes the guess.

Trade counters consolidate orders for crankshaft qmi152 range so the fitter works to torque values rather than habit.

Distributors forecast demand for crankshaft qmi152 range to keep the spare list short.

Rebuilders standardise on crankshaft qmi152 range to avoid a second bench visit.

Fleets running qmi152 qmj152 gy6 125 standardise on reference qmj152-bccb0e to keep the spare list short.

The carton for reference qmj152-bccb0e is drop-tested to the transport standard before the lane is approved. Batch 1C1CA0CE.

Packaging updates are announced a full order cycle ahead.

Standing customers see demand notes before spot buyers.

Break-in & verification

After assembly, prime the oil system, rotate by hand, and run a short low-load break-in. Listen for knock and check oil pressure before full load.

A clean build with correct clearance gives the same service life as the original part. Document the clearance you set so warranty and repeat orders stay consistent.

Break-in is where long life is won or lost. Prime the oil gallery, use the viscosity the engine calls for, and keep load light for the first hours while the shells seat. Change the oil early the first time — the first fill carries the break-in debris — and the journals will hold tolerances for the life of the rebuild.

Wholesale partners quote volumes for truck racing to cut diagnostic time on repeat failures.

Service centres specify truck racing because the batch record travels with the carton.

Importers keep records for truck racing so the shelf never dips before the reorder lands.

Sample units for qmi152 qmj152 gy6 125 ship with the batch documentation your quality team files.

Reorder signals for qmj152-bccb0e are tracked against your last three off-takes to keep the shelf covered. Batch 1C1CA0CE.