Precision components / Motorcycle Crankshaft
Yamaha DT125R / TZR125 Crankshaft Assembly
Yamaha DT125R / TZR125 — confirm engine version and installation dimensions
- Stroke
- 50.7 mm
- Crank Throw
- 25.35 mm
- Piston Pin Diameter
- 16 mm
View applications & fitment. Custom stroke available; specify your required dimensions.
At a glance
Key specifications
Supplier-provided references. Final custom configurations must be agreed. See the complete technical specifications below.
Engineering data
Technical specifications
Dimensions & geometry
- Stroke
- 50.7 mm
- Crank Throw
- 25.35 mm
- Connecting Rod Center-to-Center Length
- 105 mm
- Piston Pin Diameter
- 16 mm
- Small End Needle Bearing
- 16 × 21 × 19.6 mm
- Ignition Side Shaft Diameter
- 25 mm
- Transmission Side Shaft Diameter
- 25 mm
- Left Shaft Journal Length
- 63 mm
- Right Shaft Journal Length
- 59.5 mm
Application & supply
- Brand
- Ruizheng Racing
- Product Type
- Motorcycle Crankshaft Assembly
- Engine Type
- 2-Stroke, Single Cylinder
- Engine Displacement
- 125 cc application reference
- Crankshaft Design
- Full-Cheek Type
- Crank Web Width
- 57.8 mm
- Right Bearing / Seal Seat Width
- 25.35 mm
- MOQ
- 300 pcs
Specification source & technical context
Crankshaft assembly for Yamaha DT125R / TZR125 sourcing projects, with supplier-stated 50.7 mm stroke, 105 mm connecting rod center-to-center length and 16 mm piston-pin diameter. MOQ 300 pcs. Custom-stroke requests can be reviewed against an approved drawing; confirm engine version and assembly interfaces before ordering.
Detailed product images
Supplier promotional illustration, not installation or performance-test evidence.
Supplier-provided applications
Applications & fitment
Yamaha DT125R / TZR125 — confirm engine version and installation dimensions
- Yamaha DT125R
- Yamaha TZR125
Please confirm your engine version and installation dimensions before ordering. Model year, starting system, shaft taper and bearing interfaces require drawing review. No universal fitment across all versions or related models is claimed.
OEM / Customization
Your project requirements.
Custom stroke is available subject to technical review. Provide the required stroke, drawing or sample, engine version, quantity and destination country. No unapproved stroke range, material, tolerance or certification is promised.
Related products
Related components, not a claim of interchangeability.
Before you order
Frequently asked questions
What are the principal dimensions?
The supplier specifies 50.7 mm crankshaft stroke, 25.35 mm crank throw, 105 mm connecting rod center-to-center length and 16 mm piston-pin diameter. Confirm the approved drawing before production.
Does this fit every DT125R or TZR125?
No all-years or universal-fit claim is made. Provide the model year, engine reference and starting system; shaft length, taper, bearing interfaces and installation dimensions must be checked.
Can I request a custom stroke?
Yes. Provide the required stroke and an engine drawing or sample. Feasibility, clearances and final dimensions require technical approval; no specific custom range is guaranteed.
Is the needle bearing included?
The supplier sheet lists a 16 × 21 × 19.6 mm small-end needle-bearing reference and the photos show a separate bearing. Inclusion, quantity and final bearing specification must be confirmed in the quotation.
What is the minimum order quantity?
MOQ is 300 pcs. Confirm the order unit and final assembly configuration, including bearings and accessories, in the quotation.
What information is needed for a quotation?
Send your model, year, engine version, required dimensions or drawing, quantity, destination country and customization needs. Material, hardness, tolerances, packaging and certification requirements require explicit agreement.
Start your specification review
Request a Quote
Tell us your required stroke, engine version and assembly requirements. MOQ: 300 pcs.
Request a QuoteThe RFQ requirements field includes a custom-stroke entry prompt. No unconfirmed stroke options are offered.