Precision components / Crank Pin
Ruizheng Racing RX-K / KR150 Offset Crank Pin
Yamaha RX-K and Kawasaki KR150 — application-specific pin configurations
- Eccentric Offset
- 0.5 / 0.8 / 1 / 1.2 / 2 / 3 mm — configuration subject to confirmation
- Crank Pin Diameter
- 22 mm
- Crank Pin Length
- RX-K: 54.5 mm
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
- Crank Pin Diameter
- 22 mm reference
- Crank Pin Length
- RX-K: 54.5 mm; KR150: 54 mm
- Reference Big End Bore
- RX-K: 28 mm; KR150: 29 mm
- Reference Connecting Rod Length
- RX-K: 100 mm; KR150: 104 mm
- Reference Big End Width
- RX-K: 16 mm; KR150: 17 mm
- Eccentric Offset
- 0.5 / 0.8 / 1 / 1.2 / 2 / 3 mm — configuration subject to confirmation
- Theoretical Stroke Increase
- Respectively +1 / +1.6 / +2 / +2.4 / +4 / +6 mm
Application & supply
- Brand
- Ruizheng Racing
- Engine Type
- 2-Stroke Motorcycle Engine
- Customization
- Available; drawing or sample review
- MOQ
- 300 pcs
Specification source & technical context
Application-specific crank pin and offset stroker pin references for Yamaha RX-K and Kawasaki KR150 projects. The supplier specifies a 22 mm reference diameter, with 54.5 mm RX-K and 54 mm KR150 lengths. Select the engine configuration before ordering. Offset figures are eccentric distances, not final engine stroke; the theoretical stroke increase is twice the offset. MOQ 300 pcs; custom requirements can be reviewed against a drawing or sample.
Supplier-provided applications
Applications & fitment
Yamaha RX-K and Kawasaki KR150 — application-specific pin configurations
- Yamaha RX-K54.5 mm reference pin length
- Kawasaki KR15054 mm reference pin length
- Kawasaki Ninja 150 R / RR / KRR / ZX150related applications subject to verification
Please confirm your engine version and installation dimensions before ordering. RX-K and KR150 have different reference rod interfaces; no universal pin interchangeability is claimed.
OEM / Customization
Your project requirements.
Customization is available on request. Provide the application, drawing or sample, required dimensions, quantity and destination country. Final technical specifications and supplied components must be approved before production.
Related products
Related components, not a claim of interchangeability.
Before you order
Frequently asked questions
Are the RX-K and KR150 pins interchangeable?
No universal interchangeability is claimed. RX-K references are 22 × 54.5 mm with 28 mm rod big-end bore; KR150 references are 22 × 54 mm with 29 mm rod big-end bore. Confirm the exact drawing and bearing arrangement.
What does the offset dimension mean?
It is eccentric distance. Theoretical stroke increase is 2 × offset: 0.5, 0.8, 1, 1.2, 2 and 3 mm correspond to +1, +1.6, +2, +2.4, +4 and +6 mm. These are not measured installed results.
What final stroke will my engine have?
Confirm your original engine stroke and selected pin geometry. The supplied total-stroke example has an unidentified base application and is not a final-stroke guarantee.
Is the pictured needle bearing included?
The photograph shows a pin and bearing reference. Bearing availability, size, quantity and inclusion must be confirmed in the quotation.
What is the minimum order quantity?
MOQ is 300 pcs. Confirm the order unit and final supply configuration, including any pin, bearing or accessories, in the quotation.
Can I request a custom configuration?
Yes. Send your engine model and year, drawing or sample, required dimensions, quantity and destination country. Custom specifications and supply configuration are subject to technical review. Material, hardness, tolerances, certification, branding and packaging require explicit agreement; they are not assumed.
Start your specification review
Request a Quote
Send your engine reference, required specification and quantity. MOQ: 300 pcs.
Request a Quote