Custom Engineering Options
- Custom stroke and connecting rod configuration review
- Crank pin and counterweight requirements
- Surface treatment discussion
- Logo, private-label and packaging requirements
- Drawing- and sample-based development
Yamaha RX-King RX135 51.6mm Stroker Crankshaft
This Yamaha RX-King RX135 51.6 mm stroker crankshaft is a performance-upgrade reference for single-cylinder 2-stroke applications. The 51.6 mm final stroke is a +1.6 mm increase from the 50.0 mm OEM stroke, with a +0.8 mm pin offset and +60 g counterweight. Confirm the motorcycle model, engine code and original crankshaft reference before ordering.
- Application
- Yamaha RX-King / RX135
- Intended B2B use
- Racing and performance-upgrade B2B projects.
Confirmed Product Specifications
Values marked Project-confirmed require review against the final application, drawing or sample before production.
- Product
- Yamaha RX-King RX135 51.6mm Stroker CrankshaftConfirmed
- Application
- Yamaha RX-King / RX135Confirmed
- Engine type
- Single-cylinder, 2-strokeConfirmed
- OEM bore reference
- 58 mmConfirmed
- OEM stroke
- 50.0 mmConfirmed
- Final stroke
- 51.6 mmConfirmed
- Stroke increase
- +1.6 mmConfirmed
- Jack up / pin offset
- +0.8 mmConfirmed
- Counterweight
- +60 gConfirmed
- Application use
- Racing / performance upgradeConfirmed
- Custom stroke options
- 50 / 51.6 / 52 mm or OEM customConfirmed
Product Detail Images
Additional product and packaging views for specification review.
Buyer Confirmation Checklist
- Yamaha RX-King or RX135 model and engine code
- Original crankshaft reference
- Required stroke and bore configuration
- Crank pin and connecting rod requirements
- Drawing or sample when available
- Target quantity and packaging requirement
Manufacturing and Quality Control
Foshan Ruizheng Machinery Manufacturing Co., Ltd. reviews manufacturing and inspection requirements against the confirmed project specification.
Crankshaft quality-control informationYamaha RX-King RX135 51.6mm Stroker Crankshaft FAQ
Answers are limited to the information available for this product reference and project review process.
What Yamaha models is this 51.6 mm stroker crankshaft for?
This product reference is for Yamaha RX-King and RX135 applications. Please confirm the motorcycle model, engine code and original crankshaft reference before production.
What are the confirmed OEM and final stroke dimensions?
The OEM stroke reference is 50.0 mm. The final stroke is 51.6 mm, a +1.6 mm increase.
What pin offset and counterweight are specified?
The confirmed jack up or pin offset is +0.8 mm, and the counterweight is +60 g.
What bore reference is used for this product?
The OEM bore reference provided for this product is 58 mm.
Can a different RX-King or RX135 stroke be reviewed?
The listed custom stroke options are 50, 51.6 and 52 mm, or an OEM-custom configuration. Confirm the final application and specification before quotation.
What information is required for quotation?
Please provide the Yamaha model, engine code, original crankshaft reference, required stroke and bore configuration, crank pin and connecting rod requirements, plus a sample or drawing and target quantity when available.