Description
Features
- Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication
- Lightweight piston with a tight piston wall clearance for a quieter running engine
- Skirt coated for reduced friction and improved break in performance
- Ring land treatment for improved ring seal and oil control
- Double bridged forging design where noted
- Kit includes piston, rings, wrist pin and pin locks
Specs
| Bore – Oversize | +0.01 mm |
| Stroke Length | 53.60 mm |
| Bore – Oversize | +0,01 mm |
| Piston Material | Forged |
| Piston Size | 76.97 mm |
| Product Name | Piston Kit |
| Bore Size | 77.01 mm |
| Engine Type | 4-Stroke |
| Piston Material | Aluminum Alloy |
| Model | Premium Series |
| Style | Standard Size B |
| Units | Kit |
| Compression Ratio | 14.0:1 |
| Riding Style | Off-Road |
Part Notes
- Double bridge forging.
- 3D crown.
- Two ring design.
- Kit Includes:
- • Piston #8957DB
- • Ring Set #RIK77.00D
- • Wrist Pin #WP070-SP
- • Retaining Clips #CW16
| 2019-2024 | Yamaha | YZ 250 F |
| 2020-2023 | Yamaha | WR 250 F |
| 2020-2024 | Yamaha | YZ 250 FX |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer’s information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Reviews
There are no reviews yet.