PISTON KIT 08-11 YZF250 77.00, PROX 01.2409.C, 3-RING
3-ring piston kit with 77.00 mm bore and 13.5:1 standard compression ratio. This kit is ready to install and includes piston rings, wrist pin, and circlips. ProX pistons are precision machined using a low-expansion, low-friction piston alloy, the same used by major Japanese engine manufacturers. The piston features an OEM-style tin coating to aid in the break-in process. Replacement parts include ProX ring set 02.2402, ProX pin 04.1644.4, and ProX clips 05.1612C. This kit is compatible with Yamaha YZF250 YZ250F models from 2008-2009.
- SKU
- 56-W4952.C.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
FULL DESCRIPTION
ProX 3-Ring Piston Kit
This ProX Piston Kit is engineered for precision and performance, featuring a 77.00 mm bore size and a standard compression ratio of 13.5:1. Designed for easy installation, each kit includes the piston, piston rings, wrist pin, and circlips, providing a complete solution for your engine rebuild.
Key Features:
- Precision machined using advanced CNC equipment.
- Constructed from a high-quality, low-expansion, low-friction piston alloy, mirroring that used by major Japanese engine manufacturers.
- Includes an OEM-style tin coating to aid in the crucial break-in process.
- Ready for immediate installation.
This ProX piston kit ensures reliable performance and durability, offering replacement parts that meet stringent quality standards.


