PISTON KIT 10-13 CRF250 76.80, PROX 01.1342.B
ProX Piston Kit 76.80mm STD Compression 13.2:1. Precision machined on CNC equipment using the same low-expansion, low-friction piston alloy used by major Japanese engine manufacturers. This kit is a first-class solution to replace the original piston. Many ProX pistons feature OEM-style tin coating to assist in the wear-in process and a new skirt coating that reduces friction after wear-in. This black coating is made from a delicate mix of materials and increases performance. Replacement parts include PROX RING SET 02.1340, PROX PISTON PIN 04.1641.4, and PROX CLIPS 05.1612.
- SKU
- 56-W950.B.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (4)
FULL DESCRIPTION
ProX Piston Kit - High Performance Replacement
This ProX Piston Kit is engineered for precision and performance, offering a top-tier solution to replace the original piston in your motorcycle, scooter, moped, ATV, or personal watercraft. Manufactured using state-of-the-art CNC equipment, these pistons utilize the same low-expansion, low-friction alloy favored by major Japanese engine manufacturers.
Key Features:
- Standard Compression: Features a 76.80mm bore with a 13.2:1 compression ratio for optimal power output.
- Advanced Coating: Many ProX pistons come with an OEM-style Tin coating that aids the break-in process. A new skirt coating is also applied to reduce friction after initial wear-in, enhancing overall performance.
- Increased Performance: The black skirt coating, crafted from a specialized material mix, is designed to boost engine performance.
- Durable Construction: Precision machined for a perfect fit and long-lasting durability.
Replacement Parts Available:
- ProX Ring Set
- ProX Piston Pin
- ProX Clips


