PROX Piston Kit for Yamaha YZ426F 2000-2002 and WR426F 2001-2002 - 12.5:1 Compression Ratio

CONNECTING ROD KITS
One of our core product line, where we became famous with. Our ProX Connecting Rod Kits are made out of the toughest alloys available today and are made in Japan! O.E.M specifications and tolerances are meticulously maintained, a guarantee for easy installation and trouble free performance. Find our connecting rod dimension overview here.
ProX Rod Kit Features
Manufactured by leading Japanese OEM factories.
Designed to exact OEM specifications to be a direct and cost efficient OEM replacement.
Complete line for Dirtbike, ATV, PWC and 50cc/scooter available from stock.
Double forged on dedicated forgings
This process maintains superior strength, durability and dimensional consistency through improved grain flow.
Shot peening & barrelling
The design of a connecting rod is very important to guarantee the lifespan and the performance. Our connecting rods are barrelled and shot peened to improve the surface texture. Shot peening eliminates residual stress and smoothly blends the forging surfaces.
Oiling system
Our ProX oiling slots are precisely located to maximize lower rod oiling and extend bearing life. Even under the most extreme conditions the rod will do its job. ProX Connecting Rod Kits come complete with Crankpin, Big-End Bearing, Small End Bearing and Washers.

The PROX Piston Kit (Part Number: 01.2427.C) is designed to deliver reliable performance for Yamaha YZ426F models from 2000 to 2002 and WR426F models from 2001 to 2002. Built with precision and quality, this kit ensures optimal engine function and longevity. The piston features a high compression ratio of 12.5:1, providing increased power output and improved throttle response for competitive riding or recreational use. The kit includes all necessary components for a complete overhaul, streamlining installation and reducing downtime. Crafted from durable materials, the PROX piston withstands high temperatures and stresses, maintaining performance over extended periods of use. Whether you're rebuilding your motorcycle for a race or restoring it for everyday riding, this piston kit offers a perfect balance of performance and reliability, ensuring your engine runs smoothly and efficiently for miles to come.

Features:

• High compression ratio of 12.5:1 for increased power and performance

• Designed specifically for Yamaha YZ426F (2000-2002) and WR426F (2001-2002) models

• Complete piston kit includes all necessary components for installation

• Durable construction to withstand high temperatures and stresses

• Precision-engineered for optimal engine performance and longevity