Athena Replacement Piston for Yamaha YZ 85 105cc Big Bore - Part #S5F05300001B

Produced with cutting-edge CNC machining tools, which ensure dimensional tolerances of less than 0.01 mm, Athena pistons are made of a special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance. The perfectly smooth profile ensures a regular flow and the perfect flame propagation.

Athena engineers ensure advanced technical solutions and the highest quality standards equal to or better than those adopted in OE production, so as to guarantee performance and reliability.

Each piston, engineered in Italy by Athena R&D department, is tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate its performance even in the most extreme conditions.

Big Bore Piston Kit

Bore: 52.96mm

Displacement: 85cc

Compression: Standard

Piston: Forged Flat-Top

Kit Includes: 

• Forged Piston
• Piston Ring
• Wrist Pin
• Circlips

Application: Yamaha YZ 85

The Athena replacement piston for Yamaha YZ 85 105cc big bore models offers reliable performance and durability for your motorcycle. Crafted with precision, this piston is designed to enhance engine efficiency and power output, making it an ideal choice for riders seeking to upgrade or replace worn components. Its high-quality construction ensures consistent performance even under demanding conditions. The piston features a robust design that helps maintain optimal compression and engine responsiveness, contributing to improved acceleration and overall ride quality. Easy to install, this piston is compatible with Yamaha YZ 85 models with a 105cc big bore configuration, providing a seamless fit and long-lasting operation. Trust Athena to deliver superior aftermarket parts that meet or exceed OEM standards, ensuring your motorcycle remains in peak condition. Whether you're rebuilding your engine or upgrading for better performance, this piston is a reliable choice for enthusiasts and professionals alike.

Features:

• Designed for Yamaha YZ 85 105cc big bore models for optimal fit

• High-quality materials ensure durability and long-lasting performance

• Engineered to improve compression and power output

• Easy to install with precise dimensions for seamless compatibility

• Reliable aftermarket replacement part from Athena, meeting industry standards