ATHENA REPL. PISTON YZ 85 105CC. BIG BORE

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