Replacement for Cylinder Kit Big Bore; Yamaha YZ 85 02-25; 52.

Description

Experience maximum strength, reduced friction, and race-proven reliability with an Athena Forged Piston Kit. Manufactured using advanced reverse extrusion and precision CNC machining, this forged high-silicon aluminum piston is built to withstand the demands of high-performance off-road riding. Engineered and tested in Italy, the kit delivers OE-level fitment with enhanced durability, smoother power delivery, and long-lasting performance for competitive and recreational riders alike.

- Forged high-silicon aluminum piston provides superior strength and durability
- Precision CNC-machined to tolerances under 0.01mm for exceptional fit and performance
- Molybdenum disulfide skirt coating reduces friction and minimizes engine wear
- Japanese-made piston ring features wear-resistant coating for improved sealing and longevity
- Designed, engineered, and dyno tested in Italy for race-proven reliability
- Compatible with Athena and OEM cylinders

Includes:

- Forged Piston
- Piston Ring (1)
- Wrist Pin
- Circlips

- Displacement: 85cc
- Compression: Standard
- Piston Size: 52.95mm
- Piston Type: Forged
- Piston Head: Flat
- Piston Pin: Standard
- Wrist Pin Dimensions: 14 x 10 x 41mm
- Compression Height: 26.00mm
- Forged Side Relief Skirt
- Intended for competitive or high-performance off-road applications where permitted by local regulations

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.