Top End Piston Kit; Yamaha 250 YZ 99-23

Description

Breathe new life into your 2-stroke engine with Athena's Forged Top End Piston Kit. Engineered for riders who demand maximum performance and reliability, this complete rebuild kit combines a precision-forged piston with Athena's premium top-end gasket kit for a seamless installation and race-proven durability. Manufactured from a high-performance aluminum alloy and CNC machined for exceptional accuracy, the forged piston delivers increased strength, superior heat resistance, and consistent power, while Athena's advanced gasket technology provides a dependable seal under the toughest riding conditions.

- Complete top-end rebuild kit featuring a forged 2-stroke piston and premium gasket set
- Precision-forged aluminum piston for superior strength and long-lasting durability
- CNC-machined for OEM-quality fit and consistent performance
- Optimized piston profile promotes efficient combustion and smooth power delivery
- Premium piston rings provide excellent cylinder sealing while reducing friction
- High-quality gasket materials ensure dependable, leak-free sealing

Includes:

- Forged 2-Stroke Piston
- Piston Rings (2)
- Piston Pin / Wrist Pin
- Circlips
- Needle Bearing
- Complete Top End Gasket Kit

- Piston Size: 66.35mm
- Displacement: 250cc
- Compression: Standard
- Piston Head: Domed
- Piston Type: Forged
- Piston Pin: Biconical
- Big End Pin Diameter: 18 x 13 x 53mm

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.