Wiseco Yamaha YZ 400 77-78/IT 40077-78 3366TD Piston Kit

• Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio
• Improved tensile strength of forged material optimizes strength and service life
• Designed and built for each specific 2-stroke powersports engine
• Includes high-quality piston ring(s), wrist pin(s), and circlips
• Engineered, forged, and machined in the USA in Mentor, OH

The Wiseco Yamaha YZ 400 77-78 / IT 400 piston kit is designed for enthusiasts and professionals looking to restore or enhance their vintage Yamaha two-stroke engines. Crafted from high-quality forged material, these pistons provide superior tensile strength and durability compared to traditional cast pistons, ensuring reliable performance on the track or trail. The kit includes piston rings, wrist pins, and circlips, offering a comprehensive solution for your rebuild needs. Engineered and machined in the USA, each component is tailored specifically for Yamaha models from 1977 and 1978, including the YZ 400 and IT 400, ensuring perfect fit and optimal function. The 85.50 mm bore size makes these pistons ideal for restoring power and efficiency in your vintage powersports vehicle, providing a significant upgrade over worn-out components.

Features:

• Dedicated forgings and additional lightening operations optimize the strength-to-weight ratio for improved performance.

• Forged material offers enhanced tensile strength, extending service life and increasing reliability.

• Designed specifically for each 2-stroke Yamaha engine model from 1977 and 1978 for precise fit and function.

• Includes high-quality piston rings, wrist pins, and circlips for a complete rebuild kit.

• Manufactured in the USA in Mentor, Ohio, ensuring quality control and craftsmanship.