Wiseco 2284M06900 Pro-Lite Forged Piston Kit Yamaha 440 Exciter 1975-1981

The Wiseco 2284M06900 Pro-Lite Piston Kit is a high-performance forged piston assembly designed for the Yamaha 440 Exciter snowmobile (1975–1981). Built to deliver superior durability and power output over stock components, this kit is a trusted choice for riders demanding reliable performance in demanding conditions.

Wiseco forges each piston from a high-silicon aluminum alloy, resulting in exceptional strength, thermal stability, and resistance to wear. The precision forging process produces a denser grain structure than cast pistons, making these units capable of withstanding the high-stress environment of performance two-stroke engines.

Key Features:

• Forged high-silicon aluminum alloy construction for maximum strength and long service life
• Innovative forging design and piston skirt geometry engineered to maximize horsepower and torque
• Complete kit includes piston, rings, wrist pin, and circlips — everything needed for installation
• Manufactured to tight tolerances for optimal ring seal and reduced blow-by
• Oversize bore applications may require cylinder re-sleeving or boring
• OEM cross-reference: Yamaha 440 Exciter (1975–1981), Wiseco catalog number 2717CS

Wiseco Pro-Lite kits are a complete drop-in solution for engine rebuilds, delivering the quality and consistency that professional engine builders and serious enthusiasts rely on. Whether restoring a classic sled or building a high-output powerplant, the 2284M06900 kit provides the foundation for a dependable rebuild.