SPI SM-09261 T-Moly Snowmobile Piston Kit with Rings Pin & Circlip 600

The SPI SM-09261 is a T-Moly (T-Series) piston kit designed for 600cc snowmobile engines. Each kit includes everything needed for a complete piston replacement: one piston, one ring set, one wrist pin, and one circlip set — all manufactured to OEM specifications for a direct-fit, drop-in installation.

The T-Series piston features a molybdenum (T-Moly) coating on the skirt, which significantly reduces friction during initial break-in and throughout the life of the engine. This specialized coating also improves heat transfer from the combustion chamber to the cylinder walls, helping to maintain safe operating temperatures and extend engine life.

Key Features:

• Complete kit — includes 1 piston, 1 ring set, 1 wrist pin, and 1 circlip set
• T-Moly skirt coating — reduces friction and wear for longer service life
• OEM-spec manufacturing — all pistons, rings, pins, and circlips meet original equipment tolerances
• Direct interchangeability — all individual components are fully interchangeable with original parts
• Weight-matched — piston weight is compatible with the original piston to maintain proper engine balance
• Optimized heat transfer — engineered to efficiently move combustion chamber heat to cylinder walls

SPI (Sport Parts Inc.) is a trusted supplier of powersports replacement components. The SM-09261 T-Moly piston kit is an ideal choice for engine rebuilds on compatible 600cc snowmobile applications, delivering reliable performance and long-lasting durability.