SPI Hyperdryve High Performance Piston Kit

The SPI Hyperdryve High Performance Piston Kit is a replacement piston kit for powersports engines, including snowmobiles. It is built for riders who want a stronger, more heat-tolerant piston than a conventional cast design. Depending on the part number, the kit may be called a piston kit, piston and ring set, or top end piston replacement.

Key Features:

• Space-age aluminum alloy: keeps its high tensile strength at temperatures up to 700°F, which SPI says is 50% higher than a conventional cast piston.
• Better durability: the heat resistance improves fatigue strength and impact toughness, so the piston holds up under hard riding.
• Heat transfer: the design gives combustion chamber heat a good path to the cylinder walls.
• Crown and skirt treatments: anodized crowns, machine-smoothed heads and MoS2-coated skirts help with smoother start-ups and break-in.
• OEM-spec manufacturing: the pistons, rings, pins and circlips are made to OEM specifications. The individual components are interchangeable with original parts.
• Original weight: piston weight is compatible with the original piston, which helps keep the engine balanced.

Each kit is a complete piston, ring, wrist pin and circlip package for the engine it is designed for. Select the child item that matches your engine and bore. SPI Hyperdryve pistons are a dependable choice for rebuilds and for performance engines that run hot.