2 SPI Stock Bore Piston Kits for Yamaha 1973 GP338 1974 SL338 1976-77 GS340 60mm

2 SPI Stock Bore Piston Kits for Yamaha

These 2 SPI stock bore piston kits are replacement piston sets for Yamaha snowmobile engines, compatible with models GP338, SL338, and GS340.

Overview

These 2 SPI stock bore piston kits provide a direct replacement for worn pistons in Yamaha GP338, SL338, and GS340 engines. Each kit includes a high-quality piston and rings, ensuring proper compression and performance. Designed for riders restoring or maintaining vintage Yamaha snowmobiles, these 2 SPI stock bore piston kits offer a reliable rebuild solution.

Built For Performance

• Precision-machined to 60mm stock bore specification
• Includes premium piston rings for optimal sealing
• Manufactured by SPI for consistent quality
• Direct replacement for OEM pistons
• Tested for durability in snowmobile applications

Fits These Machines

• for Yamaha GP338 (1973)
• for Yamaha SL338 (1974)
• for Yamaha GS340 (1976-77)

On-The-Job Use

• Rebuilding vintage Yamaha snowmobile engines
• Restoring winter sports equipment for reliable operation
• Replacing worn pistons during engine overhaul
• Used in snowmobile racing applications for consistent power

Specs At A Glance

Good To Know

Q: Are these pistons compatible with other Yamaha models? A: These 2 SPI stock bore piston kits are specifically designed for Yamaha GP338, SL338, and GS340 models; always verify your engine code before ordering.

Q: Do these kits include wrist pins? A: Each kit includes the piston and rings; wrist pins and circlips may need to be reused or purchased separately.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.