SPI Piston Pin Needle Bearing

The SPI Piston Pin Needle Bearing (also called a wrist pin bearing or needle cage bearing) supports the piston pin where it connects the piston to the connecting rod. SPI, also known as Sports Parts Inc., makes these bearings for two-stroke snowmobile and powersports engines.

Key Features:

• Top-end needle cage bearing made to factory specifications
• Cage made from chromoly or standard steel
• Needle design reduces friction at the piston pin and supports smooth, reliable piston movement
• Works with SPI pistons, wrist pins and circlips as part of a top-end rebuild
• Sold as a replacement bearing in a range of sizes, each listed under its own part number

Replacing a worn piston pin bearing during a top-end rebuild helps restore proper pin fit and reduces the risk of premature wear. Choose the child item that matches your engine's bearing specification.