Namura Wrist Pin Bearing Caged Needle for Polaris Snowmobiles 20x25x21.8

Wrist Pin Bearing Caged Needle for Polaris

This caged needle wrist pin bearing supports the small end of the connecting rod to reduce friction in two-stroke engines. The component facilitates smooth rotation of the wrist pin under high engine load.

Overview

The wrist pin bearing caged needle is an essential internal engine part for maintaining clearance between the rod and piston pin. This wrist pin bearing caged needle is built to high tolerances to ensure long engine life in powersports applications. Properly installed, this wrist pin bearing caged needle ensures efficient power transfer from the piston to the crankshaft.

Built For Performance

• High-speed steel needle rollers for reduced friction
• Heat-treated cage for structural stability
• Precise dimensional accuracy for smooth motion
• Engineered to resist needle migration

Specs At A Glance

Good To Know

Q: Is this bearing suitable for high-RPM operation? A: Yes, this bearing is designed to maintain integrity during the high-speed oscillation of two-stroke engine cycles.

Q: Do I need to lubricate the needle rollers before installation? A: Always coat the bearings in clean two-stroke oil or assembly lube before final assembly to prevent dry start friction.

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