Fuller Hotrods Wrist Pin Bearings High RPM Performance

Fuller Hotrods Wrist Pin Bearings are high-RPM performance wrist pin (piston pin) bearings. They are also called small end bearings or top end bearings. They sit between the piston pin and the connecting rod small end, and they carry the load of the piston as it changes direction thousands of times a minute. This line suits powersports engines such as motorcycles, dirt bikes, ATVs and watercraft.

Key Features:

• Built for high RPM: long shouldered bearing cages are designed to hold up under sustained high-revving use.
• Case hardened bearing cages: they resist wear and keep their shape under repeated loading.
• Cage profile options: flat (KU style) and long shouldered (KZ style) cages are used because they suit high-RPM applications.
• OEM replacement design: made to match original equipment fit and performance, so it works for rebuilds and routine top end service.

Replacing a worn wrist pin bearing during a top end rebuild helps protect the piston, pin and connecting rod from premature wear. Choose the correct variant for your engine.