Hot Rods 79-87 Honda CR 125 R 125cc Wrist Pin Bearing

If you're rebuilding the top end of your 1979-1987 Honda CR 125 R, a new wrist pin bearing is a small part that makes a big difference. This bearing sits between the piston pin and the connecting rod, allowing the piston to pivot smoothly as it moves up and down. Without a well-functioning bearing, you'll experience increased wear and potential engine damage.

This wrist pin bearing is constructed from hot-rolled ASTM 4115 steel, a strong material chosen for its ability to handle the stresses within an engine. It's then case-hardened to a hardness level of 58-62 Rc, which means the outer surface is made very hard to resist wear and friction, while the inner core remains tough. This process helps ensure it can withstand the constant motion and heat generated during operation, contributing to the longevity of your engine's internal components.