Hot Rods 79-93 Kawasaki KX 125 125cc Wrist Pin Bearing

This is a Hot Rods wrist pin bearing for your 1979-1993 Kawasaki KX 125. It's a small but important part that sits between the connecting rod and the piston pin, allowing them to rotate smoothly against each other. Keeping this bearing in good shape is key to a healthy engine, as it handles a lot of the stress from combustion and piston movement.

Hot Rods builds this bearing from hot-rolled ASTM 4115 steel, which is a strong material chosen for its durability. It's then case-hardened to a hardness of 58-62 on the Rockwell C scale. This hardening process makes the surface of the bearing very tough, helping it resist wear and last longer under the demanding conditions inside your engine. A well-hardened bearing helps prevent premature wear on both the wrist pin and the piston itself.