Fit For Swingarm Rubber Chain Slider For 50cc-150cc Dirt Pit Bikes Motorcycle Spare Parts Custom molded contour common swingarm mounting structures across full range of 50cc through 150cc pit bike models with no frame alteration required Thick elastic rubber composition absorbs continuous chain to eliminate scratch gouge marks on swingarm during jumps bumpy trail rides Abrasion oil material premature cracking hardening deformation under long term vibration offroad operation Embedded bumps hold slider firmly in place to shifting displacement during suspension compression rapid acceleration hard braking Smooth inner sliding surface reduces chain friction noise without obstructing routine chain lubrication tension adjustment rear work