Slider Fit For Honda CRF250R CRF250X CRF450R CRF450X MOJO M2 M4 M8 Prevents Chain Rubbing Protects Swingarm Specialized swing arm chain slider compatible Fit For Honda CRF250R CRF250X CRF450R CRF450X motocross For bikes MOJO M2 M4 M8 enduro pit bikes wear-resistant TPU plastic material buffers chain friction, avoids swing arm scratch abrasion during high-speed off-road jumps Curved groove design restrains chain lateral shake, reduces chain slap noise prevents chain derailment on bumpy trails molded mounting holes match swing arm bracket, direct bolt-on installation without or Dust mud structure blocks grit infiltration, extends life of chain, sprocket swing arm assembly