520 Motorcycle Rear Sprocket For Monster 800SS 851 Strada 750SS 900SS 620 Multistrada 400 Wide vehicle compatibility Fit For Monster 600 750 800 900 620 696; Fit For Super Sport 750SS 800SS 900SS 851 907; Fit For Multistrada 400, Fit For standard 520 pitch for rear transmission assembly CNC machined mounting hole layout consistent with OEM hub dimension; direct bolt on replacement without drilling or during drive chain system Made of tensile 45 carbon with integral treatment; anti deformation anti abrasion withstands long distance highway touring cross country vibration load Optimized smooth tooth profile reduces chain friction noise uneven stretch; extends life of matching 520 drive chain for street sport lightweight adventure riding optional tooth counts available to adjust gear ratio; enhances low end torque for city riding or boosts speed for highway cruising to meet diverse riding demands