520 Motorcycle Front Sprocket For 900SS 906 Paso 916 Strada Biposto 851SP 797 Engine Parts Fit For 900 Super 92-98 SuperSport 89-92 906 Paso Sports 916 Strada Biposto 797 851 851SP motorcycles; drive shaft spline; fits standard 520 drive chain Direct bolt on mounting design; aligns shaft tooth position; no extra during chain drive assembly Smooth polished tooth surface; reduces chain friction loss; maintains stable power output in speed riding hardness structure; supports frequent speed rotation; slows surface abrasion over long mileage Standard inner spline tooth dimension; size matching; keeps tight connection with front drive shaft