Number of parts: 9

NOTE: 90/90-21 and 90/100-21 use different tread patterns

FIM and ECER75 certified for use in European competition and public space events

Weight: from 500g (1

but with a more aggressive tread for extreme conditions

Supersprox - Sprocket 14 Front Yamaha SI (CST-1592-14-1) past type tag-Tires - Scooter Number of parts: 9Drive Sprocket Front Drive Sprocket Supersprox front sprockets are the best on the market today, with a balance between performance and longevity. Features SCM435 Ni Chrome Molybdenum low corrosion steel. Case hardened surface for maximum water resistance. Low carbon core to prevent breakage. Has the ultimate combination of strength and hardness. Rear Drive Sprocket (many style available) Stealth Sprocket (aluminum & steel) Longer system life without