Renthal Front Sprocket 289 / 520 [Yamaha] size:14 Tooth Type of helmet: Modular helmet

Type of helmet: Modular helmet certified for both jet and integral uses

Outriggers

Pin pattern diameter: 39mm from pin to opposite pin

this high-spec race chain delivers exceptional tensile strength and minimal power loss

Tap the bearing into place with a hammer

Renthal Front Sprocket 289 / 520 [Yamaha] size:14 Tooth Type of helmet: Modular helmetRenthal sprockets are simply the finest sprockets on the market today. Their sprocket features a specially developed nickel chrome molybdenum steel which is case hardened and core refined to give the ultimate combination of strength and hardness. Grooved sprockets have cut outs at the bottom of the tooth to allow the escape of mud that would otherwise be trapped between the chainwheel and the chain. Allowing the easy escape of the mud prevents tension