Disney coloring pages printables MTX 460 Zero Aluminium Rear Sprocket #520 Gold. CNC machined from aviation grade 7075 T6 alloy the MTX Zero Alloy rear sprockets are your go to option for the lightest possible sprocket solution. Constructed with self cleaning mud grooves to increase the life of both your chain and sprocket. Computer designed weight reduction holes make the MTX Zero 66% lighter than the steel equivalent (model dependent) while maintaining maximum strength and durability. The anodised finish provides a factory look while preventing additional wear to the sprocket. Made using aviation grade 7075 T6 aluminium alloy Computer designed weight reduction holes 66% lighter than steel equivalent (model dependent) Less rotational mass improves acceleration and deceleration Self cleaning grooves increase chain and sprocket life CNC machined Anodised finish Presentable clamshell for an excellent presentation Pitch: 520 Teeth: 47 Colour: Gold