JT Sprockets Rear OE Steel T42 #520 JTR897.42 size-48 The composition of the protector

The composition of the protector is made up of multiple layers

The cheek pads and top liner are moisture wicking and the neckroll is water resistant to prevent water from getting inside the helmet

These durable guards provide a cushioned barrier between your tyre levers and the rim surface

Open-ended design allows for easy installation of bar ends or mirrors

which is often the first part to hit the ground

JT Sprockets Rear OE Steel T42 #520 JTR897.42 size-48 The composition of the protectorThis OE grade steel rear sprocket provides the perfect balance of weight, strength, and longevity for 520 chain conversions or standard replacements. It is designed to withstand harsh riding conditions while maintaining smooth chain engagement. Induction hardened teeth significantly reduce friction and prevent premature chain stretching. Optimised for 520 pitch chains with a versatile 42 tooth count. The steel composition is specifically chosen for