
The JT SPROCKETS crown reference JTR822.51 is a robust transmission part designed for replacement or modification of gearing on quads, motocross, and roadsters. Made from high-quality steel (C49 alloy), it combines strength and wear resistance for reliable mounting on a 520 final drive.
Designed to adapt to both off-road and on-road uses, this JT crown easily integrates during routine maintenance or gear changes. Its machining and heat treatment optimize the durability of the teeth against load and abrasion, making replacement easier and extending intervals between repairs.
Ideal for riders who tinker with their gearing or seek a reliable solution for the final drive. Examples of compatible motorcycles (representative models):