



The JT SPROCKETS crown reference JTR10.46 is a transmission part designed for replacements and gear ratio changes. Machined from C49 carbon steel, it features a standard tooth count of 46 teeth compatible with 525 pitch chains. Its black finish integrates seamlessly on roadsters and other motorcycles equipped with similar rolling chassis.
This crown is intended for pinion-crown-chain connections; it allows for adjusting the gear ratio to modify the engine's behaviour during acceleration or top speed. It is used as a replacement during transmission maintenance: check the pitch and the required number of teeth for your model, as well as the condition of the pinion and chain before installation. Example of common compatibilities (to be confirmed according to year and specifications): BMW F 900 GS ADVENTURE (2026), BMW F 900 GS (2026), BMW S 1000 XR (2025).