Rear Sprocket 45 Teeth for KTM and Husqvarna 125/390/401 - 90510051045

This 45-tooth rear sprocket is a genuine OEM component designed to ensure optimal power transfer and drivetrain efficiency for your motorcycle. Engineered to meet strict factory specifications, this sprocket provides the durability and precise fitment required for consistent performance on the road or track.

This part is compatible with a wide range of models, including the 2014-2021 KTM 125 Duke, 390 Duke, and RC 390, as well as the 2018-2021 Husqvarna Svartpilen 125, 401, and Vitpilen 401. It is a direct replacement for the original equipment on these specific displacement platforms.

Regular inspection of your sprocket teeth is essential for maintaining chain longevity and smooth gear transitions. When replacing the rear sprocket, it is recommended to inspect the front sprocket and drive chain for signs of wear to ensure the entire drivetrain remains in peak condition.

Check compatibility list below to see if this part fits your motorcycle model.