



JT Sprockets Mud-resistant Steel Sprocket 251 - 520 (JTR251.49SC) — a transmission part designed for demanding terrains. This 49-tooth sprocket is made from C49 carbon steel, a material known for its mechanical properties and wear resistance. The mud-resistant profile facilitates dirt evacuation to minimize chain fouling during off-road outings.
Designed for cross usage, this sprocket fits 520 configurations and easily replaces the original component during a gear ratio change. Its mud-resistant design helps maintain transmission fluidity when the track is sticky with mud or sand. Simple mounting on a standard hub, it is suitable for riders looking for a robust and reliable part for their off-road adventures.
Common compatibilities: YAMAHA YZ 450 F (2026 - 450), FANTIC XX 125 (2022 - 125), GAS GAS EC 300 F (2015 - 300). Check interchangeability with your model before installation.