JT. Steel Self-Cleaning 251 - 520 SprocketRef : JTC00203A / 1075483003

Manufacturer Ref: JTR251.50SC — JT Sprockets mud-resistant steel sprocket 251 - 520 designed for motocross. Ideal for standard replacement or for modifying the gearing, this sprocket meets the demands of 520 transmissions for off-road use. Its mud-resistant profile helps limit the accumulation of mud between the chain and the sprocket for more consistent performance in muddy conditions.

• Material: C49 carbon steel
• Color: black
• Number of teeth: 50
• Chain pitch: 520
• Type: standard — direct mount on hub

Designed for off-road sessions, this JT sprocket is aimed at motocross and enduro riders looking for a robust and easy-to-install component. Compatible model examples: YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), GAS GAS EC 300 F (2015). When replacing, check the wear of the sprocket and the condition of the chain, and adhere to the manufacturer's torque specifications for safe transmission.