JT. Steel Self-Cleaning 251 - 520 SprocketRef : JTC01335A / 1075483004

JT SPROCKETS Mud-Resistant Steel Sprocket 251 - 520 (ref. JTR251.51SC) — Specifically designed for motocross, this JT Sprockets rear sprocket combines C49 alloy steel and a mud-resistant profile to limit dirt accumulation between the wheel and the drivetrain. Designed for a 520 pitch and standard 251, it fits the classic sprocket/sprocket setups of off-road machines.

Robust and straightforward, the sprocket features a standard tooth count of 51 teeth to adjust the gearing according to your need for traction or top speed. The anti-clogging treatment facilitates mud ejection during heavy track passages, ensuring more consistent chain performance in off-road conditions.

• Material: C49 alloy steel
• Number of teeth: 51
• Chain pitch: 520
• Type: Standard, sprocket reference 251
• Usage: Motocross / off-road

Common compatibility (examples):

• YAMAHA YZ 450 F (2026 - 450 cc)
• FANTIC XX 125 (2022 - 125 cc)
• GAS GAS EC 300 F (2015 - 300 cc)

A reliable drivetrain part to replace your worn sprocket or modify the gearing, it integrates with 520 pitch transmissions and maintains the standard 251 geometry for a simple and secure installation.