JT Sprockets Steel Front Countershaft Sprocket - 12T / 520 Pitch (Part Number: JTF284.12)

Deliver massive low-end punch and bulletproof reliability to your machine's final drive with the JT Sprockets Front Countershaft Drive Sprocket. As the world’s leading manufacturer of aftermarket sprockets, JT Sprockets constructs this 12-tooth drive sprocket using structural-grade SCM420 chromoly steel alloy to guarantee exceptional core toughness and absolute resistance against high-torque impact fatigue. [1, 2, 3, 4]

Every sprocket is engineered through advanced CNC machining and computer-designed tooth architecture to achieve exact fitment tolerances and entirely true rotation. Fully induction heat-treated and hand-finished, this sprocket features a hardened surface structure that reduces rolling friction and prevents early tooth hook wear, outlasting standard mild steel components by two to three times. Dropping down to a 12-tooth front size is the ultimate way to maximize low-speed acceleration, corner pull, and climbing power on tight tracks or rugged trails. [1, 2, 3, 4, 5]

This 520-pitch front sprocket uses a precise spline configuration engineered specifically for high-power off-road motorcycles and ATVs. It serves as a direct fit or conversion upgrade for: [1, 2]