Motorcycle Front Sprocket For Kawasaki KLX300 EL250 EX250 Ninja GPZ250R KLE250 1986-2025 Fit For Kawasaki KLX300R KLX300 2020-2025 EL250 1988-2003 EX250 Ninja 1986-2007 GPZ250R 1986-2005 KLE250 1993-2001 motorcycles compatible with 520 drive chain system CNC machined tooth profile meshes smoothly with standard 520 chain to avoid chain skipping lower drivetrain noise carbon construction with surface hardening offers outstanding wear resistance for daily street offroad riding Accurate spline size mounting dimension match engine output shaft for direct installation without extra Uniform tooth hardness reduces chain abrasion extends the life of the entire drive train assembly