AFAM AF12323SLK+51 51T Super Lite Self-Cleaning Steel Rear Sprocket Black (520 Pitch) for Yamaha YZ125/YZ250/YZ250F/YZ250FX/YZ250X/YZ450F/YZ450FX/WR250F/WR400F/WR426F/WR450F Models

Maximum weight saving (SL Super Light) thanks to its fourth generation T4 design in black color by Black electrophoresis (K Black) and equipped with mud grooves make this sprocket ideal for MX and sand races.

AFAM Steel rear sprockets are the most durable on the market. All CNC machined and produced in C45 normalized steel with induction hardened teeth, which reduces wear on sprocket and chain drastically and ensures a longer life span. The normalized steel prevents the sprocket from micro cracks in the material. Executed in silver (zinc plated) or black (electrophoresis) for a long-lasting protection against corrosion. This assures the quality of the product to offer you a safe ride.