At DMG Motorsports, we present the Vortex 251AS-42 Rear Sprocket — a 42-tooth, 520-pitch steel replacement sprocket engineered specifically for select Honda sportbike models. Built by Vortex Racing, a U.S.-based manufacturer trusted by professional race teams around the world, this sprocket is machined from high tensile carbon steel and finished in a durable satin black coating that resists corrosion while giving your drivetrain a clean, blacked-out look. Every sprocket is individually CNC machined in the U.S.A. to tight tolerances, ensuring smooth, quiet operation and reliable power transfer mile after mile. Whether you're restoring factory gearing or refreshing your chain and sprocket set, this Vortex 251AS-42 is a direct, race-proven upgrade built to handle the demands of both street and track riding.

Features:

• High tensile carbon steel construction for strength and long-term durability
• Precision CNC machined individually for the tightest tolerances
• Ideal Tooth Design™ delivers perfect chain hold and clean release for smoother power delivery
• Maximum wear resistance to extend sprocket and chain life
• Satin black electro-plated finish helps resist corrosion and adds a stealthy aesthetic
• 100% CNC manufactured in the U.S.A. by Vortex Racing
• 42-tooth, 520-pitch design engineered for select Honda sportbike applications
• Manufactured by an industry leader with over 15 years of race-proven experience in Motocross, Supercross, and Road Racing components

Fitment