At DMG Motorsports, we present the Vortex Aluminum Rear Sprocket 43T-520 in Silver (654A-43) — a race-proven drivetrain upgrade built for Yamaha riders who demand strength without excess weight. Vortex has been a trusted name in sprocket manufacturing since the mid-1990s, and this 43-tooth, 520-pitch rear sprocket carries on that legacy as a favorite among racers and street riders alike. Shedding rotational mass at the rear wheel improves acceleration, handling, and overall throttle response, and this sprocket delivers that advantage while maintaining the durability riders expect from a component that sees real track and street use.

Features:

• CNC machined from 7075 aircraft-grade aluminum for an excellent strength-to-weight ratio
• 43-tooth, 520-pitch design engineered for Yamaha applications
• Unique tooth design that improves concentricity for a stronger, quieter, and longer-lasting sprocket
• Silver anodized finish for a clean, factory-style appearance
• Reduces unsprung rotational mass to help sharpen acceleration and handling
• Regarded as an industry standard, trusted by champions in professional racing
• Precision manufactured to Vortex's exacting specifications for consistent fitment and performance