Vortex 338-45 45-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 338-45 is a 45-tooth, 520-pitch aluminum rear sprocket designed for motorcycle road and racing applications. Manufactured by Vortex Racing — a U.S.-based leader in powersports drivetrain components — this sprocket delivers the precision, durability, and weight savings demanded by performance-oriented riders.

Key Features:

• 45-Tooth, 520-Pitch Design: Engineered for 520-pitch chain systems, providing smooth, precise power transfer from the engine to the rear wheel
• Lightweight Aluminum Construction: CNC-machined from high-grade aluminum alloy per Vortex specifications, significantly reducing unsprung and rotating mass
• Silver / Natural Anodized Finish: Anodized surface coating resists corrosion and wear while maintaining a clean, classic appearance
• Patented Tooth Profile: Vortex's unique saber-tooth groove design extends sprocket service life and promotes consistent chain engagement
• 100% CNC Manufactured in the U.S.A.: Tight machining tolerances ensure precise fit and long-lasting performance rivaling steel sprockets
• Direct Replacement Fitment: Designed as a bolt-on replacement for compatible motorcycle applications using the 338-series mounting pattern

The Vortex 338-45 rear sprocket is a trusted choice for road racers, track day enthusiasts, and street riders looking to fine-tune their gearing ratio. Stepping up to a 45-tooth rear sprocket increases low-end acceleration and improves throttle response compared to smaller stock sprockets. Vortex Racing's decades of experience supplying professional racing teams ensures every sprocket meets the highest standards of quality and consistency.