Vortex 312ZR-37 Aluminum Rear Sprocket 37-Tooth 520 Pitch

The Vortex 312ZR-37 is a 37-tooth aluminum rear sprocket designed for 520-pitch chain applications. Built to Vortex's exacting racing standards, this sprocket delivers a winning combination of lightweight performance and durability for street and track riders looking to fine-tune their motorcycle's gearing.

Key Features:

• 37-tooth rear sprocket for precise final drive ratio tuning
• Lightweight aluminum construction — specially formulated alloy per Vortex specifications
• 520 chain pitch compatibility
• Vortex patented tooth design increases sprocket longevity and reduces chain wear
• Anodized finish for corrosion resistance and lasting appearance
• Precision-machined to tight tolerances for concentric fit and quiet operation

Vortex sprockets are a trusted choice among performance motorcycle enthusiasts and racers. Changing to a 37-tooth rear sprocket allows riders to dial in acceleration and top-speed characteristics to match their riding style or track conditions.