Vortex 522ZR-37 Red Aluminum Rear Sprocket 522 Pitch 37-Tooth

The Vortex 522ZR-37 is a 37-tooth, 522-pitch red anodized aluminum rear sprocket engineered for performance motorcycle applications. Designed and manufactured by Vortex Racing, this sprocket is built to deliver superior performance on both the street and track while reducing unsprung and rotating mass compared to OEM steel sprockets.

Key Features:

• 522 Pitch: Designed for 522-series chain (5/8" x 1/4" pitch) — confirm chain pitch compatibility before installation
• 37 Teeth: Precise tooth count for accurate gearing tuning
• Red Anodized Finish: Aggressive, race-inspired red anodize for corrosion resistance and visual appeal
• Lightweight Aluminum Construction: Reduces rotating mass to improve throttle response and acceleration
• 100% CNC Manufactured in the USA: Machined to precise tolerances from specially formulated aluminum alloy per Vortex specifications
• Patented Tooth Design: Vortex's unique tooth geometry increases sprocket longevity and chain engagement
• Bolt-On Fitment: Direct replacement for compatible applications — no modifications required

Vortex Racing sprockets are a trusted choice among racers and performance riders worldwide. Changing rear sprocket tooth count affects final drive gearing: a higher tooth count increases low-end acceleration, while a lower count raises top-end speed. The 522ZR-37 is an excellent option for riders looking to fine-tune their bike's power delivery characteristics.