Vortex 151ZR-37 CAT5 420 Pitch 37-Tooth Aluminum Rear Sprocket Red

The Vortex 151ZR-37 is a CAT5 series 420-pitch, 37-tooth aluminum rear sprocket finished in a striking red anodize with contrasting silver machine-cut highlights. Designed and manufactured in the USA, this sprocket is a direct upgrade over heavy OEM steel units, delivering real weight savings and improved throttle response.

Key Features:

• 420 Pitch — compatible with 420-chain applications
• 37 Teeth — allows for fine-tuned final drive gearing adjustments
• CAT5 Lightweight Aluminum Construction — CNC-machined from a specially formulated aerospace-grade alloy per Vortex specifications
• Red Anodized Finish — color anodizing applied to the body while sweeps, mud grooves, and teeth retain a bright silver contrast
• Patented Saber Tooth Groove Design — Vortex's unique tooth geometry increases sprocket longevity and is unlike any other sprocket on the market
• 100% CNC Manufactured in the U.S.A. — precision machined for consistent quality and exact tolerances
• Reduced Rotating Mass — lighter than OEM steel sprockets, contributing to improved acceleration and handling

The Vortex CAT5 rear sprocket is the go-to choice for riders looking to upgrade their drivetrain with a race-proven, street-ready component. The red anodized finish resists corrosion while keeping the look sharp ride after ride.