Vortex 610BZK-37 CAT5 Aluminum Rear Sprocket 520 Pitch 37T Black

The Vortex 610BZK-37 is a CAT5 aluminum rear sprocket designed for performance street and track riders seeking reduced rotating mass and sharper throttle response. Featuring a 520 pitch and 37 teeth, this sprocket is finished in a striking black anodized coating and is 100% CNC machined in the U.S.A. to precise tolerances.

Key Features:

• 520 Pitch — Compatible with 520-series drive chains
• 37 Teeth — Direct-fit tooth count for optimized gearing
• CAT5 Aluminum Construction — Lightweight aerospace-grade aluminum alloy formulated to Vortex specifications
• Black Anodized Finish — Durable anodized coating with CNC-machined highlights for a premium appearance
• 100% CNC Machined — Manufactured to tight tolerances ensuring concentricity and smooth power delivery
• Reduced Rotating Mass — Lighter than OEM steel sprockets for improved acceleration and handling
• Optimized Tooth Profile — Engineered tooth design minimizes chain wear and extends drivetrain life

Vortex Racing has been a trusted name in motorcycle racing components for over 15 years, supplying top professional race teams worldwide. The 610BZK-37 rear sprocket is an ideal upgrade for riders looking to fine-tune their gearing ratio for improved acceleration while shedding unnecessary weight from the drivetrain.