Vortex 165ZB-31 Aluminum Rear Sprocket 420 Pitch 31 Tooth Blue

The Vortex 165ZB-31 is a high-performance aluminum rear sprocket designed for mini bikes and pit bikes. Featuring a 420 pitch chain configuration with 31 teeth, this sprocket is precision-engineered from 7075 T6 aluminum for optimal strength and reduced rotating mass.

Key Features:

• 420 pitch, 31 tooth configuration
• Constructed from premium 7075 T6 aluminum alloy
• Blue anodized finish for corrosion resistance and style
• Manufactured to precise specifications ensuring concentricity and durability
• Strategic lightening holes reduce rotating mass for improved acceleration
• Compatible with mini bikes including Honda Grom, Honda Monkey, XR50/CRF50, and Kawasaki Z125

Vortex Racing sprockets are made to the tightest tolerances with direct feedback from professional race teams worldwide. The blue anodized surface finish provides excellent corrosion protection while maintaining a clean, race-inspired appearance. This sprocket allows riders to fine-tune their bike's gearing for optimal performance on the street or track.