Vortex 151-31 Silver 31-Tooth 420 Aluminum Rear Sprocket

The Vortex 151-31 is a silver anodized, 31-tooth aluminum rear sprocket designed for motorcycle and powersports applications running a 420-pitch chain. Built to racing standards, this sprocket is engineered for riders who demand lightweight performance without sacrificing durability.

Key Features:

• 31 teeth with 420 chain pitch compatibility
• Lightweight standard aluminum construction for reduced unsprung weight
• 100% CNC machined in the USA for precise tolerances
• Specially formulated alloy developed to Vortex's own specifications
• Silver anodized finish to resist corrosion and maintain appearance
• Vortex patented unique tooth profile engineered to extend sprocket longevity

Vortex Racing is a trusted name in American-made sprocket technology, and the 151 series delivers proven performance for mini bikes, small-displacement motorcycles, and youth racing applications. The patented tooth geometry distributes chain load more evenly, reducing wear on both the sprocket and chain for longer service life.