Vortex 840ZBV4-43 Aluminum Rear Sprocket 43T Black/Silver for BST Wheels

The Vortex 840ZBV4-43 is a lightweight, high-performance aluminum rear sprocket engineered for motorcycles equipped with BST (Black Stone Twin-Tek) carbon fiber wheels. With a 43-tooth count and a black/silver anodized finish, this sprocket delivers the precision and durability demanded by serious road racers and performance riders.

Key Features:

• 100% CNC manufactured in the USA from 7075 T6 billet aluminum for unrivaled precision and consistency
• Black hardcoat PTFE (polytetrafluoroethylene) finish with silver machined accents — bonds to the aluminum surface for increased durability and reduced friction
• Specially formulated alloy per Vortex specifications for superior strength-to-weight ratio
• Unique saber tooth groove design increases sprocket longevity and clears debris from between teeth
• 43-tooth rear sprocket for optimized gearing and drivetrain performance
• BST wheel compatible — 5-hole bolt pattern with 100mm PCD (Pitch Circle Diameter) and 76mm sprocket ID
• Reduces rotating mass for improved acceleration, deceleration, and directional changes

Vortex has been manufacturing top-quality racing components in the USA since 1995, with products trusted and tested by professional race teams worldwide. The 840ZBV4-43 is a direct bolt-on upgrade that combines race-proven engineering with the lightweight advantage of aluminum construction.