Vortex 840C-37 Aluminum Rear Sprocket for BST Wheels Sprockets - 37-Tooth

The Vortex 840C-37 is a lightweight aluminum rear sprocket engineered for motorcycles equipped with BST (Black Stone Tek) carbon fiber wheels. Featuring a 37-tooth configuration, this sprocket is precision-crafted to deliver race-proven performance on both the track and street.

Key Features:

• BST Wheel Compatible: 5-bolt mounting pattern with a 100mm Pitch Circle Diameter (PCD) and 76mm sprocket ID — purpose-built for BST carbon fiber wheels
• Lightweight Aluminum Construction: Manufactured from a specially formulated alloy per Vortex specifications to reduce rotating mass and improve throttle response
• 100% CNC Machined in the USA: Precision manufacturing ensures consistent quality and exact tolerances
• Silver Anodized Finish: Corrosion-resistant anodizing protects the sprocket and extends service life
• Vortex Patented Tooth Design: Unique tooth geometry increases sprocket longevity and promotes smooth chain engagement
• 37-Tooth Rear Sprocket: Provides a balance of acceleration and top-end performance suitable for a wide range of applications

Vortex Racing has been manufacturing top-quality racing components in the USA since 1995. The 840C series rear sprockets are the preferred choice for riders running BST carbon fiber wheels who demand lightweight, precision components without compromising durability.