Vortex 840ZB-51 Rear Sprocket 51-Tooth 530-Pitch Silver Aluminum

The Vortex 840ZB-51 is a lightweight standard aluminum racing sprocket that is 100% CNC manufactured in the USA and designed specifically for aftermarket wheels, particularly BST wheels. This 51-tooth rear sprocket features a 530-pitch chain configuration and is constructed from 7075 T6 billet aluminum for exceptional strength-to-weight ratio.

Key Features:

• Specially formulated alloy per Vortex specifications
• 100% CNC machined with saber tooth grooves
• Unique tooth design increases sprocket longevity
• Silver anodized to prevent corrosion
• Sprocket dimensions: 5 (10mm holes) with a PCD (Pitch Circle Diameter) of 100mm and a sprocket ID of 76mm
• Vortex patent pending design

Based in the USA, Vortex has been manufacturing top quality racing components since 1995. Owned and operated by motorcycle racers, they focus on absolute quality. Each of their race components are made to the tightest tolerances with the best quality materials for the application. This sprocket is ideal for high-performance street and racing applications where durability and precision matter most.