Vortex 840ZB-39 Rear Aluminum Racing Sprocket 39T Black Anodized Aftermarket Wheel

The Vortex 840ZB-39 is a lightweight aluminum racing sprocket that's 100% CNC manufactured in the USA from specially formulated alloy. This 39-tooth rear sprocket features a silver anodized finish to prevent corrosion with stylish black accents, combining durability with race-ready aesthetics.

Key Features:

• Unique tooth design increases sprocket longevity
• Lightweight construction reduces rotating mass and aids in putting more power to the pavement
• Vortex patented sprocket design is unlike any other sprocket
• Machined of aerospace grade alloys and engineered to achieve maximum lightness and strength
• Features a 5 bolt aftermarket bolt pattern, compatible with wheels by OZ, Marchesini, BST, CoreMoto (Apex-6 only), Rotobox and other manufacturers

Sprocket Specifications:

• Teeth: 39T
• 5 bolt holes (10mm) with a PCD (Pitch Circle Diameter) of 100mm and a sprocket ID of 76mm
• Finish: Black anodized with silver accents

Based in the USA, Vortex has been manufacturing top quality racing components since 1995. These sprockets will not fit most OEM wheels—they are designed specifically for aftermarket racing wheels.