Vortex 839ZR-45 Aluminum Rear Sprocket 45 Tooth

The Vortex 839ZR-45 is a lightweight aluminum rear sprocket featuring 45 teeth, designed for racing and high-performance street motorcycles. Vortex Racing rear aluminum sprockets reduce rotating mass and help put more power to the pavement, making them a popular choice among racers and performance enthusiasts.

Key Features:

• 100% CNC manufactured in the USA from specially formulated alloy per Vortex specifications
• Unique tooth design with saber tooth grooves increases sprocket longevity with Vortex's patented design
• Available with contrasting silver machine cuts that create bright highlights
• Anodized finish prevents corrosion and maintains appearance over time
• Lightweight CAT5 aluminum construction reduces unsprung weight

The 45-tooth configuration is commonly used for modified gearing setups to improve acceleration and low-end torque compared to stock gearing. Based in the USA, Vortex has been manufacturing top quality racing components since 1995, owned and operated by motorcycle racers. Each sprocket is precision-machined to tight tolerances for reliable performance on the street or track.