Vortex 435ZRV4-39 VTX Aluminum Rear Sprocket Pitch Sprockets - 520 39-Tooth

The Vortex 435ZRV4-39 is a 39-tooth, 520-pitch CNC-machined aluminum rear sprocket built for riders who demand lightweight performance without sacrificing durability. Part of Vortex's renowned 435 series, this sprocket is a direct upgrade over heavier OEM steel units.

Key Features:

• 520 Chain Pitch — compatible with 520-pitch drive chain setups
• 39-Tooth Rear Sprocket — tuned gearing for optimized power delivery
• 7075-T6 Billet Aluminum Construction — specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• 100% CNC Machined in the USA — manufactured to tight tolerances for precise fit and finish
• CAT5 Color Anodized Finish — electrically coated for a brighter shine and corrosion resistance
• Vortex Patented Saber Tooth Groove Design — unique tooth geometry increases sprocket longevity and reduces chain wear
• Reduced Rotating Mass — lighter than OEM steel sprockets for improved acceleration, deceleration, and directional response

The Vortex 435ZRV4-39 rear sprocket is an ideal replacement or performance upgrade for street, sport, and track applications. Vortex Racing has been a trusted name in American-made motorcycle racing components for over 15 years, with parts proven by professional race teams worldwide.