Vortex 642AZBV4-40 VTX Aluminum Rear Sprocket 40-Tooth

The Vortex 642AZBV4-40 is a 40-tooth aluminum rear sprocket engineered for performance street and track riders who demand precision, durability, and reduced rotating mass. Manufactured in the USA by Vortex Racing — a brand trusted by professional race teams worldwide — this sprocket is built to the tightest tolerances in the industry.

Key Features:

• 7075 T6 billet aluminum construction — lightweight and strong, reduces rotating mass for improved throttle response
• 100% CNC machined with Vortex's signature saber tooth grooves for enhanced chain engagement and longevity
• Vortex patented tooth design — uniquely engineered to increase sprocket life compared to conventional designs
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• Anodized finish helps resist corrosion and maintain appearance
• Lightening holes further reduce rotating mass and aid power transfer to the wheel
• 40-tooth rear sprocket — compatible with applicable Vortex 642-series carrier applications
• Manufactured in the USA by Vortex Racing

Vortex Racing has been producing top-quality motorcycle racing components since 1995. Each sprocket is tested on the track with feedback from professional race teams, ensuring every part meets the demands of both competitive racing and spirited street riding. The 642AZBV4-40 is a direct-fit replacement or performance upgrade rear sprocket for supported applications.