Vortex 255BZK-45 Rear Sprocket 45-Tooth Black Aluminum

The Vortex 255BZK-45 is a lightweight aluminum racing rear sprocket featuring 45 teeth with a black anodized finish. Part of Vortex's CAT5 series, this sprocket is designed for riders seeking reduced rotating mass and improved power delivery to the pavement.

Key Features:

• 45-tooth rear sprocket for 520-pitch chain
• 100% CNC manufactured in the USA from specially formulated aluminum alloy
• Black anodized finish with machined accents on teeth, sweeps, and mud grooves
• Patented tooth design increases sprocket longevity and performance
• Lightweight construction reduces rotating mass for better acceleration
• Precision-machined to the tightest tolerances for race-quality performance

Vortex Racing sprockets are the choice of professional race teams worldwide, tested on the track to deliver championship-level performance. Each sprocket is manufactured to exacting specifications using advanced CNC machining processes, ensuring perfect fitment and maximum durability. The unique tooth profile design helps extend the life of both the sprocket and chain while maintaining consistent power transfer.