Vortex 526AZBV4-42 Blue 42-Tooth 525-Pitch Aluminum Rear Sprocket

The Vortex 526AZBV4-42 is a CAT5 aluminum rear sprocket featuring a 525 pitch and 42-tooth count, finished in a striking blue anodized coating with contrasting silver machined highlights. Designed as a high-performance, lightweight alternative to heavy OEM steel sprockets, this sprocket is engineered for riders who demand precision, durability, and style.

Key Features:

• 525 Pitch — 42-tooth count for precise gearing tuning
• Lightweight 7075-T6 aluminum construction reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA to the tightest tolerances, ensuring a perfectly concentric sprocket every time
• Specially formulated alloy per Vortex specifications for the ideal balance of light weight and durability
• Blue anodized finish with silver machined accents — anodizing is applied before cutting to create the iconic two-tone look and protect against corrosion
• Vortex patented saber tooth groove design reduces drag and friction for better acceleration and deceleration while increasing sprocket longevity
• Mud grooves help keep drivetrain components clean
• Available in single-tooth increments for precise gearing customization

Reducing rotating weight at the rear wheel multiplies the performance benefit — less rotating mass means faster acceleration response and more usable power delivery. The Vortex CAT5 aluminum rear sprocket is the racer's choice for street and track applications where every ounce counts.