Vortex 527ZK-53 Cat5 Rear Aluminum Sprocket Black 53t

The Vortex 527ZK-53 Cat5 Rear Sprocket is a high-performance 53-tooth rear sprocket machined from lightweight aluminum and finished in a sleek black anodized coating. Designed for riders who demand precision engineering and reduced unsprung weight, this sprocket is part of Vortex's popular Cat5 series — built to exacting tolerances for consistent power delivery and long service life.

Vortex sprockets are manufactured in the USA and are a trusted choice among road racers, track day enthusiasts, and performance street riders. The anodized black finish provides corrosion resistance and a clean, race-inspired look that complements modern sportbikes.

Key Features:

• 53-Tooth Rear Sprocket — aggressive gearing for increased acceleration
• Lightweight Aluminum Construction — reduces unsprung rotational mass compared to steel sprockets
• Black Anodized Finish — corrosion-resistant and visually striking
• Cat5 Series — precision CNC-machined to strict tolerances
• 527 Chain Pitch Compatible — designed for use with 520-pitch chain applications (verify fitment for your specific chain size)
• Made in the USA — Vortex's commitment to domestic quality manufacturing

Upgrading to a larger rear sprocket like the 53T increases low-end torque and acceleration at the cost of slightly reduced top speed — a popular setup for tight, technical tracks or aggressive street riding. Pair with a compatible Vortex front sprocket and chain for a complete drivetrain upgrade.