Vortex 253ZK-35 520 CAT5 Aluminum Rear Sprocket 35T Black Anodized

The Vortex 253ZK-35 is a 520-pitch, 35-tooth CAT5 aluminum rear sprocket finished in a black anodized two-tone machined look. Designed for street and road racing applications, this sprocket delivers meaningful weight savings over OEM steel units, reducing rotating mass for improved throttle response and acceleration.

Key Features:

• 100% CNC manufactured in the USA to the tightest tolerances
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Black anodized finish applied before cutting for corrosion resistance and the signature two-tone machined appearance
• Unique patented tooth design increases sprocket longevity and optimizes chain engagement
• 520 chain pitch — compatible with 520-pitch chains and front sprockets
• 35 teeth — consult Vortex's gear ratio guide for gearing change impact vs. OEM

Vortex Racing sprockets are the choice of professional race teams worldwide. Note: Aluminum sprockets are more sensitive to chain cleanliness and tension than steel; chain should be cleaned and tensioned every 300–400 miles for maximum service life. Always replace chain and both sprockets as a set for best results.