Vortex 635ZK-48 CAT5 Black Aluminum Rear Sprocket 525 Pitch 48-Tooth

The Vortex 635ZK-48 is a CAT5 aluminum rear sprocket featuring a 525 chain pitch and 48 teeth with a black hard-coat anodized finish. Designed as a high-performance upgrade over heavy OEM steel sprockets, this sprocket is 100% CNC manufactured in the USA to the tightest tolerances, ensuring perfect concentricity for smooth, efficient power transfer.

Key Features:

• 48-Tooth / 525 Pitch — Compatible with 525-pitch chain setups
• Black Hard-Coat Anodized Finish — Color anodizing applied to the body, excluding sweeps, mud grooves, and teeth for a distinctive two-tone look and added corrosion resistance
• Lightweight CAT5 Aluminum Construction — Specially formulated alloy per Vortex specifications; significantly lighter than stock steel sprockets to reduce rotating mass and improve acceleration
• 100% CNC Manufactured in the USA — Machined to the tightest tolerances for a perfectly concentric sprocket every time
• Unique Patented Tooth Design — Reduces friction and drag for improved acceleration and deceleration, while extending sprocket and chain life
• Mud Grooves — Integrated mud grooves help keep the drive system clean under demanding conditions
• Vortex Patented Sprocket Design — Unlike any other sprocket on the market

The Vortex 635ZK-48 is an ideal choice for riders looking to fine-tune their gear ratio for improved low-end pull or top-end speed while shedding unnecessary rotating weight from the drivetrain.