Vortex 436ZK-37 CAT5 Rear Aluminum Sprocket Black 37T 530 Pitch

The Vortex 436ZK-37 is a lightweight CAT5 rear aluminum sprocket featuring a black anodized finish with contrasting silver machined highlights. Designed for riders who demand precision-engineered drivetrain components, this 37-tooth, 530-pitch sprocket delivers a noticeable reduction in rotating mass for improved throttle response and power delivery.

Key Features:

• 37 Teeth — 530 chain pitch
• Lightweight CAT5 aluminum construction — reduces rotating mass and improves acceleration feel
• 100% CNC manufactured in the USA — precision tolerances for consistent fitment and performance
• Specially formulated alloy per Vortex specifications — optimized for strength-to-weight ratio
• Saber tooth groove design — Vortex patented tooth profile extends sprocket longevity
• Black anodized finish — anodized first, then CNC machined for a bold black look with bright silver highlights on sweeps and tooth faces
• Vortex patented sprocket design — unlike any other sprocket on the market

The CAT5 series utilizes a color anodizing process that excludes the sweeps, mud grooves, and teeth, resulting in striking silver contrasts against the black body. Made from 7075 aluminum and built to Vortex's exacting standards, the 436ZK-37 is a proven choice for both track and street performance applications.