Vortex 193AZL-37 CAT5 Aluminum Rear Sprocket 525 Pitch 37-Tooth Anodized Green

The Vortex 193AZL-37 is a CAT5 series aluminum rear sprocket designed for BMW S1000-platform motorcycles. Machined from a specially formulated aerospace-grade aluminum alloy to Vortex's exacting specifications, this sprocket delivers a significant weight reduction over OEM steel units, reducing rotating mass for improved throttle response and acceleration.

The CAT5 finish features a vivid anodized green color applied before CNC machining, which reveals bright silver highlights on the tooth faces and machined accents — giving the sprocket a striking two-tone appearance. The anodizing also provides a durable protective layer against corrosion and wear.

Key Features:

• 37-tooth rear sprocket — allows precise final drive ratio tuning
• 525 chain pitch compatibility
• Lightweight CAT5 aerospace-grade aluminum construction reduces rotating mass vs. OEM steel
• 100% CNC manufactured in the U.S.A. to tight tolerances for concentricity
• Saber tooth groove design — Vortex patented tooth profile increases sprocket longevity
• CAT5 anodized green finish with contrasting silver CNC-machined highlights
• Specially formulated alloy per Vortex specifications

Vortex Racing is a U.S.-based manufacturer with over 15 years of experience producing high-performance motorcycle drivetrain components. Their sprockets are race-proven by professional teams worldwide and manufactured to the tightest tolerances in the industry.