Vortex 253AZB-37 CAT5 525 Aluminum Rear Sprocket 37-Tooth Black

The Vortex 253AZB-37 is a CAT5 series rear sprocket machined from high-grade 7075 T6 aluminum with a 525 chain pitch and 37-tooth count in an anodized black finish with contrasting silver machine cuts. Designed for riders who demand race-proven performance and reduced rotating mass over stock steel sprockets.

Key Features:

• Lightweight CAT5 aluminum construction — dramatically reduces rotating mass compared to OEM steel sprockets for improved acceleration and handling
• 100% CNC manufactured in the USA — machined to tight tolerances for precise, concentric fit
• 7075 T6 aerospace-grade aluminum — specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• Patented saber tooth groove design — unique tooth profile increases sprocket longevity and promotes efficient chain engagement
• Anodized black finish with contrasting silver machine cuts for a premium appearance
• 525 chain pitch — 37-tooth rear sprocket configuration

Vortex CAT5 sprockets are the choice of professional racing teams and performance street riders alike. The combination of precision CNC machining and high-grade aluminum ensures a sprocket that delivers race-quality performance with a service life that rivals many steel alternatives.