Vortex 144BZK-38 CAT5 520 Aluminum Rear Sprocket 38-Tooth Black

The Vortex 144BZK-38 is a 520-pitch, 38-tooth CAT5 aluminum rear sprocket finished in Vortex's signature black anodized CAT5 style with contrasting silver machined highlights. Engineered for street and track riders who demand a lightweight, high-performance upgrade over heavy OEM steel sprockets, this sprocket reduces rotating mass for sharper throttle response and improved acceleration.

Key Features:

• CAT5 Finish: Black color anodizing applied to the body while sweeps, mud grooves, and teeth retain contrasting bright silver machine cuts for a race-ready appearance
• Lightweight Aerospace-Grade Aluminum: Specially formulated alloy per Vortex specifications — significantly lighter than OEM steel sprockets to reduce unsprung and rotating mass
• 520 Chain Pitch: Compatible with 520-pitch chain systems, suitable for OEM replacements or 520 conversions
• 38 Teeth: Direct tooth count for precise gear ratio tuning
• Saber Tooth Groove Design: Vortex patented tooth profile increases engagement and extends sprocket longevity
• 100% CNC Machined in the USA: Manufactured to tight tolerances for consistent quality and fitment
• Vortex Patented Sprocket Design: Engineered by and for motorcycle racers and enthusiasts

The Vortex CAT5 rear sprocket is a direct performance upgrade for riders looking to fine-tune their gear ratio or replace a worn OEM sprocket with a lighter, more durable alternative. Always verify bolt pattern and sprocket diameter compatibility with your specific motorcycle before installation.