Vortex 628ZR-48 CAT5 Aluminum Rear Sprocket 48-Tooth

The Vortex 628ZR-48 is a 48-tooth CAT5 aluminum rear sprocket precision-engineered for performance street and track applications. Manufactured 100% in the USA, this sprocket is CNC-machined from a specially formulated aerospace-grade aluminum alloy developed to Vortex's own specifications, delivering an exceptional strength-to-weight ratio versus stock steel sprockets.

The ZR-series features Vortex's patented unique tooth geometry, which promotes smoother chain engagement and extended sprocket life. Lightening cutouts throughout the sprocket body reduce rotating mass, contributing to improved throttle response and reduced drivetrain inertia. The hard-anodized silver finish provides corrosion resistance and a clean, race-ready appearance.

Key Features:

• 48-tooth rear sprocket for adjusted final drive gearing
• CAT5 aluminum construction — specially formulated alloy per Vortex specifications
• 100% CNC manufactured in the USA to tight tolerances
• Patented Vortex tooth design for increased sprocket longevity
• Lightening holes/cutouts to reduce rotating mass
• Hard-anodized silver finish for corrosion resistance
• Designed as a direct bolt-on replacement — no modification required

Vortex Racing has been a trusted name in motorcycle racing components for over 15 years, supplying professional race teams across Motocross, Supercross, Road Racing, and Flat Track disciplines. The 628ZR-48 rear sprocket is an excellent upgrade or replacement for riders seeking to fine-tune their gear ratio for improved acceleration without sacrificing quality or durability.