Vortex 151ZK-48 CAT5 520 Aluminum Rear Sprocket 48-Tooth Black

The Vortex 151ZK-48 is a CAT5 aluminum rear sprocket featuring a 520 pitch and 48 teeth in a black anodized finish. Designed as a high-performance upgrade over stock steel sprockets, this sprocket delivers reduced rotating mass for improved throttle response and acceleration.

Key Features:

• Lightweight aerospace-grade aluminum construction — significantly lighter than OEM steel sprockets, reducing unsprung and rotating weight
• 100% CNC machined in the U.S.A. to extremely tight tolerances for concentricity and precision fit
• Specially formulated alloy per Vortex specifications for superior strength and durability
• Patented saber tooth groove design — unique tooth profile increases sprocket longevity and maximizes power transfer
• Black anodized finish with contrasting silver machine cuts on sweeps, mud grooves, and teeth for a premium appearance
• 520 pitch — compatible with OEM 520 chain applications or suitable 520 conversions
• 48-tooth rear sprocket for modified gearing setups

The Vortex CAT5 series is engineered for sport motorcycle riders who demand race-proven performance and reliability. The black anodized finish resists corrosion and wear, while the precision CNC manufacturing ensures smooth, quiet chain engagement. Vortex sprockets are a trusted choice for street and track use alike.