Vortex 628ZK-51 415 Chain Conversion Aluminum Rear Sprocket 51-Tooth Black

The Vortex 628ZK-51 is a 51-tooth, 415-pitch aluminum rear sprocket designed as a lightweight chain conversion option for compatible motorcycles. Part of Vortex Racing's trusted lineup of performance drivetrain components, this sprocket is built to precise specifications from a specially formulated aluminum alloy, delivering the concentricity, strength, and longevity that racers and street riders demand.

Key Features:

• 415 chain pitch — a narrower, lighter conversion from larger OEM chain sizes for reduced rotating mass
• CAT5 aluminum construction — specially formulated alloy per Vortex specifications for an optimal strength-to-weight ratio
• Black anodized finish — corrosion-resistant anodizing provides lasting protection and a clean appearance
• 51 teeth — taller rear gearing for tuned acceleration characteristics
• Vortex patented tooth profile — unique tooth geometry engineered to extend sprocket longevity and promote smooth chain engagement
• Lightening holes — strategically placed to minimize rotating mass without sacrificing structural integrity
• 100% CNC manufactured in the USA — machined to tight tolerances for precise fitment and quiet operation

Vortex Racing has been a benchmark brand in motorcycle performance components for decades, trusted by professional race teams across Motocross, Supercross, Road Racing, and Flat Track disciplines. The 628ZK-51 is an excellent choice for riders seeking to fine-tune their gearing ratio with a high-quality, race-proven rear sprocket.