Vortex 628ZK-45 CAT5 415 Aluminum Rear Sprocket 45T Black

The Vortex 628ZK-45 is a 45-tooth, 415-pitch CAT5 aluminum rear sprocket finished in black anodize. Engineered for track and racing applications, this sprocket is part of Vortex's renowned CAT5 lineup — trusted by racers who demand tight tolerances, reduced rotating mass, and consistent performance lap after lap.

Key Features:

• Lightweight CAT5 aluminum construction — reduces rotating mass for improved throttle response and acceleration
• 415 chain pitch — designed for 415 chain conversion setups used in track and mini-moto racing applications
• 45 teeth — optimized for performance gearing adjustments
• 100% CNC manufactured in the USA to the tightest tolerances
• Specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• Saber tooth groove design — Vortex patented tooth profile increases sprocket longevity and chain engagement
• Black anodized finish with contrasting silver machined highlights for corrosion resistance and appearance
• Lightening holes further reduce overall sprocket weight

Note: 415 conversion sprockets are intended for track use only and are not designed for street riding.