Vortex 635ZK-45 Black 45-Tooth 630-Pitch Rear Sprocket

The Vortex 635ZK-45 is a 45-tooth, 630-pitch aluminum rear sprocket finished in a black anodized CAT5 style. Engineered for performance riders who demand precision and durability, this sprocket is built to Vortex's exacting standards using a specially formulated aluminum alloy.

Key Features:

• 630-Pitch chain compatibility — designed for use with standard 630-series drive chains
• 45 teeth — optimized tooth count for gearing adjustments favoring acceleration
• Black anodized finish — anodizing protects against corrosion and provides a clean, aggressive look
• Lightweight aluminum construction — reduces rotating mass to improve throttle response and overall performance
• 100% CNC manufactured in the USA — machined to the tightest tolerances for consistent fitment and performance
• Vortex patented tooth design — unique profile increases sprocket longevity and chain engagement
• Specially formulated alloy — proprietary material spec per Vortex standards for strength-to-weight optimization

Vortex has been manufacturing top-quality racing components since 1995. Owned and operated by motorcycle racers, every sprocket is track-tested with feedback from professional race teams worldwide, ensuring this sprocket delivers race-proven reliability for street and track applications.