Vortex 427ZRV4-45 VTX Aluminum Rear Sprocket Pitch Sprockets - 530 45-Tooth CAT5

The Vortex 427ZRV4-45 is a 45-tooth, 530-pitch CAT5 aluminum rear sprocket from Vortex Racing's VTX line — a lightweight, high-performance upgrade over heavy stock steel sprockets. Engineered for powersports and motorcycle racing applications, this sprocket delivers a meaningful reduction in rotating mass, translating to sharper throttle response and improved drivetrain efficiency.

Key Features:

• 530 Chain Pitch — fits standard 530-series drive chains
• 45 Teeth — ideal for adjusting final drive gearing toward acceleration
• CAT5 Aluminum Construction — specially formulated alloy per Vortex specifications for an optimal strength-to-weight ratio
• 100% CNC Machined in the USA — precision manufacturing ensures concentricity and long-term durability
• Lightening Holes — strategically placed to reduce rotating mass without sacrificing structural integrity
• Unique Saber Tooth Groove Design — Vortex patented tooth profile increases sprocket longevity and chain engagement
• Anodized Finish with Contrasting Silver Machine Cuts — durable color finish resists corrosion and wear

Vortex rear sprockets are made to precise specifications, ensuring proper concentricity and fit. The 427ZRV4-45 is a direct bolt-on replacement designed for riders seeking a performance-oriented sprocket with race-proven construction and American craftsmanship.