Vortex 251AZOV4-42 VTX Aluminum Rear Sprocket 42T Anodized Orange

The Vortex 251AZOV4-42 is a 42-tooth aluminum rear sprocket from Vortex Racing's VTX series, engineered for riders seeking a lightweight, high-performance alternative to stock steel sprockets. Precision CNC-machined from aerospace-grade 7075 aluminum alloy and finished with a striking anodized orange hard coat, this sprocket delivers significant unsprung weight savings while maintaining the durability demanded by street and track use.

Key Features:

• 42-tooth rear sprocket for optimized acceleration and gearing
• CNC-machined from 7075 aluminum alloy for maximum strength-to-weight ratio
• Hard anodized orange finish for corrosion resistance and visual appeal
• Precision drilled lightening holes reduce unsprung rotational mass
• Direct OEM bolt-on replacement — no modifications required
• Manufactured to tight tolerances for smooth, quiet chain engagement
• Part of Vortex's trusted VTX sprocket lineup used by racers and performance street riders worldwide

Swapping to the Vortex 251AZOV4-42 aluminum rear sprocket is one of the most cost-effective performance upgrades available, reducing rotational mass for quicker throttle response and improved acceleration. The durable hard anodized coating provides long service life comparable to steel sprockets when used with a quality chain and proper maintenance.