At DMG Motorsports, we present the Vortex CAT5 Rear Sprocket in 42T, 520 pitch, Black finish (part #251AZK-42) - a race-inspired upgrade built for Honda models running the 520 chain conversion. This sprocket is anodized first and then CNC machined from premium 7075 aluminum, exposing bright silver highlights along the machined edges while the surrounding surface retains its deep, durable black finish. The result is a sprocket that looks as aggressive as it performs, shedding unnecessary rotating mass compared to a stock steel unit to help sharpen acceleration and handling. Backed by Vortex's reputation among racers and trackday riders alike, this CAT5 sprocket brings together style, strength, and function in one component. DMG Motorsports is proud to offer this trusted Vortex part to riders looking to upgrade their drivetrain with confidence.

Features:

• Anodized first, then CNC machined from 7075 aluminum for a striking black finish with contrasting silver highlights
• Lightweight aluminum construction reduces rotating mass versus OEM steel sprockets, improving acceleration and handling
• Unique saber tooth groove design increases sprocket longevity and supports efficient power transfer
• Vortex's patented sprocket design and specially formulated alloy are unlike any other sprocket on the market
• 100% CNC manufactured to tight tolerances in the U.S.A.
• 42-tooth, 520-pitch configuration designed for Honda applications running a 520 chain conversion
• Trusted by champions and proven in competitive racing environments

Fitment