At DMG Motorsports, we present the Vortex F5 Rear Sprocket - Aluminum 42T-520 Black Hardcoat (840AK-42) for Yamaha, a race-bred drivetrain upgrade built to shed weight without sacrificing durability. This sprocket is designed for riders who demand crisper acceleration, lighter rotating mass, and a component that can stand up to the abuse of track days, canyon carving, or full-blown competition. Vortex has built its reputation supplying championship-winning teams, and this F5 sprocket carries that same pedigree straight to your Yamaha's rear wheel.

Features:

• CNC machined from 7075 aluminum for amazing strength and light weight
• Hard anodized with a jet black dye for a durable, race-ready finish
• PTFE hard-coat applied over the anodizing for added lubricity, increased wear resistance, and easier cleaning
• Unique tooth design engineered to increase sprocket longevity and improve power transfer
• 42-tooth, 520-pitch configuration for direct fitment on compatible Yamaha applications
• Significantly lighter than an OEM steel sprocket, reducing rotating mass for improved acceleration and handling
• 100% CNC manufactured to tight tolerances for a precise, reliable fit
• Trusted by champions across professional roadracing paddocks