At DMG Motorsports, we present the Vortex F5 Rear Sprocket in 45-tooth, 520 pitch, Black Hardcoat finish (part number 840AK-45) — a race-bred aluminum sprocket built for riders who demand less rotating mass without sacrificing durability. Machined from premium 7075 aluminum and treated with Vortex's signature PTFE black hardcoat process, this sprocket is designed to shed weight, resist wear, and keep your Yamaha's drivetrain looking sharp mile after mile. Whether you're chasing lap times on the track or simply want a cleaner, tougher alternative to a stock steel sprocket, this Vortex F5 delivers proven performance trusted by champions.

Features:

• CNC machined from 7075 aluminum for amazing strength and light weight
• Hard anodized with a jet black dye for a sharp, aggressive look
• PTFE coated for added lubricity and durability, increasing wear resistance
• Unique tooth design that increases sprocket longevity
• Vortex's patented sprocket design, unlike any other sprocket on the market
• 45-tooth, 520 pitch configuration for Yamaha applications
• Lighter than OEM steel sprockets, reducing rotating mass for improved acceleration and handling
• Trusted by champions in Motocross, Supercross, and Road Racing