At DMG Motorsports, we present the Vortex F5 Rear Sprocket 41T-520 in Black Hard-Coat (654AK-41) — a race-bred aluminum sprocket built for Yamaha riders who demand lighter rotating mass, sharper acceleration, and a finish that looks as aggressive as it performs. Vortex has long been a favorite among champions, and the F5 lineup delivers that same podium-proven engineering straight to your driveline.

Machined from premium 7075 aluminum, this sprocket is engineered to shed weight without sacrificing strength, helping reduce unsprung rotating mass for quicker throttle response and improved handling compared to a heavier OEM steel sprocket. The F5 Sprocket's aluminum construction makes it much lighter compared to an OEM steel sprocket and this leads to reduced rotating mass and allows for improved acceleration and handling. The jet-black PTFE hard-coat finish isn't just for looks — it's coated in an extremely durable PTFE hard-coat that not only looks spectacular but also reduces wear and makes cleaning a breeze.

Every F5 sprocket is 100% CNC-machined to look and perform its best, with each sprocket machined from 7075 T6 aluminum to a very high tolerance. Vortex's proprietary tooth geometry is designed to extend chain and sprocket life, and this exact fitment covers the 41-tooth, 520-pitch configuration for Yamaha applications, including the R1 and R1M platforms.

Features:

• CNC machined from 7075 T6 aluminum for a strong, lightweight, high-tolerance sprocket
• Jet-black PTFE hard-coat finish adds durability, wear resistance, and easy cleaning
• Lighter than OEM steel sprockets, reducing rotating mass for improved acceleration and handling
• Unique Vortex tooth design engineered to increase sprocket longevity
• 41-tooth, 520-pitch configuration built for Yamaha fitments including R1/R1M
• Race-proven design trusted by champions on the track and street