At DMG Motorsports, we present the Vortex F5 Rear Sprocket (43T-525, Black, Yamaha fitment, part #642K-43) — a race-proven, lightweight aluminum sprocket built to shed rotating mass and sharpen your bike's throttle response. Vortex has long been a favorite among road racers and trackday enthusiasts, and this F5 sprocket carries that racing pedigree straight to your Yamaha's rear wheel. Machined from premium 7075 aircraft-grade aluminum and finished in a durable jet black hardcoat, this sprocket is engineered to look as good as it performs while standing up to the demands of aggressive riding.

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 black hardcoat coating adds lubricity, increases wear resistance, and makes cleaning easier
• Unique tooth design increases sprocket longevity and improves chain engagement
• Lightweight aluminum construction reduces rotating mass for improved acceleration and handling versus OEM steel sprockets
• 100% CNC manufactured in the USA to Vortex's specially formulated alloy specifications
• Patented Vortex sprocket design trusted by champions on the racetrack
• 525 pitch, 43-tooth configuration designed for Yamaha applications