At DMG Motorsports, we present the Vortex F5 Rear Sprocket in 45T-520 pitch, black hardcoat finish, built specifically for BMW applications converted to a 520 chain. This is Vortex's flagship F5 racing sprocket, engineered to shed rotational weight while standing up to the punishment of aggressive street riding and track abuse. Whether you're chasing lower unsprung weight for quicker acceleration or simply want a sprocket that will outlast the stock unit, this Vortex 193AK-45 delivers the strength, precision, and finish that racers rely on.

Vortex has spent decades building components trusted by professional road racing teams, and this sprocket carries that pedigree. The F5 Hardcoat process applies a PTFE (Polytetrafluoroethylene) coating after the sprocket is cut, placing it directly on the sprocket's teeth where it offers a much lower coefficient of friction than raw aluminum along with wear and heat resistance, giving the sprocket a longer lifespan than standard aluminum with less drivetrain friction loss. Every sprocket is 100% CNC manufactured in the U.S.A. from a specially formulated alloy per Vortex specifications, ensuring tight tolerances and consistent performance run after run.

Features:

• CNC machined from 7075 aluminum for amazing strength and light weight
• Hard anodized with a jet black dye for a durable, race-ready look
• PTFE coated directly on the teeth for added lubricity, reduced friction, and increased wear resistance
• Unique tooth design that increases sprocket longevity and improves power delivery
• 45-tooth, 520-pitch configuration for BMW models running a 520 chain conversion
• 100% CNC manufactured in the U.S.A. from a specially formulated Vortex alloy
• Trusted by champions and proven in professional road racing competition

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