At DMG Motorsports, we present the Vortex Front CS Sprocket Steel 15T-520 (Part #3291-15) — a heavy-duty replacement front sprocket engineered for a wide range of Yamaha sportbikes. Built by Vortex Racing, a name trusted by racers and enthusiasts for decades, this sprocket is manufactured from tough steel and induction hardened to deliver a stronger, quieter, and longer-lasting drivetrain component compared to stock offerings. Whether you're restoring a classic FZR1000 or maintaining a modern YZF-R6, this 15-tooth, 520-pitch sprocket is a direct-fit upgrade designed to keep your power delivery smooth and consistent.

Vortex's precision manufacturing process ensures every tooth is cut to tight tolerances, improving chain engagement and reducing wear over time. A protective zinc coating guards against corrosion, while drilled lightening holes shave unnecessary rotating mass for quicker acceleration and reduced drivetrain inertia. Backed by Vortex's reputation for quality components made to the tightest tolerances in the industry, this sprocket is an excellent choice for street riders and track-day enthusiasts alike looking to keep their bike running at its best.

Features:

• Precision manufactured and induction hardened to precise tolerances for improved strength and durability
• Zinc coated to resist corrosion and extend service life
• Drilled lightening holes reduce rotating mass for quicker throttle response
• 15-tooth, 520 chain pitch design for direct OEM-style fitment
• Manufactured by Vortex Racing, a trusted name in racing-grade sprockets and drivetrain components
• Fits a wide range of Yamaha models including FZ750, FZR1000, FZS600/FZ6, YZF-R6, YZF-R6S, YZF-R7, and GTS1000A
• Delivers a stronger, quieter, and longer-lasting alternative to stock sprockets