At DMG Motorsports, we present the Vortex F5 Rear Sprocket 47T-530 Black Hardcoat Aluminum for Yamaha (840K-47) — a race-proven drivetrain upgrade built to shed weight and boost durability without sacrificing strength. Vortex has been engineering top-tier racing components for over 15 years, and this F5 sprocket carries that same championship-winning pedigree straight to your bike. Machined from premium 7075 aluminum and finished with a jet-black PTFE hard coat, this 47-tooth, 530-pitch sprocket delivers the reduced rotating mass, tighter tolerances, and long-term wear resistance that serious riders demand.

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 adds lubricity, reduces friction, and increases wear resistance
• 100% CNC manufactured in the USA to tight tolerances for precise, concentric fitment
• Unique patented tooth design increases sprocket longevity and smooths power delivery
• 47-tooth, 530-pitch configuration engineered for Yamaha applications
• Lightweight aluminum construction reduces rotating mass versus OEM steel sprockets, aiding acceleration and handling
• Trusted by champions across Motocross, Supercross, Road Racing, and Flat Track competition