Moto-Master Fusion Series Dual Ring Rear Sprocket, 49-Tooth Blue, Yamaha (620093449)

Upgrade your Yamaha motorcycle’s final-drive performance with the MOTO-MASTER Fusion Series Dual Ring Rear Sprocket, Part Number 620093449. This 49-tooth rear sprocket combines a hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier to deliver a durable and lightweight solution for demanding street and off-road use. Its blue anodized carrier adds a clean, distinctive finish while helping protect the aluminum from wear and corrosion.
The specialized heat-shrink manufacturing process permanently locks the outer ring and carrier together, creating a precise interlock designed for dependable long-term service. Compared with a conventional steel sprocket, the Fusion Series design reduces weight by approximately 50 percent, helping minimize unsprung and rotating mass without sacrificing the strength needed for high-load riding conditions. The hardened steel outer ring is engineered to outlast a comparable aluminum sprocket by up to three times, providing a practical balance of durability and performance.
Feature: Hardened and nickel-coated steel outer ring helps resist wear and extends service life.
Feature: Aircraft-grade 7075-T6 aluminum carrier provides strength with reduced weight.
Feature: Dual-ring construction weighs approximately 50 percent less than a conventional steel sprocket.
Feature: Specialized heat-shrink procedure permanently secures the outer ring and carrier.
Feature: Blue anodized carrier coating improves durability and delivers a distinctive appearance.
Feature: CAD designed, CNC machined, and laser cut for precise manufacturing quality.
Designed specifically for compatible Yamaha applications, the MOTO-MASTER Fusion Series rear sprocket is a reliable choice for riders seeking precise fitment, reduced rotating mass, and durable chain-drive performance. Verify motorcycle compatibility and the required chain size before installation.

Features:

• Hardened and nickel-coated steel outer ring helps resist wear and extends service life

• Aircraft-grade 7075-T6 aluminum carrier provides strength with reduced weight

• Dual-ring construction weighs approximately 50 percent less than a conventional steel sprocket

• Specialized heat-shrink procedure permanently secures the outer ring and carrier

• Blue anodized carrier coating improves durability and appearance

• CAD designed, CNC machined, and laser cut for precise manufacturing quality

Ships from Parts Unlimited.