Moto-Master Fusion Series Dual Ring Rear Sprocket 49-Tooth Blue TM (620193449)

Upgrade your motorcycle’s final-drive performance with the MOTO-MASTER Fusion Series Dual Ring Rear Sprocket, part number 620193449. Designed for riders who demand a balance of durability, reduced weight, and precise power transfer, this 49-tooth rear sprocket combines a hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier. The result is a strong, lightweight sprocket assembly engineered for demanding riding conditions.
The specialized heat-shrink manufacturing process permanently interlocks the outer ring and carrier, creating a secure connection designed to maintain reliable performance over time. Compared with a conventional steel sprocket, the MOTO-MASTER Fusion Series design weighs approximately 50% less while the hardened steel outer ring is engineered to provide up to three times the service life of an aluminum sprocket. This combination helps reduce unsprung weight without sacrificing wear resistance at the tooth surface.
The carrier features a durable blue anodized finish that adds protection against wear and gives the sprocket a clean, factory-inspired appearance. CAD design, CNC machining, and laser cutting ensure accurate production and consistent fitment. The MOTO-MASTER Fusion Series Dual Ring Rear Sprocket is a practical performance upgrade for compatible TM motorcycles and is built to support dependable drivetrain operation in motocross, off-road, and other high-load applications.

Features:

• Hardened, nickel-coated steel outer ring helps resist wear and delivers up to three times the service life of an aluminum sprocket

• Lightweight construction weighs approximately 50% less than a conventional steel sprocket

• Aircraft-grade 7075-T6 aluminum carrier provides a strong and lightweight foundation

• Heat-shrink interlock permanently secures the outer ring to the carrier

• Blue anodized carrier coating enhances durability and appearance

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

• 49-tooth rear sprocket configuration

• Designed for compatible TM motorcycle applications

Ships from Parts Unlimited.