Moto-Master Fusion Series Dual-Ring Rear Sprocket 51-Tooth Blue for TM (620193451)

Upgrade your TM motorcycle with the MOTO-MASTER Fusion Series Dual-Ring Rear Sprocket, Part Number 620193451. Designed for demanding off-road and performance applications, this 51-tooth rear sprocket combines a hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier. The dual-ring construction provides the durability of steel at the wear surface while reducing overall weight compared with a conventional steel sprocket.
The MOTO-MASTER Fusion Series sprocket is engineered to deliver long service life and dependable chain engagement. Its specialized heat-shrink manufacturing process permanently interlocks the precisely manufactured outer ring and carrier, creating a secure, integrated assembly. Compared with an aluminum sprocket, the hardened steel outer ring is designed to last up to three times longer, helping maintain consistent performance through extended use and challenging riding conditions.
The blue anodized carrier adds a durable finish and distinctive appearance while helping protect the aluminum against everyday wear. CAD design, CNC machining, and laser cutting provide accurate production and clean, consistent geometry for reliable drivetrain operation. Built specifically for TM applications, this MOTO-MASTER rear sprocket offers a practical balance of strength, reduced weight, precision, and durability for riders who expect high-quality replacement components.

Features:

• Hardened, nickel-coated steel outer ring for enhanced wear resistance

• Designed to outlast an aluminum sprocket by up to three times

• Approximately 50% lighter than a conventional steel sprocket

• Aircraft-grade 7075-T6 aluminum carrier

• Specialized heat-shrink process permanently interlocks the outer ring and carrier

• Blue anodized carrier coating for added durability

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

• 51-tooth rear sprocket designed for TM motorcycles

Ships from Parts Unlimited.