Moto-Master Fusion Series Dual Ring Rear Sprocket, 48-Tooth, Black, MX 85 (620183248)

Upgrade your motorcycle’s rear drivetrain with the MOTO-MASTER Fusion Series Dual Ring Rear Sprocket, part number 620183248. Designed for MX 85 applications, this 48-tooth sprocket combines a hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier to deliver a strong, lightweight solution for demanding motocross use. The black finish provides a clean, professional appearance while supporting long-lasting performance.
The specialized dual-ring construction is engineered to outlast a conventional aluminum sprocket by up to three times while weighing approximately 50% less than a standard steel sprocket. The precisely manufactured outer ring and carrier permanently interlock through a specialized heat-shrink procedure, creating a secure assembly designed to maintain alignment and durability under repeated acceleration, braking, and suspension movement.
MOTO-MASTER uses CAD design, CNC machining, and laser-cutting technology to produce the Fusion Series sprocket with consistent accuracy. The carrier is color anodized for additional surface durability and resistance to wear, while the nickel-coated outer ring helps protect the sprocket from the harsh conditions commonly encountered on motocross tracks. This combination of materials and manufacturing methods provides a balanced blend of reduced rotating weight, dependable strength, and extended service life.
Select the MOTO-MASTER Fusion Series Dual Ring Rear Sprocket when you need a high-performance replacement engineered specifically for MX 85 motorcycles. Verify fitment, chain compatibility, and final-drive requirements before installation. Professional installation and proper chain adjustment are recommended to help maximize sprocket life and drivetrain performance.

Features:

• 48-tooth rear sprocket designed for MX 85 applications

• Hardened, nickel-coated steel outer ring for enhanced durability

• 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 procedure permanently interlocks the outer ring and carrier

• Color anodized carrier coating for added durability

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

• Black finish

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