Moto-Master Fusion Series Dual Ring Rear Sprocket, 47-Tooth, Blue, MX 85 (620183447)

Upgrade your MX 85 with the MOTO-MASTER Fusion Series Dual Ring Rear Sprocket, part number 620183447. Designed for demanding motocross use, this dual-ring sprocket combines a hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier. The result is a durable, lightweight drivetrain component engineered to deliver dependable performance while reducing unsprung weight compared with a conventional steel sprocket.
The specialized heat-shrink manufacturing process permanently interlocks the precisely manufactured outer ring and carrier for a secure, accurately aligned assembly. The hardened steel ring is designed to outlast an aluminum sprocket by up to three times, helping provide extended service life under demanding riding conditions. The blue anodized carrier adds a durable protective finish and a distinctive appearance to your motorcycle.
Feature: Dual-ring rear sprocket engineered for MX 85 applications
Feature: 47-tooth configuration for compatible motocross drivetrain setups
Feature: Hardened, nickel-coated steel outer ring for enhanced wear resistance
Feature: Aircraft-grade 7075-T6 aluminum carrier for strength and reduced weight
Feature: Up to three times the service life of an aluminum sprocket under comparable use
Feature: Approximately 50% lighter than a conventional steel sprocket
Feature: Specialized heat-shrink procedure permanently interlocks the outer ring and carrier
Feature: Blue anodized carrier coating adds durability and corrosion resistance
Feature: CAD designed, CNC machined, and laser cut using advanced manufacturing technology
Built for riders who expect precision and durability, the MOTO-MASTER Fusion Series rear sprocket provides a practical performance upgrade for compatible MX 85 motorcycles. Its precision-machined construction supports consistent chain engagement and reliable power transfer, while the lightweight aluminum carrier helps reduce rotational and unsprung mass. Verify motorcycle compatibility and drivetrain specifications before installation.

Features:

• Dual-ring rear sprocket engineered for MX 85 applications

• 47-tooth configuration for compatible motocross drivetrain setups

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

• Up to three times the service life of an aluminum sprocket under comparable use

• Aircraft-grade 7075-T6 aluminum carrier for strength and reduced weight

• Approximately 50% lighter than a conventional steel sprocket

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

• Blue anodized carrier coating adds durability and corrosion resistance

• CAD designed, CNC machined, and laser cut using advanced manufacturing technology

Ships from Parts Unlimited.