Get steel-level durability without the full-steel weight. The MOTO-MASTER Fusion Dual Rear Sprocket is designed for riders who want a longer-lasting drivetrain and sharper acceleration feel. By combining a special hardened, nickel-coated steel outer ring with an aircraft-grade 7075-T6 aluminum carrier, it delivers exceptional wear resistance while keeping rotating mass low.
This dual-material construction helps reduce the frequent replacement cycle common with all-aluminum sprockets and can improve overall drivetrain efficiency for motocross and enduro use. The outer ring and carrier are precisely manufactured and permanently interlocked using a specialized heat-shrink process for reliable strength under load.
Key features:
✅ Hardened, nickel-coated steel outer ring for maximum wear resistance
✅ Up to 3x the lifespan compared to a typical aluminum sprocket
✅ Lightweight 7075-T6 aluminum carrier to reduce rotating mass
Benefits of use:
🔹 Longer service intervals thanks to a durable steel tooth ring
🔹 Improved ride feel with less weight than a conventional steel sprocket (about 50% less)
🔹 Race-ready manufacturing: CAD designed, CNC machined and laser cut for consistent fit and performance
Technical specifications:
📌 Brand: MOTO-MASTER
📌 Model: Fusion (Dual)
📌 Mounting position: Rear
📌 Chain size: 420
📌 Tooth count: 48T
📌 Materials: 7075-T6 Aluminum carrier + Steel outer ring
📌 Finish: Black (anodized carrier)
📌 Vendor part number: 620063248
Why choose this product?
⭐ Premium dual-material design for an ideal balance of durability and weight
⭐ Permanent interlock construction via specialized heat-shrink procedure for dependable strength
⭐ A smart upgrade for riders who want reliable gearing performance in harsh off-road conditions
