Renthal Twinring Rear Sprocket (51T) 2240-520-51GPSI - KTM / Husqvarna / Gas Gas / Beta 1990-2026

Product Description

Experience the ultimate combination of light weight and exceptional longevity with the Renthal Twinring Rear Sprocket. Designed for riders who demand maximum durability without sacrificing performance, this innovative hybrid sprocket delivers extended wear life compared to standard all-aluminum sprockets while remaining much lighter than a solid steel alternative.

The inner ring utilizes high-strength Ultralight 7075-T6 aluminum to reduce unsprung mass, while the outer ring features an electro-less nickel coated steel construction built for maximum wear resistance. Bound permanently through thermal expansion, the Twinring is engineered to handle harsh off-road and adventure riding conditions.

Top Features: Renthal Twinring Rear Sprocket

• Inner ring is the same high strength Ultralight 7075 T-6 aluminum used for the standard Renthal sprocket
• Outer ring is electro-less nickel coated steel for ultimate durability and is designed with the minimum amount of material to keep weight down
• The outer ring is expanded at 200°C and then fitted over the inner; this interference fit combined with the wave pattern ensures a permanent bond for the life of the chainwheel
• The flat socket head screws add additional strength to the chainwheel during side impacts and eliminates contact with the chain guide
• Self cleaning mud grooves between each tooth prevent dirt build upand reduce chainwheel wear and weight

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What makes the Twinring sprocket last longer than standard aluminum sprockets?
A: The outer ring is constructed from high-durability, electro-less nickel coated steel, allowing it to outlast a standard all-aluminum sprocket by 3 times.

Q: How is the steel outer ring attached to the aluminum inner ring?
A: The outer ring is heated and expanded at 200°C then fitted over the inner ring, creating a permanent interference fit backed by a wave pattern and flat socket head screws.

Expert Pro-Tip: When installing a hybrid or steel-toothed sprocket like the Twinring, always check your chain alignment and wear status. Pairing a new sprocket with a fresh or healthy chain ensures optimal engagement and prevents uneven wear patterns across the drivetrain.

Recommended Pairings:

• KTM 4-Stroke Performance Parts
• MX Chains
• Motorcycle Tools & Accessories

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