Renthal Twinring™ Rear Sprocket 51 Tooth - Silver | Part Number 2240-520-51GPSI

The Renthal Twinring™ Rear Sprocket, part number 2240-520-51GPSI, is engineered for durability and lightweight performance, making it an ideal choice for off-road and motocross enthusiasts. Crafted from high-strength Ultralight™ 7075 T-6 aluminum for the inner ring, this sprocket provides exceptional strength while maintaining a low weight profile. The outer ring is made of electro-less nickel-coated steel, offering superior resistance to wear and corrosion, ensuring a long service life.
The manufacturing process involves expanding the steel outer ring at 200°C and fitting it over the aluminum inner ring, creating a permanent interference fit enhanced by a wave pattern for a secure, durable bond. Flat socket head screws reinforce the structural integrity during side impacts and prevent contact with the chain guide, further protecting the sprocket during intense riding conditions. Self-cleaning mud grooves between each tooth help prevent dirt accumulation, reducing wear and maintaining optimal performance over time.
This sprocket is designed to last up to three times longer than standard all-aluminum sprockets, thanks to its robust construction and innovative manufacturing techniques. Despite its durability, it remains significantly lighter than an all-steel sprocket, providing a balance of strength and weight savings essential for competitive riding. Whether you're upgrading your bike for improved longevity or seeking a reliable component for demanding terrains, the Renthal Twinring™ Rear Sprocket delivers high performance and lasting value.

Features:

• Inner ring made from high-strength Ultralight™ 7075 T-6 aluminum for strength and weight reduction

• Outer ring constructed from electro-less nickel-coated steel for durability and corrosion resistance

• Interference fit with wave pattern ensures a permanent bond for the life of the sprocket

• Flat socket head screws provide additional strength during side impacts and prevent contact with chain guides

• Self-cleaning mud grooves between teeth reduce dirt buildup and wear, maintaining performance