Renthal Twinring™ Rear Sprocket - 49 Tooth - Silver (Part Number 2240-520-49GPSI)

The Renthal Twinring™ Rear Sprocket features a high-strength Ultralight™ 7075 T-6 aluminum inner ring, providing exceptional durability and lightweight performance for demanding riding conditions. The outer ring is crafted from electro-less nickel-coated steel, offering increased resistance to wear and corrosion while maintaining a minimal material design to keep overall weight low. The manufacturing process involves expanding the outer ring at 200°C and fitting it over the inner, creating an interference fit combined with a wave pattern that ensures a permanent bond for the sprocket's lifespan. This advanced construction enhances strength and longevity, making it ideal for high-impact applications.
The sprocket includes flat socket head screws that add extra strength during side impacts and prevent contact with the chain guide, reducing potential damage. Self-cleaning mud grooves between each tooth help prevent dirt buildup, which decreases wear and maintains optimal chain engagement. The design ensures the sprocket outlasts standard all-aluminum alternatives by three times while remaining significantly lighter than traditional steel sprockets, delivering a perfect balance of durability and weight savings for aggressive riding and racing scenarios.
Overall, the Renthal Twinring™ Rear Sprocket offers a robust, lightweight, and maintenance-friendly solution for riders seeking maximum performance and longevity from their drivetrain components. Its innovative construction and high-quality materials make it a reliable choice for off-road, motocross, and enduro applications, ensuring your bike performs at its best over extended use.

Features:

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

• Outer ring constructed from electro-less nickel-coated steel for enhanced wear resistance

• Interference fit with wave pattern provides a permanent, secure bond

• Flat socket head screws increase strength and prevent contact with chain guide

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

• Three times longer lifespan than standard all-aluminum sprockets

• Lighter than traditional steel sprockets for improved performance