Renthal Twinring Rear Sprocket - 51T - 520 - Black - 1120-520-51GPBK

The Renthal Twinring™ rear sprocket provides the ultimate combination of light weight and exceptional durability. Engineered for performance and longevity, this sprocket is a top choice for demanding riders.

Description

Renthal's Twinring™ rear sprocket utilizes a unique two-piece design. The inner ring is machined from high-strength Ultralight™ 7075 T-6 aluminum, the same material used in Renthal's renowned standard sprockets, ensuring minimal weight and maximum strength. The outer ring is constructed from electro-less nickel-coated steel, providing exceptional wear resistance and a long service life. This outer ring is carefully engineered with minimal material to maintain a low overall weight. The two rings are permanently bonded using an interference fit achieved by expanding the outer ring at 200°C before assembly, combined with a wave pattern to ensure a secure connection. Flat socket head screws further enhance the chainwheel's strength, especially during side impacts, and prevent contact with the chain guide. Self-cleaning mud grooves between each tooth prevent dirt buildup, reducing chainwheel wear and minimizing weight. The Renthal Twinring™ sprocket lasts up to three times longer than a standard all-aluminum sprocket while remaining significantly lighter than an all-steel rear sprocket. Upgrade to the Renthal Twinring™ for superior performance and durability on the track or trail.

Features & highlights

• Inner ring made from Ultralight™ 7075 T-6 aluminum for maximum strength and minimal weight.
• Electro-less nickel-coated steel outer ring provides exceptional durability and wear resistance.
• Unique two-piece design offers the best combination of light weight and long life.
• Interference fit and wave pattern ensure a permanent bond between the inner and outer rings.
• Flat socket head screws add additional strength and prevent chain guide contact.
• Self-cleaning mud grooves prevent dirt buildup and reduce wear.
• Outlasts standard aluminum sprockets by up to 3x while being lighter than steel sprockets.

Technical specifications

• Brand: Renthal
• Product Name: Sprocket
• Mounting Position: Rear
• Chain Size: 520
• Tooth Count: 51
• Material: 7075-T6 Aluminum & Nickel-coated Steel
• Color/Finish: Black
• Type: Drive

Important to know

No additional hardware is included.