Renthal Twinring Rear Sprocket 520-51t Black

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.

Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.

GLS home delivery costs DKK 59.

We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.

There is a 14-day return policy. Read more