Renthal 5240-520-52GPSI Twinring 520 Chain 52-Tooth Rear Sprocket Silver Grooved

The Renthal 5240-520-52GPSI Twinring Rear Sprocket is a premium 52-tooth, 520-pitch chainwheel engineered for off-road and enduro riders who demand maximum durability without unnecessary weight. Built on over 50 years of motocross sprocket manufacturing expertise and refined with input from top factory race teams, the Twinring is Renthal's ultimate rear sprocket solution.

Dual-Material Twinring Construction:

• Inner ring is precision CNC-machined from high-strength Ultralight 7075-T6 aluminum alloy, keeping overall sprocket weight to a minimum
• Outer chain ring is electroless nickel-coated hardened steel for superior wear resistance and long-term durability
• The outer ring is heat-expanded to 200°C and permanently press-fitted over the inner ring, creating an interference-fit bond that lasts the life of the sprocket
• Flat socket head screws provide additional strength during side impacts and eliminate contact with the chain guide

Key Features:

• 52 teeth, 520 chain pitch — Silver finish
• Unique flat face design keeps the Twinring as narrow as a standard chainwheel
• Self-cleaning mud grooves between every tooth on both sides prevent dirt buildup and reduce chainwheel wear
• Outlasts a standard all-aluminum sprocket by up to 3 times, while remaining significantly lighter than an all-steel sprocket
• Precision CNC machining ensures tight tolerances, optimal concentricity, and accurate tooth profile for maximum power transfer

The Renthal Twinring 5240-520-52GPSI delivers the ideal balance of lightweight performance and extended service life, making it a top choice for serious off-road, motocross, and enduro riders.