Renthal 5240-520-48GPSI Twinring Rear Sprocket 48T 520 Chain Grooved Silver

The Renthal 5240-520-48GPSI Twinring Rear Sprocket is a premium 48-tooth, 520-pitch rear chainwheel engineered for off-road and enduro riders who demand both durability and lightweight performance. Built on over 50 years of motocross sprocket manufacturing expertise, the Twinring is the result of collaboration with Renthal's top factory race teams.

Dual-Material Twinring Construction:

• Outer Ring: Electroless nickel-plated hardened steel for maximum wear resistance and extended service life
• Inner Ring: Ultralight 7075 T6 aluminum to minimize weight and unsprung mass
• Permanent Bond: The outer steel ring is expanded to 200°C before being fitted to the aluminum inner — cooling locks the two rings together permanently for the life of the sprocket
• Flat Socket Set Screws: Prevent lateral movement between the rings during high-velocity side impacts

Key Features:

• CNC machined individually at Renthal's UK engineering facilities to the tightest possible tolerances for accurate, reliable fitment
• Self-cleaning mud grooves between every tooth on both sides prevent dirt and debris buildup that accelerates wear
• Flat face design keeps overall weight to a minimum while maintaining the same narrow profile as a standard sprocket
• Silver anodized finish for corrosion resistance and a clean appearance
• 48 teeth, 520 chain pitch

The Renthal Twinring delivers the best of both worlds — the long-wearing toughness of a steel sprocket with the weight savings of an aluminum design — making it the ideal upgrade for motocross, enduro, and off-road riding.