Renthal 5240-520-50GPSI Twinring 520 Rear Sprocket 50-Tooth Silver

The Renthal 5240-520-50GPSI Twinring Rear Sprocket is a premium 50-tooth, 520-pitch rear chainwheel engineered for off-road and enduro riders who demand maximum durability without sacrificing weight savings. Backed by over 50 years of motocross rear sprocket manufacturing expertise, the Twinring represents Renthal's most advanced dual-material sprocket design.

Dual-Material Twinring Construction:

• Hardened steel outer ring is thermally expanded to 200°C and permanently bonded to the aluminum inner core — creating a bond designed to last the life of the sprocket
• Ultralight 7075 T6 aluminum inner core reduces unsprung weight for improved power delivery and handling response
• Electroless nickel-coated steel outer ring provides exceptional wear resistance against chain abrasion
• Flat face design keeps the Twinring as narrow as a conventional sprocket while minimizing overall weight
• Self-cleaning mud grooves between every tooth on both sides prevent dirt and debris buildup in demanding off-road conditions
• Flat socket head screws provide additional structural strength during side impacts
• Precision CNC machined to extremely tight tolerances for accurate concentricity, tooth profile, and fitment
• Silver anodized finish — the 15-step anodizing process creates an integral surface coating that resists corrosion

Specifications:

• Chain Pitch: 520
• Tooth Count: 50T
• Finish/Color: Silver (PSI)
• Material: 7075 T6 Aluminum inner / Hardened steel outer
• Product Line: Twinring
• Part Number: 5240-520-50GPSI

The Renthal Twinring is the sprocket of choice for riders who want to spend more time on the trail and less time in the garage. Its industry-leading dual-material construction delivers the longest-lasting performance of any off-road rear sprocket in Renthal's lineup.