Renthal Twinring Rear Sprocket 48T Red 520 Chain 1540-520-48GPRD

Rear sprocket selection directly impacts your bike's acceleration, top-end speed, and drivetrain wear patterns—choosing the right tooth count and construction quality is non-negotiable for consistent performance. The Renthal Twinring rear sprocket combines dual-material engineering with proven durability to outlast standard aluminum sprockets by 3x while maintaining a weight advantage over all-steel alternatives. If you're chasing reliability without sacrificing acceleration response, this is the sprocket built for serious riders.

The dual-ring construction pairs a high-strength Ultralight™ 7075 T-6 aluminum inner ring with an electro-less nickel-coated steel outer ring, creating a permanent bond that resists the lateral forces and impact loads common in aggressive riding. The permanent bonding process—where the outer ring is expanded at 200°C and fitted over the inner ring—ensures zero movement between components for the life of the sprocket. Self-cleaning mud grooves between each tooth prevent dirt accumulation, reducing premature wear and maintaining optimal chain engagement across all riding conditions. Flat socket head screws add structural integrity during side impacts while eliminating contact with chain guides that can cause noise and premature failure.

• Tooth Count: 48T
• Chain Size: 520
• Color: Red
• Inner Ring: Ultralight™ 7075 T-6 aluminum
• Outer Ring: Electro-less nickel-coated steel
• Weight: Approximately 1.70 lbs
• Installation: Bolt-on
• MPN: 1540-520-48GPRD
• Durability: 3x longer lifespan than standard aluminum