Renthal TwinRing Rear Sprocket 48T Black 520 Pitch 1540-520-48GPBK

If you're running a 520 chain and demand sprocket durability that won't compromise your bike's weight, the Renthal TwinRing rear sprocket delivers the performance advantage you need. The dual-ring construction—pairing a lightweight 7075 T-6 aluminum inner ring with an electro-less nickel-coated steel outer ring—outlasts conventional all-aluminum sprockets by three times while staying significantly lighter than all-steel alternatives. Self-cleaning mud grooves and permanent thermal bonding mean you get extended service life and reduced maintenance, giving you more time riding and less time worrying about wear.

• Tooth Count: 48T
• Chain Pitch: 520
• Color: Black
• Inner Ring: Ultralight™ 7075 T-6 aluminum
• Outer Ring: Electro-less nickel-coated steel
• Bonding Method: Thermal interference fit
• Weight: ~1.70 lbs
• Impact Resistance: Flat socket head screws
• Self-Cleaning: Mud groove design
• MPN: 1540-520-48GPBK
• Installation: Bolt-on fitment