SRAM GXP (BOOST) Direct Mount Narrow wide chainrings are specially designed for SRAM X01, X0, GX, X9, XX1, X01, X1, NX, X01/XX1 Eagle cranksets systems.
Compatible with all 9, 10, 11 and 12 speed chains.


  • Narrow wide system : thanks to the variable thickness of the teeth, the chain is hold from dropping even in rough sections!

  • Slow and soft spinning compared to a classic chainring thanks to the special design of the teeth profile.

  • Increased chain retention during strong jolts thanks to the improved teeth height.

  • Mud evacuation system for a top performance whatever is the weather.

  • Gain 150 to 400 grams on your bicycle weight when going from a classic configuration (with front derailleur and chain guide) to a single front chainring made by Amber Bikes.

  • Made from hard wearing aluminum alloy.

Technical specifications

  • Material: 7075-T6
  • Manufacturing: CNC Milling
  • Chainline/Offset (mm): 47,5/7,2 (26T), 47,5/7,2 (28T), 47,7/7 (30T), 47,9/6,8 (32T), 49,1/5,6 (34T), 50,3/4,4 (36T), 51,8/2,9 (38T), 52.3/2,4 (40T)
  • Weight (+/-1g): 43g (26T), 47g (28T), 55g (30T), 64g (32T), 63g (34T), 69g (36T), 78g (38T), 86g (40T)
  • Chainline/Offset Oval (mm): 50,5/4,2 (26T), 50,5/4,2 (28T), 50,7/3,2 (30T), 52,3/3 (32T), 53.3/3 (34T)
  • Compatible with: SRAM X01, X0, GX, X9, XX1, X01, X1, NX, X01/XX1 Eagle cranksets
  • Surface coating: Colored anodized