104 BCD

104 BCD Narrow wide chainrings are specially designed for 1×9, 1×10, 1×11 systems.
Compatible with all 10 and 11 speed chains. (If you use a 9 speed system, you can use a 10 speed chain)


  • 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
  • Weight (+/-1g):  36g (30T), 37g (32T), 40g (34T), 50g (36T), 57g (38T), 56g (40T), 80g (42T)  
  • Compatible with: 9, 10, 11 Speed Chains
  • Surface coating: Colored anodized

Pre-Order means: We are a small company. We can't afford to keep too big stock. If you order, we will place the item in manufacturing plan. Please allow us up to 2 weeks for shipping your item. Often it takes less time.

Thank you for your help and understanding.