Rotor REX

Rotor REX Narrow wide chainrings are specially designed for the Rotor REX cranks.
IMPORTANT: While placing order, please leave a comment if you need it compatible with a normal chain or 12-speed (incl. Shimano HG+ & SRAM AXS Flattop)

  • Narrow wide system : thanks to the variable thickness of the teeth, the chain is hold from dropping even in rough sections!
  • Smooth 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):
  • Weight Oval (+/-1g):
  • Chainline (mm):
  • Chainline Oval (mm): 50mm (28-36T).
  • Offset (mm):
  • Offset Oval (mm): 7.6mm (28T), 7.1mm (30T), 6.1mm (32T), 5.1mm (34T), 4.1mm (36T), 3.1mm (38T).
  • Compatible with: Rotor REX cranksets
  • Surface coating: Colored anodized