e13 (e*thirteen) (BOOST)

e13 (e*thirteen) (BOOST) Narrow wide chainrings are specially designed for the e*thirteen TRS, LG1 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): 47g (26T), 54g (28T), 58g (30T), 63g (32T), 70g (34T).
  • Weight Oval (+/-1g):
  • Chainline (mm): 50.6mm (26T), 51mm (28T), 52mm (30T), 53mm (32T).
  • Chainline Oval (mm):
  • Offset (mm): 
  • Offset Oval (mm): 4.3mm (26T), 3.9mm (28T), 2.9mm (30T), 1.9mm (32T).
  • Compatible with: e*thirteen TRS, LG1 crancksets
  • Surface coating: Colored anodized