SRAM RED AXS E1 Shifter and Caliper Variant:Left Shifter / Caliper 5 mmRim Width (inner): 21

5 mmRim Width (inner): 21 mmHub: ZR1 TrackAxle Options: 40x15 mm

or 1700mm length for rear brakes

Rail : Stealth Xsilite

3 or newer

Vaypor G or Vaypor+ shoes an upgrade with the BOA Li2 Dial D kit

SRAM RED AXS E1 Shifter and Caliper Variant:Left Shifter / Caliper 5 mmRim Width (inner): 21*Front mounting hardware not included.* True one finger braking is finally here. The SRAM RED AXS E1 Shifter and Caliper overhauls hood and lever architecture to deliver breakthrough fit across all hand sizes, with easy access to powerful, smooth braking from anywhere on the bar. Truly independent reach and contact point adjustment allow for a highly personalized setup, with no risk of pinching your fingers or bottoming out no matter your settings.