TriRig High Side EVO Arm Cups

The TriRig High Side EVO Arm Cups are carbon fiber cups with tall walls, shaped with what TriRig calls an ergonomic 3D-tapered profile. TriRig designs them for riders who want a more secure, supportive aero position without extra bulk. The high-wall construction increases arm wrap and surface contact, which TriRig says improves stability and reduces unwanted movement on the bars. The aim, in TriRig's words, is a locked-in feel with a slim, low-profile look.

Fit is a medium-snug 95mm arc diameter, intended to suit a wide range of riders. TriRig lists the open back at 535 grams per pair and the closed back at 625 grams per pair. The closed back is fully closed behind the arm, and TriRig says it increases containment to help prevent arm drift and reduce fatigue on long efforts.

Mounting uses a 3x5 bolt hole pattern with elongated slots, so you can adjust reach, width and arm position for anything from an aggressive race setup to an endurance-focused one. TriRig intends the carbon fiber construction to hold up over the long term. The High Side EVO is for riders who want tall-walled carbon cups with published weights and a wide fit range, and who are comfortable fine-tuning the setup themselves. Each version is offered with a replacement pad set.