TriRig Alpha One Carbon Aero Bar/Stem Combo System

The TriRig Alpha One Carbon Aero Bar/Stem Combo System is a fully integrated cockpit built for triathletes who need precise, repeatable positioning without the usual tangle of spacers and adapters. The carbon construction keeps weight in check while the entire system — stem, base bar, and extension mounts — works as a single cohesive unit rather than an assembly of parts.

What sets the Alpha One apart is how quickly it adapts. TriRig's patented single-bolt stack adjustment delivers 140mm of vertical range with nothing more than a 4mm hex wrench, and the notched Sawtooth Monopost locks that position solidly once you've found it. A two-bolt tilt adjustment adds up to 17 degrees of bar rotation for further fine-tuning. Multiple integrated accessory mount bosses support BTA hydration, computers, and storage, and the Universal Dragonfly system provides precise arm cup placement with broad extension compatibility. The design is UCI-legal, so it works from training rides through sanctioned racing.

TriRig Alpha One Carbon Aero Specs at a Glance

• Material: Carbon construction
• Stack adjustment: 140mm vertical range, single-bolt adjustment
• Bar rotation: Up to 17 degrees via two-bolt tilt adjustment
• Mounting: Universal Dragonfly arm cup system, integrated accessory bosses
• Compliance: UCI-legal