Sigma One Carbon Aero Stem arm cups making it the ultimate solution

making it the ultimate solution for triathletes and cyclists

these extenders provide the fine-tuned adjustments that can make all the difference in your performance

By solving potential compatibility issues such as bolt spacing

which directly translates into faster times

zip-tie mounting slots

Sigma One Carbon Aero Stem arm cups making it the ultimate solutionSigma One: The Pinnacle of Aero Stem Design The TriRig Sigma One is an advanced carbon aero stem, designed to deliver unmatched integration, aerodynamic efficiency, and versatility for road, triathlon, or hybrid bike setups. Born from the innovative Alpha One aerobar, Sigma One is the only stem on the market that accepts a stack of mono risers, integrating seamlessly with the tilting Dragonfly cup mount system. This unique design allows you to adjust