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What is a 1x drivetrain and should you use one for triathlon?

We explain what a 1x drivetrain is, its pros and cons, and whether you should switch to a single for triathlon racing

Triathlon and Cycling Journalist

Last updated -

17 Jul 2025

Cast your eyes over the ranks of professional triathletes' bikes lined up in T1 and you'd do well to spot a front derailleur or double chainring on certain courses.
Whether they're racing aero r...

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Written by

Jack Evans

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