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There are some very sexy integrated aero bars on the market right now. Profile Design's Carbon X. 3T's Ventus. Visiontech's Trimax. All these feature integrated stems. How does one divine what frame fits these bars?

Our popular F.I.S.T. Workshops have trained and certified more than 300 retail store owners and fitters, coaches, and manufacturers, and continue to train 100 more every Winter.

Tri bike fitters using the F.I.S.T. system often find they need a size bigger bike for their customers versus what the fit session indicates. Here's why.

This eighth article out of a series of eleven on tri bike fit describes the proper armrest drop for a triathlete; how to measure it; how to determine it.

This sixth article out of ten describes how we find a rider's proper cockpit length.

This second in a series of articles describing our tri bike fit system lays out the axioms on which our F.I.S.T. system relies.

This third article in our series on tri bike fit lays out the fitting protocol.

This description of how to determine the proper tri bike riding hip angle is the seventh article of eleven in which we describe the F.I.S.T. tri bike fitting process.

In this continuation of our series on tri bike fit, we tell you what we mean by terms like "seat angle" and "hip angle," that is, what landmarks we measure to, and why we choose them.

This is article number five out of eleven describing our F.I.S.T. Tri bike fit process.

Slowtwitch means different things to different athletes, but tri bike fit is the thing we're probably best known for. Herein is a description of our process for tri bike fit.

This is the ninth article in a series describing our F.I.S.T. process for tri bike fitting

This is the final installment of our series on our F.I.S.T. tri bike fit process.

This is the tenth of eleven installments in our explanation of our F.I.S.T. tri bike fit process.

Earlier in the decade I wrote an article on how bikes are sized, and the gist was that we ought to be looking at bikes from the point of view of head tubes and top tubes, and that's it. -- no more seat tube sizing.

In the final chapter of our stack and reach primer, we compare stack and reach with other ways of remaking sizing nomenclature.

Our primer on stack & reach continues with the second chapter in the series. We examine how stack and reach enable you to understand how a given bike will, or will not, fit you.

Certainly the great majority of folks can ride standard production tri bike sizes. But, because of the high centers of mass faced by triathletes when cornering and descending out of the aero position, the leggy types are the prime candidates for custom tri bikes. We'll take a look at the dynamics that can make a stock-geometry bike problematic.