I'm going to show my bias, but if you can find a bike fitter with a decent selection of extensions, pads, clamps, etc., you would probably be heading in the right direction. I have about a dozen different aerobar extensions in house and we Frankenstein stuff together all the time.

If you happen to be in the Indianapolis area any time soon, look me up and we could experiment with some different options. Like you say, there's a lot to be gained in getting the wrists comfortable.

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Travis Rassat
Vector Cycle Works
Noblesville, IN
BikeFit Instructor | FMS | F.I.S.T. | IBFI
Toughman Triathlon Series Ambassador

Can't go wrong with Zipp Evo 110s or the 51SS ultimate. S-bends suck for comfort and aero.

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What's your CdA?

There are a lot of models, but not really that much variation in shapes.
To explain the PD range -
50a/c is intended for a very straight wrist angle if there is a lot of stack between extension mount and pad. Or to allow a high hands position with non tilting bars
35a/c is intended for for tilting bars - using a high rise extension with bars that can tilt just means you don't have as much contact between elbow and pads. Wrist angle slightly on the tight side of neutral
45/25a/c - again as a high rise bar it's more aimed at fixing non tilting bars. The idea being that you can pull forward to a shrug position on the 25 top section and hold on the bend or on the 45 for a control position. Ideally paired with Di2 to have shifters in both locations.

My personal preference is 45deg with an 80mm rise if actually holding the extensions, so the 35a is pretty good for me.

I expect that we'll see a reduction in the 100mm+ rise extensions in the next few years as most high bars start to offer tilt.

Criteria? Depends on how you perceive your bike and what you’re trying to accomplish.

If your bike is a tool to help put you in and maintain a good aero TT position, then there’s really only one choice: the ski bend that hits your desired hand stack and reach.

If on the other hand you see the bike as something to ride, and hold it how it tells you to hold it, then by all means get s bend or f bend or straight or whatever you think looks best or is “comfortable”.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

Really? Ski, s bend, straight and some brands have some minor variations. What else is out there?

TT bike is definitely a tool for racing. My A races are OD and I do the occasional sprint for fun. I generally finish near or on the podium in the races I've done. So goal is maximum performance in those races.

I have a road bike for "fun" and looking cool 😎.

I don't know why I didn't consider going to a fitter. My tt bike was fit by Trent nix here in plano last fall. Travis makes a good point.

And really, there can be only one.... ski bend.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

I think Trent gets what I’m saying and it would be a good idea to address this with your fitter.

I’d argue though that your TT bike is *not* a tool for racing.... that’s what *you* are for.

I’m actually the bike is a tool to hold you a certain way, hopefully comfortable powerful and aerodynamic.

This distinction is important. It affects what equipment choices you make and how you mold your machine to your body and vice versa.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

Agreed