although it is not aTitanFlex, I have "repurposed" my Softride into a crit bike. Works quite well, better than my Scott Foil in the crits. NOT as good on hills!

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Should work fine. The setup is super adjustable, and I've found the BB to be stiff enough for climbing (I have the original, not the transition), and the beam stiff enough (I'm 180 on a Vanilla) that there's no bobbing. The main issue is weight. It's not going to be as light as a carbon road frame, but will have a comfort edge. The frame descends well (though it's also going to be a function of how you set up the weight distribution as much as anything); the flex in the beam helps grip during turns (like a moto suspension).

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