BH Bikes just popped up in Vimeo (via Bicycle World TV) with a new aero triathlon bike being tested at Faster wind tunnel in Arizona.

Taking only a few design cues from their current GC Aero (scooped downtube and seat tube), this new model brings a whole lot more to the table. This is clearly a prototype plastic frame, but if it holds its shape through to production, here’s what we’re seeing…

2013 BH Bikes Aerolight triathlon bike

Wide set seat stays hide linear pull “V-brake” style cantilevers on the rear, but note the little holes on the stays near the top of the brakes. Either they’re testing something like Shimano’s new Dura-Ace TT brakes also, or they’ll offer up the frame with options to run either style brake.

2013 BH Bikes Aerolight triathlon bike

Gone is the seatmast in favor of a flat surface on the top tube with an aero shaped seat post. The top tube and head tube mold around the rear of the stem for a much tighter looking (and smoother, faster) package. Much better looking than the standard stem stuck on the GC Aero.

2013 BH Bikes Aerolight triathlon bike

Front brakes are hidden behind the fork legs and are also mini-V brakes. More as we get it.

Thanks to Moe for the tip!


  1. I’m shocked that more road bikes don’t use mini-Vs. While I haven’t used the very top-end (i.e. Dura Ace) calipers, I’ve never met a caliper brake that performed as well as even a mid-range linear-pull…

  2. Interesting to see rapid prototyping being used on something as big as a frame. Still a massive waste of time to make the bike super aero given the massive lump riding the thing.

    You need to be doing aero testing with a rider. The bike by itself will tell you nothing of real use.

  3. @Rob: I’m assuming a bike like this and others in the aero/TT/Tri category are for racers and not weekend warriors like myself. At the top level, every tiny gain adds up.

  4. what i dont get is if theyre gonna use an aero-shaped v-brake up front, why still put it behind the fork? they ought to put it in the front, and blend the vbrake shape to the fork…

  5. I never designed a bike, but I do work in the aerospace industry so know more than most about aero testing.

    All I am saying is that it’s a waste of time to do aero-testing without the rider on the bike. Yes there will be some marginal gains to be made, but fundamentally the system is incomplete.

    The only way you will be able to quantify the aero performance of a bike is with the rider on it, the reason being that the system will fundamentally be different. It’s like testing a rim by itself, and then a fork by itself and assuming that it will be a good combo.

  6. Rob, totally agreed, but chances are that the pics above are just for promo and not reflective of the actual testing. A rider would distract from the bike.

What do you think?