Stephen’s Tri bike

Stephen’s Tri bike

Professional triathlete Stephen Bayliss approached me about a custom build as he was struggling to get the position he wanted on a stock frame. We went through a few iterations before settling on a design. Stephen decided to go with an aero seatpost instead of an integrated seatmast for ease of traveling with the bike. He asked me to build a custom cockpit to achieve the position he needed.

The headtube is short to keep the basebar low, with a Chris King builders edition Inset headset. The stem/basebar features airfoil tubing and internal cable routing. The aerobar has a central tower that bolts to the stem, and uses 3T extensions and elbow pads, which allow for reach and width adjustment. The internal cable routing enters the frame behind the headtube, with a guide brazed inside to send the cables towards the BB.

For iron-distance storage and nutrition there is a Bontrager draft box behind the seattube, a Torrans bento box on the toptube and a Torrans aero bottle on the downtube. All of which have been painted to match, along with the aero seatpost and fork.


  1. … beautiful!!

  2. Stunning effort Rob. Love the horizontal top tube, shaped chainstays and low front end. Color-coordination pulls it all together too.

    Is that a steel or carbon fork?

  3. Thanks! That is a carbon ‘Wing TT’ fork.

  4. Saw this bike in Lanzarote – which led me to this site. It’s a stunning bike – probably the best looking and most nicely engineered TT bike I’ve ever seen.


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