The Boonen Prototype


In 2007, when Specialized began sponsoring the Quick Step team, company representatives showed up at a winter training camp for the team with bikes for each and every rider. In the case of some riders, they actually showed up with two bikes if the size of their previous Time bike didn’t translate exactly to the Specialized bike.


In Tom Boonen’s case, the company came equipped with both a 58 and a 61 Tarmac. The 61 had the top tube length Boonen needed, but the head tube, he determined was too long. He couldn’t achieve the more than 10cm drop from the saddle to the handlebar with the 61; the bar was just too high. So Specialized left him with the 58cm frame and made a custom stem for him at their Morgan Hill fabrication shop. While no one has said exactly how long the stem was, indications are it was 15cm in length.


The season started … and so did Boonen’s back troubles. The PR fallout for Specialized didn’t seem too bad, unless you searched the message boards, and on those they were being murdered. Ditto for the talk on group rides.

With Boonen’s results suffering Specialized undertook a radical solution; working from the fit measurements of his previous Time, they recreated his fit exactly by building him a custom Tarmac and later a custom Roubaix from aluminum.


And yet the criticism of Specialized continued. Riders wondered why they weren’t building custom carbon bikes for Boonen. In fact, they were, but they wanted to make sure he was happy with the fit before they spent in excess of $25k cutting a mold. Those who have watched “This Old House” are familiar with the maxim, “Measure twice, cut once.”

As fate would have it, Boonen’s bike is just enough of a tweener size that the company has considered adding it to their size range.


The bike pictured here is the prototype Roubaix built for the three-time winner. While I haven’t heard definitively, I suspect Columbus Airplane (not Starship) tubing was used, given the bike’s weight and stiffness.

It’s a big bike by any standard. The top tube is 59cm on horizontal. The stem is 14cm and the bar is 44cm (center-to-center); both are aluminum. Reach from the nose of the saddle to the center of the stem is a whopping 63cm thanks to the 10.5cm drop from the saddle to the bar. And it is unmistakably a Roubaix thanks to the 42.5cm chainstays and the 60cm front-center. Saddle height is 80cm and his crank length is 177.5mm, naturally. With 25mm tubulars, the bottom bracket height would have been 27cm.


There’s a ding in the top tube from a hit and scratches along the left side of the downtube, signs of battle damage from the Hell of the North. Since it’s creation the bike has been with either Quick Step or Specialized; this is its first trip away from the Specialized HQ since coming back to the states. One other curious detail, as per the request of some team riders, this bike uses a Time fork painted to match rather than the Roubaix fork.

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