Pro bike: Tejay van Garderen’s BMC TM01 timemachine

USA Pro Challenge race leader on custom 3T aero bars

Tejay van Garderen set out on the uphill time trial of the USA Pro Challenge in the yellow leader’s skinsuit, aboard a BMC TM01 timemachine with a custom 3T aero bar and new team-only Continental tubulars. Although not exceptionally light at 18.98lb (9.06kg), van Garderen’s timemachine was chosen for its aerodynamic advantage.

With about 1,500ft of climbing in the 10mi/16.1km time trial, some riders opted for road bikes with aero bars, but all the GC contenders rode full TT rigs.

Tejay van Garderen's custom 3T integrated aero bar, with Di2 modification

Van Garderen ran a standard 53/39 ring setup on his SRM Dura-Ace cranks, with an 11-25 cassette in the rear.He matched a Shimano C50 front wheel with a Lightweight disc, which BMC mechanics have painted over and polished to a mirror-like finish. On the front, a 24mm Continental tubular marked 'Force Comp' shared the same tread as the unmarked 22mm rear. 

Chief team mechanic Ian Sherburne explained that the tires are pro-team only, with a perfectly smooth center tread for ultimate speed matched with file tread shoulders for cornering grip. When BMC riders use a rear PRO disc, which has a wider tire bed, mechanics mount a 24mm or 25mm tire to match.

BMC uses team-only Continental tubulars with a smooth center tread and file tread shoulders

But the most remarkable piece of van Garderen’s timemachine is the custom-molded aero bar, which integrates not only the bars and stem but the bayonet fork itself.

The Shimano Di2 wiring is molded into the aero bar, which is drilled for a zip-tie connection for the wiring harness.

You won't find this configuration on a stock BMC

Van Garderen’s resulting position is not insanely low by pro standards, but his extensions are quite narrow. The arm rest pads are 14cm apart (c-to-c) and the extensions are only 5cm apart at the tips.

Click through the photo gallery, above right, for all the details. And be sure to check out Cyclingnews for complete coverage of the USA Pro Challenge.

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