When the chips are down, and you're in the biggest event of the season, you want a bike that won't hold you back.
The Trek Speed Concept was built to dominate different disciplines, not just a Tour de France prologue or the Kona coast. Trek brought its finest engineers and computing power together to make the Speed Concept slice through the wind better than anything built today. The Speed Concept's main purpose is to keep aerodynamic drag as low as possible while still complying with the UCI's frame shape regulations for time trial bicycles. The Speed Concept's aerodynamic Kammtail shape was proven back in the 70's at Le Mans, when long-tail racing cars needed to cope with dangerous crosswinds at over 200mph. The truncated trailing edge of the Speed Concept's frame fools the air, keeping drag numbers low without the extra weight of a full airfoil cross-section that is tossed around in crosswinds. Trek used Computational Fluid Dynamic software to dial in the exact Kammtail shape for light weight and torsional strength, not just a clever aerodynamic profile. When the Speed Concept prototype went into the wind tunnel, it confirmed to Trek that it could be useful for any athlete racing alone against the watch. When pedaling, the turbulence created by the rider's legs can be a major drag problem that can negate all the work done by the engineers. When the "fill-ins" around the seat tube/top tube juncture and bottom bracket were added, there was a major drag reduction compared to the last generation of the Speed Concept.
The Speed Concept's Kammtail Virtual Foil (or KVF) frame shape isn't the only thing that Trek can brag about; the OCLV carbon fiber material makes the bike incredibly light for such a refined aero machine. Trek uses their 500 Series OCLV carbon fiber to not only make the Speed Concept lightweight and strong, but also enhance the ride quality by using different layering to take the edge off rough pavement. A harsh-riding bike will tire a triathlete prematurely, and a time trial racer might make mistakes in the closing miles when seconds count. Internal cable routing through the aerobars and stem give the Speed Concept the cleanest profile of any TT/Tri bike in the industry. All that might lead a rider to belive its a hard bike to fit, but Trek offers plenty of sizes in integrated direct-mount stems and aero bar mounts. From an aggressive "prologue" TT fit, to a more upright Ironman fit for the less flexible among us, the Speed Concept can accommodate more riders with a wider range of flexibilities.
The details found on the Speed Concept add to the bike's excellent aerodynamic performance. Hidden brake calipers and internal brake cables reduce drag around the upper half of the frame, while a reverseable aero seat post helps with a wide range of fit positions. An aperture in the left chainstay allows the installation of a DuoTrap speed/cadence sensor (sold separately) without the use of clumsy zip-ties. Mounts for a Draft Box accessory box at the back of the seat tube keep a repair kit and tubes tucked out of the wind, while similar mounts for a gel-storing Speed Box on the top tube keep the bike's aero profile equally preserved.
The components on the Speed Concept needed to be able to keep up with the cutting-edge frameset, so Trek chose Shimano's 8000-series Ultegra component group. Many of the improvements are obvious, such as the Shadow-format rear derailleur that hides out of the wind better than most rear mechs. The flatter profile of the 50/34T compact Ultegra crankset helps improve aero numbers, and yet torsional rigidity is increased over the previous generation. Even the front derailleur requires less hand strength to operate. The front derailleur's steel cage adds to the shift response and is much more durable than aluminum. An 11-28T 11-speed Ultegra cassette boasts a wide gearing range for roller-coaster courses. Shimano Dura-Ace bar-end shifters bring fingertip operation to the Speed Concept as well. Bontrager's Race Lite aero levers help cut through the air with a low-profile shape and feel better in the hands than aero-focused sharp-edged levers.
Rolling stock consists of Bontrager Aeolus Comp TLR wheels and Bontrager R2 700x25c Hard-Case Lite tires, delivering an aero advantage at speed. The wheels are tubeless-ready, and feature a tall 50mm profile. A Bontrager Hilo tri-specific saddle is designed to be comfortable for riders in an especially aerodynamic posture.
|Frame||500 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, BB90 w/Speed Fin, DuoTrap compatible, SC Draft Box 2 & SC Speed Box compatible|
|Fork||SC full foil carbon fiber, integrated brake & stem|
|Headset||Integrated, sealed bearings|
|Rims/Wheels||Bontrager Aeolus Comp Tubeless Ready, rim brake|
|Hubs||Bontrager sealed cartridge|
|Spokes||Stainless steel bladed|
|Tires||Bontrager R2 Hard-Case Lite, 700x25c|
|Crankset||Shimano Ultegra HollowTech|
|Bottom Bracket||BB90 press-fit|
|Chain||Shimano Ultegra 11-speed|
|Front Derailleur||Shimano Ultegra, braze-on|
|Rear Derailleur||Shimano Ultegra, short cage|
|Cassette/Rear Cogs||Shimano Ultegra, 11-28T, 11 speed|
|Shifters||Shimano Dura-Ace bar end, 11 speed|
|Handlebars||Bontrager Speed Concept KVF aero bar, carbon fiber, direct mount, UCI legal|
|Stem||Bontrager Speed Concept, direct mount|
|Brake Levers||Bontrager Race lite aero levers|
|Brakes||Bontrager Speed Limit integrated|
|Saddle||Bontrager Hilo Comp, chromoly rails|
|Seat Post||Bontrager Speed Concept Race Lite, alloy, +/-20mm offset|
* Subject to change without notice.