There’s certainly no shortage of carbon fiber in this area.
Cable routing is still fully internal with lines entering the frame through a proprietary upper headset cover, though, and down below is a slightly tweaked version of the T47 oversized threaded bottom bracket standard. In addition to the different fiber blend, Trek reduces costs further by using a standard stem and headset on the Madone SL as compared to the more heavily integrated two-piece carbon fiber cockpit on the Madone SLR. As a result, that seatmast can pivot rearward on rough roads far more than appearances would suggest, with the lower section of that “L” acting as a leaf spring.Įven better, a hidden slider between the base of that “L” and the top tube also allows you to fine-tune the spring rate to your liking. While clever surfacing suggests the seatmast is all molded together with the rest of the frame, it’s actually an L-shaped piece with the base extending underneath the top tube, and an aluminum axle and two cartridge bearings at the seat cluster. Up top is the same ace-in-the-hole found on the Madone SLR, too: Trek’s incredibly effective Adjustable Top Tube IsoSpeed “decoupler”. Although it’s hardly new at this point, the Trek Madone is still apparently one of the most aerodynamic options on the market. The deep-profile Kammtail truncated airfoil cross-sections are present and accounted for, there’s the same ultra-sleek seat cluster treatment with that no-cut integrated seatmast, an identical hourglass-profile head tube, and the same aggressively shaped fork blades. Indeed, if you were comparing on the design alone, the Madone SL is a literal carbon copy of the SLR. For riders that are chasing every last watt of drag - but are on more modest budgets - Trek introduced two years ago the Madone SL collection, which uses the exact same shaping, but with a less-fancy carbon fiber blend that shrinks the price tag at the expense of an additional 240 g or so of weight. Trek’s Madone SLR flagship aero road bike is undeniably fast and efficient when it comes to slicing through the air, but the significant amount of complication that goes into its design also results in a lot of cost. Highs: Superb aerodynamics, comfy ride, excellent handling, accommodating cockpit design, threaded bottom bracket.Weight:8.59 kg (18.94 lb), 52 cm, without pedals or accessories.Frame features:OCLV 500 carbon fiber construction, truncated airfoil tube shaping, Adjustable Top Tube IsoSpeed “decoupler”, almost fully internal cable routing, T47 threaded bottom bracket, built-in chain watcher.What it is:Trek’s second-tier aero road bike, built with a more affordable carbon blend and less integration than the flagship version.
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