trek speed concept size guide

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Trek Speed Concept 9 Series review

Laser-focus on aerodynamic performance

James Huang/Future Publishing

Ben Delaney

The new 9 series Trek Speed Concept is a bitching bike, in two ways. Once built, the bike flies out on the open road with stable steering, great aerodynamics and good looks. But while you (or your mechanic) are building it or working on it, you will be bitching.

• Pros: Excellent aerodynamic performance: fast and stable; range of builds and paint jobs through Project One; add-ons like the trunk add real functionality and claimed aero benefit
• Cons: Adjusting front end for fit tweaks and/or travel is a chore; plastic frame parts feel cheap

Like most of the super bikes these days, the Trek Speed Concept is a purpose-built machine with a complete prioritization on performance above all else. Trek engineers can trot out reams of data on how the aerodynamics are superior to previous iterations, and looking at the svelte front profile and internalization of not only cables but fasteners as well, it’s not a stretch to believe that the bike performs admirably in the wind tunnel.

We tested the bike over a few hundred miles in training and in an Ironman 70.3 , and came away very impressed with the bike. Our only gripes were the challenge of front-end adjustability and the relative sub-par performance of the plastic parts.

Trek sent a test bike with a Campagnolo Record EPS electronic group, but since this bike is available as Project One custom builds, we will focus on what is unique to the bike, plus the wheels.

There is so little frontal area Trek can barely fit any logos

Frame: Refined for 0-12.5 degree yaw, lightened by nearly a pound

To tweak the original Speed Concept, Trek engineers studied real-world wind conditions on Ironman courses , and settled on optimizing the bike for yaw angles between zero and 12.5 degrees. (They found 3-5 degree average yaw in Arizona, up to a 13 degree average yaw in the notoriously windy Kona worlds course.)

By slimming the front profile and tweaking the Kamm tail tubing, the 2014 version is substantially faster and lighter than its predecessor, Trek claims. For our purposes, we were only going on feel, not wind tunnel data, and in our experience, the bike handled very well in all wind conditions. With a head tube angle of 72.5 degrees on the three larger sizes, and a seat tube angle of 80 degrees across all sizes, the Speed Concept was never nervous or twitchy, even with the 90mm-deep Aeolus 9 D3 wheels in blustery sidewinds. For sure, you can feel side pressure from the wind, but the handling is always predicable and manageable. We were comfortable riding in the aero extensions through fast corners and down windswept hills.

Bottom bracket area stiffness isn't so much of a concern on such a bike, but the bike does accelerate with some snap, perhaps due to the relatively short but robust chainstays, enormous bottom bracket area and huge down tube. The low bottom bracket (8cm drop) contributes to stability.

Comfort on the frame is good. We swapped out the stock saddle for a firmer option, and were still comfortable for two- and three-hour efforts on the bike.

Total bike weight for our Large sample was 19.18lb. While Trek declined to quote a frame weight, its engineers say the frameset, cockpit setup, headset, BB and small frame parts come out to 1,874g, which they claim is less than comparable measurements on a Cannondale SliceRS, a Specialized Shiv Tri or a Cervélo P5-6.

Trek Speed Concept 2014 focused on 0-12.5 degree yaw

Modular front end: For engineers, aerodynamics trumped convenience

Granted, this bike is way out on the pointy end of aero performance, and machines with such low-drag front ends have until recently been custom creations for the world's best pros. So we appreciate the challenge in building a stock bike that has both a superior aero shape and the ability to adjust to fit a range of riders. Trek's solution is a modular front end, with a collection of stem heights/lengths and riser blocks. From there, one of four monocoque extension bars mounts atop the riser block of choice, and the pads are mounted via a collection of bolts and mount options. Should you have your measurements dialed ahead of time, Trek provides a worksheet that will get your fit close, specifying which stem and riser block to use.

The modular front end consists of various-sized stems and riser blocks, as well as the base bar, extensions and arm rests

Also, should you purchase such a machine, your local Trek mechanic will do the heavy lifting on dialing in all of the various modular components for you. And if you never travel with the bike, you're golden. But should you travel by air or rail and have to pack the bike, or should you even want to lower the bars by 1cm for a shorter-distance event, you will wish you had three hands for the dis- and reassembly.

All that said, there is a great range of vertical, fore/aft and width adjustment on most of the touch points relative to other super bikes; it just requires some time and often some part-swapping to execute.

Electric systems are far easier to cram into fully integrated front ends than cabled systems, but adjustments still aren't easy

Trek has improved the cockpit options somewhat for 2014. You can tilt the extensions with the adjustment of three bolts, which is nice. But the base bar remains dead level. This is best for aerodynamics, of course, but we would have preferred a slight upward angle on the outer handles for a bit more grip security.

And while there are four styles of extensions to choose from — S-bend, straight, ergo and short ergo — none allow width or angle adjustment as they are one-piece designs. Whether it's another price paid for aerodynamics or perhaps just simplicity in construction, it's certainly something to keep in mind. We used the ergo bar and found that while the bend angle was comfortable, we missed the rotational adjustment you can get on most aftermarket bars.

Knee clearance when out of the saddle was not an issue with the bar - as it sometimes is with TT/tri machines with large aero basebars.

Other components: Seatpost is super user friendly, but plastic parts aren’t the same caliber as the rest of the bike

The Speed Concept's spring-loaded seatpost clamp is a thing of beauty. It's just... easy. One 5mm bolt at the front for final tightness combines with a finger-operated dial at the rear for angle adjustment. A spring pushes the top plate up when loosening the bolts, and unlike many seatposts, there aren't loose parts to fall out when you swap saddles. If only all seatposts were this easy. Kudos, Trek.

The plastic parts are a bit disappointing. The front brake fairing - while it does offer little holes for pad holder adjustment on either side - did not sit perfectly flush with the fork on our test bike. For a bike of this cost, that's not cool. Also, while we love the functionality and general design of the Draft Box, the lid attachment feels chintzy, relying on the elasticity of plastic latches to lock it into place. The one time we crammed the Box to capacity, it popped open when we hit hard bumps like railroad tracks. When not jam-packed, the lid stays shut, but the connection mechanism definitely has room for improvement.

The new, wider Draft Box fits all your flat-fixing essentials and then some

Trek sells the Speed Concept as a frameset and in a variety of bike builds. While we won't go into the Campagnolo EPS Record group here, it is worth noting that the Bontrager Aelous 9 D3 carbon clincher wheels were flawless throughout the testing. Having carbon clinchers on this bike makes good sense to us as there's no reason you can't race and train on the same wheelset. Yes, your buddies and perhaps total strangers will make fun of you for training on super-deep carbon hoops, but this is much better than training on shallow wheels then jumping on deep wheels for race day and freaking out every time the wind blows because you are unaccustomed to the feel. And besides, if you're going to spend this much on a bike, why not rock the hot wheels every day?

Bottom line: The 2014 Trek Speed Concept is a highly specialized machine within an already specialized category of bicycles. Working on it is not easy, but it does seem to live up to Trek's promises of a very fast, very functional machine for solo efforts — and with custom paint options, to boot.

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Trek Speed Concept 7.0 review

Designed to be an integrated, aero system – but is it all systems go, or is there a spanner in the works?

Jamie Beach

Trek Speed Concept 7.0 triathlon bike review

The Speed Concept 7.0 may look like a bike but it’s really more of a system – a system to transport air smoothly over its surfaces, while transporting you, your fuel and your spares smoothly to T2.

>>> Best triathlon bikes of 2014

You could say that of any bike, though, as they all fit the definition of system: a selection of parts assembled to form a mechanism that performs a particular task. But very few of them use parts that are as integrated as those on the Trek Speed Concept.

Sure, some bikes have a frame and fork that are built to work together and others might even amalgamate the brakes into the design. But Trek has gone further and incorporated the storage options, brakes, brake booster and even quick releases to help the Speed Concept perform its task.

The headset provides a rock-solid platform for cornering and has a number of storage options on the heads tube

First of all, there’s the frame. It’s constructed from Trek’s 500-Series OCLV carbon fibre made into Kamm-tailed tubes for the main triangle. The flat-backed, ‘truncated-teardrop’ profile not only makes for stiffer tubes than those using the full aerofoil shape, it also means the tubes are just as aerodynamic but less susceptible to the will of crosswinds.

Airflow around the head tube is smoothed out by its Kamm-tailed trailing edge but also by the fork’s prow that sits in front of it to provide even more of a fairing. Built into the top of the fork is a centre-pull brake, while the bottom is shaped so the quick-release lever can sit flush with it.

The rear brake is positioned behind the bottom bracket shell and is covered by Trek's Speedfin for aero gains

Similar consideration has been paid to the frame and attachments at the rear end. The seat and chainstays meet at a dropout that’s shaped to blend with the quick-release lever on the non-driveside and provide an exit port for the internally-routed rear-mech cable on the other. The rear brake is not only hidden behind the bottom bracket shell, it’s also shrouded by Trek’s Speedfin – a fairing that acts as a brake booster as well as smoothing out the airflow.

Storage options and computer sensors are also integrated into the Speed Concept (although sold separately). A mount for a Duotrap sensor is built into the non-driveside chainstay while mounts on the top tube and behind the seat tube allow you to add aerodynamically optimised tool and fuel carriers. In the 7.0 configuration, the Speed Concept also comes with Bontrager bars, a Vision saddle and a Shimano 105 drivetrain.

Carbon forks complete the aero set-up, although the wheels would be the first thing to upgrade

The wheels supplied are from Bontrager – Trek’s in-house component brand – and they’re fairly standard shallow, alloy training wheels, performing with no issues or thrills on standard training rides. The benefit of the training rims is that they keep the price down in comparison to coming supplied with deep-rim race wheels (especially if you’ve already got your own) but, if you haven’t got a set of race hoops stashed in the garage, these will be the first things you’ll want to upgrade if you’re serious about increasing race-day speed.

A lot to carry

You get a lot of bike with the Speed Concept 7.0. Not just in terms of all the aerodynamic shaping and integration but also in terms of weight. It tips the 220 scales at 9kg, which is exactly the same as the £2.5k Specialized Shiv Elite tested recently , but the Trek feels heavier when you’re riding it than that other major player.

Once it’s going, the Speed Concept is fine but getting it going takes quite a bit of coercion. It’s not one of those bikes that springs into action; rather accelerating it is a noticeable labour. And although the Speed Concept’s weight helps somewhat when you’re cruising on the flat, you can feel gravity taking its toll on the hills – the speed bleeds out of it.

It’s a shame because in other respects the Speed Concept handles well. It’s a rock-solid platform that corners with confidence and has the stiffness needed to let you push all your effort into it knowing that none of it’s getting lost in flex. The only trouble is the weight that makes it so stiff also makes it so difficult to shift.

The integrated brakes are good, especially the boosted back brake. Often integrated brakes can be a little lacking in stopping power, especially on tri/TT bikes, but not in this case. The Speed Concept has plenty of stopping power – and frankly, given the momentum you can build up with the weight it’s carrying, it needs it.

There are no worries on the comfort and adjustability front with plenty of scope for shifting the bars and saddle back and forth, in and out, and up and down to get them in the right places before you ride. And even though stiffness was a priority for the Speed Concept, it’s not been engineered in at the cost of its comfort while you’re riding.

The Speed Concept 7.0 has plenty going for it. But it’s in a very competitive price bracket and its weight is holding it back. Granted it’s not significantly heavier than many of its rivals, but it feels like it is out on the road. And that’s when all it’s carrying is a rider and a 500ml bottle. So you can imagine what it’s like when it’s loaded down with the full complement of storage options, integrated or not.

Verdict: Potentially a great bike but in this guise it’s buried under what feels like a lot of extra weight, 69%

Contact : www.trekbikes.com

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Trek Speed Concept SLR 7 Extended Review

Trek’s third generation speed concept tri bike has sleek lines, tons of storage, a low weight, and suspension. yes, suspension., review rating, 19 pounds, 12 ounces.

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It’s been a while since Trek released their last version of the well-loved Speed Concept tri/TT bike. By my count, something like eight years since a serious revision—but maybe even more depending on your definition of “serious revision.” We’ve seen hints and glimpses and weird theories about the third generation Speed Concept (based on spy photos, we dubbed it the Speed Cncpt at one point). Visually, the new Speed Concept isn’t jarringly different than the last model, but there’s a lot more to this version than meets the eye.

Trek Speed Concept Gen 3: The Basics

Though we tested the SLR 7 Ultegra 12-speed build of this new Gen 3 Speed Concept, the features on each of the four flavors (SLR 9, 9 eTap, 7eTap, and 7) are similar—save for wheels, drivetrain, and a few other bits like saddles. The frames/forks/bars are the same. According to Trek, the big news about this redesign is the fact that the new version is six minutes or 16 watts at 26mph (roughly Kona-winning pace) faster than the previous version. But there’s way more to it than that.

First, this is Trek’s first Speed Concept with disc brakes—a trend that is unavoidable in today’s high-end road bike market. For years Trek fans were left behind when it came to a tri bike that would take advantage of the super wide rims, greater selection, and the even lower prices that disc-brake wheels brought. Finally, you don’t have to choose Trek or disc.

Next, we’re seeing a big redesign on the Trek’s front end. Notably Trek has ditched the monopost riser that ironically a few competing brands have recently adopted ( Orbea , for instance) and swapped it out for a dual-riser system with a very clean-looking—but also more flexible—fork/stem interface. No more cone/bayonet/brake cowl situation.

And while we’ll dig into the features in more detail just below, it’s worth noting that while Trek is playing catch-up with some of their features, they’re forging a new path with their IsoSpeed suspension system. While beam bikes can rightfully claim a level of suspension in their designs, IsoSpeed—which Trek has offered for years on other lines—is the first built-in suspension in a traditional double-diamond frame. The idea being that the suspension will lessen vibration from the road into the rider without sacrificing handling or stand-up response. Less vibration means less fatigue, which not only helps on the bike, but sometimes even more so on the run.

Trek Speed Concept Gen 3: The Features

There’s a lot going on with the new generation of Speed Concepts, so we’re going to break down the features on this bike below—in order from most effective to least—but leave our impressions until the following section.

Our size medium SLR 7 with Ultegra and midrange Bontrager carbon wheels weighed in just under the all-important 20-pound mark. While many triathletes might rightfully say that weight doesn’t matter much on a tri bike, there’s something to be said for how efficient this design is, and if the wind tunnel numbers are right, Trek did a great job of playing by the UCI rules, making things increasingly more aero, making a shockingly responsive ride, and doing it all without excess materials ( Scott Plasma 6 , I’m looking at you…). This is a tight bike with a low weight that comes as a result.

Aerodynamics

Trek claims this cuts 16 minutes off an Ironman time or saves 16 watts at 26mph. While most triathletes aren’t averaging 26mph for 112 miles (in fact, almost none are…), improvements are improvements. I’d love to see this setup against other bikes in this weight class like the new Quintana Roo V-PR , Scott Plasma 6, Orbea Ordu, or everyone’s favorite double-diamond benchmark, the Cervelo P5.

Disc Brakes

While it’s hard to argue that increased stopping power isn’t a good thing, there’s a lot more to the addition of disc brakes than that. Finally Speed Concept owners can use a greater selection of wider, faster, and oftentimes cheaper disc wheels. They also don’t have to deal with insane brake calipers and aero cowlings. In the latest Speed Concept, Trek also said it’s added discs without adding weight (a tough thing to do).

Hydration, Storage

Though Trek still hasn’t cracked the code on fully frame-integrated hydration like Scott or Canyon, their downtube hydration system is sleek and basically useful.

Their attachable between-the-bars system also looks about par for the course (we weren’t able to try it, however), and the integrated top tube storage actually went above and beyond what you normally see from a built-in bento box. (Removable dividers for organization helped manage the spacious cavity.)

Finally, we really really liked the built-in tool/flat storage that was tucked neatly beneath the downtube water bottle—in many ways it kind of looked like something Canyon would do.

Suspension System

Trek’s IsoSpeed suspension system helps reduce vibration heading up from the road into the rider. Trek claims it increases compliance by 30%—which seems like a lot—by using an internal pivot system specifically placed to help with nose-riding triathletes. With reduced vibration, triathletes will have more energy to ride and run (especially if using a disc or deep-dish set of wheels). In practice, results were a bit of a mixed bag—hence this feature’s ranking on the list of features. Read on for our impressions.

Trek Speed Concept Gen 3: The Good

Oddly enough, there’s a lot that’s really exciting on this bike that Trek chose not to highlight for some reason. There’s a lot of talk about the increased aerodynamics (which are great, but hardly perceptible when riding under 26mph not in a wind tunnel) and the suspension system, but not a lot of mention about the way the bike handles, its road feel, its handling, or its weight (which is quite low for tri standards). Trek does highlight excellent storage—which the Speed Concept does very elegantly—and their wide range of easily adjustable fit options across four sizes. Those are highlights worth noting because the new Speed Concept is worthy of praise in those arenas for sure.

But the most interesting things we found while riding the new Speed Concept are slightly more imperceptible and in many ways rarer than things like storage and fit options. Not since Cervelo’s new P5—a bike that many brands flat-out use as a benchmark to compare their latest bikes to—have we had such a snappy, lively, and intuitive-handling bike. We’ll get to the vibration damping on this bike below, but the Speed Concept has a high level of road feel, accelerates quickly when standing or powering over rollers in the aerobars, and cuts corners very very well. Much like the similarly UCI-legal P5. Because the design is tight and well-thought-out, the Speed Concept feels completely connected to the rider—right out of the box. While it might not hold straight lines like the new V-PR in a screaming downhill aero tuck, it moves aggressively around obstacles and corners without earning the “twitchy” label.

Also much like the P5, the Speed Concept travels very well, as you only need to loosen a few bolts to bring the front end off and pack it up. All compartments and coverings are similarly well-integrated without a bevy of tiny bolts to potentially strip and/or get lost. Here, Trek clearly spent a lot of time in their design iterations to make sure things on the user side were simple, all while giving plenty of features that triathletes expect from a near-$10k bike.

Trek Speed Concept Gen 3: The OK

There are a few little nit-picky things on the Speed Concept that you only typically bring up if the rest of the bike is really really good. So we’ll start there. First, the saddle that comes with the SLR 7 version is shockingly hard and shockingly wide. This might work for some triathletes, but others will likely need an immediate swap.

Next, while there is a lot of fit flexibility in the four sizes that Trek offers, the seat angle can’t get as steep as some triathletes might want (if so, look to Canyon or Quintana Roo to get really steep). Also, like many (but not all) integrated front ends that are super cool, you can’t change out the aerobar extensions for a different style without changing the whole bar system—the Speed Concept’s  unusual (but easily adjustable) aerobar shape ensures this. Finally, in the nit-picky section, we were surprised that Trek sold this with midrange 51mm carbon wheels on the front and rear. I would hope to either knock $1K off the price and go with basic trainers or add a few bucks and give this rig a proper deep rear/mid-depth front.

The last thing we were surprised by was how not-smooth the ride was over low- and mid-frequency road vibrations. Given that Trek probably put a lot of time and effort into their IsoSpeed system—which worked like a charm over high-frequency road chatter—the ride was much rougher than I would have thought. That’s not to say the new Speed Concept is a rough-riding bike in the grand scheme of things, but there are at least three other new bikes off the top of my head with a smoother ride at this price range and no suspension system. Of course none of those bikes have the handling and acceleration of the Speed Concept either—so there’s a give and take, of course.

Trek Speed Concept Gen 3: Conclusions

I wasn’t sure what to expect when I first got on top of this new Speed Concept. I had always liked the old version in the way that it was predictable but unremarkable. It wasn’t a bike that would get you excited to go out and ride, but it also did it’s job just fine. The third generation of this bike seems to have gotten the “excitement” variable right. This is a fun bike. Sure it’s not as tri-specific as some of the other brands we’ve mentioned here—ones with in-frame hydration and all sorts of other non-UCI-legal goodies—but there’s something to be said for a simple, no-frills design with key features that works very very well.

I think this is (finally) a very big upgrade to the Speed Concept line that might serve as a marker to other brands for a new benchmark. For years, I’ve even used the P5 as something to measure other tri bikes against—particularly when it comes to weight, handling, and acceleration (because of course I don’t have a wind tunnel). This could replace that. I like how easy it is to work on this bike, travel with it, and adjust it. I like the way this bike feels when I ride it, and I know everything on it will stay on it and stay quiet as I add more miles onto its odometer. Not every bike at this price can say that, and with the latest version of the Speed Concept, Trek has made some big, necessary, and exciting improvements that’ll stick for years and years, until the next update.

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Results have arrived, trek speed concept bikes for sale.

Shop new & used Trek Speed Concept bikes at TPC - The Pro's Closet. Find reviews, specs, weight info, and prices on various models (SLR 7, SLR9) and popular years (2016, 2017 etc). Read our 2022 Trek Speed Concept SLR 7 Quick-Take Review below.

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Trek Speed Concept SLR 9 - Weight, Specs, Price

2022 trek speed concept slr 7 review - a tpc rider's quick take, by owen h.

• Top-tier Aerodynamics - The Speed Concept SLR 7's aerodynamics are second to none. Trek claims the new 2023 Speed Concept is 6 minutes faster at the Kona than the last generation bike.
• The bike's aggressive geometry and design elements aim to minimize wind resistance at every opportunity. The integrated cockpit and sleek Kammtail Virtual Foil tube shaping create an aerodynamic profile that slices through the air.
• Exceptional Power Transfer - The bottom bracket of the Speed Concept SLR 7 is stiffer than many other TT bikes I've ridden. This stiffness makes for exceptional power transfer. Every watt you pump into the pedals feels like it's directly propelling you forward. No energy wasted.
• Fit Customization Options - One of the surprising aspects is the bike's adjustable fit. Triathlon bikes often sacrifice customization for the sake of aerodynamics, but Trek has managed to offer both with its Speed Concept. The integrated cockpit and seatpost provide a range of adjustment options that cater to a broad spectrum of riders.
• Premium Price Tag - The Speed Concept SLR 7 doesn't come cheap. The advanced aerodynamic features and high-end components contribute to a price tag that could give the budget-conscious cyclist a moment of hesitation. ($10,199)
• Not Versatile - This is a bike built for a purpose - it's a time-trial machine. If you're looking for a bike for group rides, casual spins, or any form of off-road or mixed-terrain cycling, this probably isn't the bike for you.
• Complex Maintenance - With all its integrated systems and internal cabling, the Speed Concept SLR 7 can be a pain to work on. Regular maintenance and any necessary repairs might require a trip to a professional mechanic more often than not.

• Rider Notes

2021 Trek Speed Concept

A carbon frame triathlon bike with ultra high-end components and rim brakes.

Manufacturer Price

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A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Speed Concept

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Aug 2022 · VeloNews.com

The recall relates to the cockpit on each model, which Trek will replace for free.

Read Review

May 2022 · Jim Cotton

Van Dijk's track adapted Trek Speed Concept will be put to the ultimate test of endurance Monday.

Last updated May 11

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Trek Speed Concept TT Frameset

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Size / SM, MD, LG

At a glance

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Specifications

• Frame 800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, T47 BB
• Fork SC full foil carbon, integrated brake & stem
• Bottom Bracket T47, threaded

Q: How much is a 2023 Trek Speed Concept TT Frameset?

A 2023 Trek Speed Concept TT Frameset is typically priced around $4,999 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: Where to buy a 2023 Trek Speed Concept TT Frameset?

The 2023 Trek Speed Concept TT Frameset may be purchased directly from Trek .

Q: What size 2023 Trek Speed Concept TT Frameset should I get?

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