Description
Trek Speed Concept SLR 9 AXS Triathlon Bike 2025
The Trek Speed Concept SLR 9 AXS is built to dominate on the bike leg, pushing the limits of aerodynamics, integration, and race-ready design. As one of Trek’s flagship triathlon / TT machines, the Trek Speed Concept SLR 9 family blends wind-cheating frame shapes, cutting-edge componentry, and all the features you need to push faster with less effort. With the Trek Speed Concept SLR 9 AXS, you get the absolute top tier of what Trek offers: ultra-light OCLV SLR carbon, SRAM RED eTap AXS wireless shifting, and unmatched integration that reduces drag and improves rider control.
From first pedal stroke, the Trek bikes Speed Concept SLR 9 AXS demands performance. Whether chasing Kona dreams, lining up for a 70.3, or hammering a local time trial, this bike is designed to give you every competitive edge. Utilizing Trek’s Kammtail Virtual Foil (KVF) profiles, a fully integrated cockpit, and disc brakes, the Trek Speed Concept SLR 9 AXS raises the bar for what a modern Trek Speed Concept triathlon bike should be.
The Trek Speed Concept SLR 9 is many things, but above all, it’s fast. It’s the perfect choice for triathlons and time trials where every second counts. Now featuring the new SRAM Red AXS, it offers even greater performance with its advanced 12-speed drivetrain, providing smoother and more precise shifting. Boasting adjustability, integration, customization options, aero wheels, and a cutting-edge drivetrain—all in a super aero design built for flat-out speed.
Key Features
-
OCLV SLR Carbon Frame – Lightweight but stiff, with optimized tube profiles (KVF) to reduce drag in real world yaw conditions. Trek reports ~8.65 kg / 19.07 lbs for the SLR 9 AXS in mid-size builds.
-
Wireless Electronic Shifting – SRAM RED eTap AXS, allowing clean and fast shifting, even when tucked in aero position.
-
Disc Brake Setup – Hydraulic disc brakes provide improved modulation and stopping power in all weather, essential for TT and triathlon courses with descents or wet patches.
-
Integrated Storage & Hydration – Built-in hydration, hidden storage compartments, and stealth cable routing help maintain aero efficiency.
-
Aerofit Cockpit Design – Adjustable cockpit and extensions to dial in the fit based on race distance, body shape, and comfort.
-
Full Project One Customization Available – Color, component, and accessory customization through Trek’s Project One program for riders who want their Speed Concept unique.
Trek Speed Concept SLR 9 Technical Specification
| Frame | 800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, T47 BB, integrated |
| Bottom Bracket | SRAM DUB, T47 threaded, internal bearing |
| Brake Lever Left | SRAM S-900 Aero |
| Brake Lever Right | SRAM S-900 Aero |
| Cassette | SRAM RED XG-1290 E1, 10-33, 12 speed |
| Crank | SRAM RED AXS E1, power meter, 48/35, DUB, 172.5mm length |
| Bento box, integrated downtube storage | |
| Fork | SC full foil carbon, integrated brake & stem |
| Front Derailleur | SRAM RED AXS E1, braze-on |
| Handlebar | Speed Concept mid-rise bar/stem |
| Headset | Trek EcoTack, black |
| Rear Derailleur | SRAM RED AXS E1, 36T max cog |
| Saddle | Bontrager Hilo Pro Carbon |
| Seatpost | Speed Concept SLR, 11.5mm or -20mm offset, tall length |
| Shifter Left | SRAM eTap AXS Wireless Blips, basebar-mounted |
| Shifter Right | SRAM eTap AXS Wireless Blips, basebar-mounted |
| Shifter Set | SRAM eTap Clics, extension-mounted |
| Stem | Speed Concept Cockpit Tower Topper Near |
| Front Tyre | Bontrager R4 320, 700x25mm |
| Rear Tyre | Bontrager R4 320, 700x25mm |
| Front Wheel | Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51mm rim depth, 100x12mm thru axle |
| Rear Wheel | Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51mm rim depth, SRAM XD-R driver, 142x12mm thru axle |
| Chain | SRAM RED E1,12/13 speed |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes purchased, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Performance & Ride Impressions
Riders reviewing the trek speed concept slr 9 note that it delivers exceptional speed in flat TT sections, yet handles crosswinds more stably than many other aero bikes thanks to its KVF shaping. The wireless SRAM AXS shifting helps keep the front profile clean and shifting reliable when tucked in.
Because the Trek Speed Concept project one customization allows fine-tuned fit, many users report being able to stay in aerodynamic positions longer without discomfort. Long-course triathletes benefit from the integrated hydration and grooming of cable routing – less drag, less fuss, and cleaner transitions.
Even in hilly courses, while no pure TT bike climbs like a light XC machine, the stiffness and disc brake power make the Trek Speed Concept SLR 9 AXS surprisingly capable on undulating terrain. Gear spread allows climbing without spinning out, and the braking gives confidence in technical descents.
Fit, Size, and Where It Shines
If you’re considering this bike, note that Trek Speed Concept size chart is essential. Compared to other Trek models, the Speed Concept tends to have aggressive TT/tri geometry, with shorter reach, higher stack options, and shaving weight through integrated features.
Trek Speed Concept SLR 9 AXS shines in:
-
Long distance triathlon (Half Ironman, Ironman)
-
Time trials and triathlons with mixed terrain and exposure
-
Racing where every watt saves seconds—flat or rolling courses
-
Athletes who value integrated systems (hydration, nutrition, tools)
Comparison with Other Trek Speed Concept Models
-
Trek Speed Concept SLR 7: Slightly lower in component spec, lighter or less premium groups, but shares many frame aero advantages. The Trek Speed Concept SLR 9 AXS is the upgrade in shifting, components, and oftentimes wheelset.
-
Trek Speed Concept 7.0: Previous generation, typically with lower spec and less integration. The Trek Speed Concept SLR 9 is the tip top of Trek’s triathlon line.
-
Trek Speed Concept Project One: Means you can customize colors, components—if that matters to you, Project One gives you the ability to make the SLR 9 uniquely yours.
There are no reviews yet.