Trek Speed Concept SLR 8 AXS Triathlon Bike 2025
If you’re a triathlete who demands top performance, the Speed Concept SLR 8 AXS is the tri bike that meets your needs. Designed for those who leave it all on the course, this Trek delivers blazing-fast aero speed and precision shifting with its SRAM RED wireless electronic drivetrain. The integrated accessories, including hydration and fuel storage, ensure you stay in your aero position, making refueling simple and stress-free.
Built with an ultra-lightweight 800 Series OCLV Carbon frame and drag-reducing Kammtail Virtual Foil (KVF) tube shaping, the Speed Concept SLR 8 AXS offers advanced aerodynamics and comfort. It features a Speed Concept full foil carbon fork, road-smoothing IsoSpeed, and Bontrager Aeolus Pro 51 OCLV Carbon wheels for unmatched performance. With the SRAM RED AXS 12-speed drivetrain, AXS Blips shifters, and a power meter, this bike is engineered for speed and efficiency, helping you achieve your fastest bike splits and setting you up for a successful run. Fully customizable through Project One, this bike allows you to choose your model, paint, and parts to create the perfect triathlon machine.
Technical Specification
| Frame | 800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, T47 BB, integrated Bento box, integrated downtube storage |
| Fork | SC full foil carbon, integrated brake & stem |
| Weight | M - 9.05 kg / 19.96 lbs |
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 125 kg (275 lb). |
| Battery | SRAM eTap battery pack (with charger) |
| Shifter | SRAM eTap AXS Wireless Blips |
| Front derailleur | SRAM RED eTap AXS, braze-on |
| Rear derailleur | SRAM RED eTap AXS, 36T max cog |
| Crank | SRAM RED AXS, power meter, 48/35, DUB |
| Bottom bracket | SRAM DUB, T47 threaded, internal bearing |
| Cassette | SRAM XG-1290, 10-33, 12-speed |
| Chain | SRAM RED D1, 12-speed |
| Max. chainring size | 1x 58T, 2x 55/44 |
| Wheel front | Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 100x12 mm thru axle |
| Wheel rear | Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, Shimano 11/12-speed freehub, 142x12 mm thru axle |
| Skewer front | Bontrager Switch thru-axle, removable lever |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Tyre | Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 mm |
| Max tyre size | 28 mm rear, 25 mm front |
| Saddle | Bontrager Hilo Comp, hollow chromoly rails |
| Seatpost | Speed Concept SLR |
| Handlebar part | Speed Concept |
| Handlebar/stem (integrated) | Speed Concept mid-rise bar/stem |
| Brake rotor | SRAM CentreLine X, CentreLock, round edge, 160 mm |
| Brake lever | SRAM S-900 Aero |
| Rotor size | Max brake rotor sizes 160 mm front & rear |
| Cage | Speed Concept Downtube Bottle Cage |
| Bottle | Speed Concept Downtube Bottle |
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 collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
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.
Trek Speed Concept SLR 8 AXS Triathlon Bike 2025 Sizing
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