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HydrationStorage
Trek · model family
Trek Speed Concept
2 variants by frame grade and discipline version. Compare them part by part below.
- From
- €6,799$5,500£6,200
- Lightest
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- 1/3
Generations
What changed from one generation to the next. Useful when you're weighing a used bike against a new one.
2021-11
Speed Concept SLR (3rd generation)
- First disc-brake Speed Concept
- Speed Box replaced by storage inside the top tube and down tube
- Dual armrest pedestals replace the 2014 mono-pedestal
- Wider top and down tubes; chainstays 1 cm longer, with clearance for 28-30 mm tyres
- Stack and reach unchanged (541/426 mm in size L)
- Trek claims 16 W less drag than the 2014 model, about 6 minutes over the Kona course
2013-07
Speed Concept (2014)
- Deeper frame at the top-tube/seat-tube junction and the seat tube moved closer to the rear wheel
- One-piece aerobar that slides fore-aft and tilts by loosening two bolts
- Speed Fin rear brake fairing on the triathlon version
- Two forks: a UCI-compliant 3:1 fork and a 6:1 triathlon fork that is not UCI legal
- New storage and hydration accessories: larger Draft Box, Speed Box bento and 2-Pack Aero bottles
2009-07
Speed Concept
- Kammtail Virtual Foil (truncated airfoil) tube shapes
- Proprietary integrated centre-pull brakes
- Raced in time trials at the 2009 Tour de France before going on sale
- Bontrager basebar and seatpost on the 9.9 exceed the UCI 3:1 ratio, so that build is not UCI legal as tested
Variants side by side
Each variant is shown with its first complete build. Pick other builds on the compare page.
| SLR (3rd gen) | TT (3rd gen) | |
|---|---|---|
| Overview | ||
| Brand | Trek | Trek |
| Build | Speed Concept SLR 9 AXS | Speed Concept TT Frameset |
| Build notes | New listing (product 86500) replacing the earlier SLR 9 AXS (35756), now with SRAM Red AXS E1. The ICON Northern Lights paint costs $16,499.99 / £12,950 / €14,399. Trek's spec also lists Aeolus RSL 65X wheels; its summary spec gives Aeolus RSL 51. GBP and EUR from trekbikes.com/gb and /de. | GBP price from trekbikes.com/gb and EUR price from trekbikes.com/de. Trek says the size-specific seatpost and cockpit parts are sold separately with Speed Concept framesets. |
| Price (MSRP) | €11,999$14,500£10,750 | €6,799$5,500£6,200 |
| Model year | 2026 | 2026 |
| Generation | 3rd generation (Speed Concept 3.0) | 3rd generation (Speed Concept 3.0) |
| Discipline | Triathlon | Time trial |
| UCI legal | Yes | Yes |
| Recalls on record | 1 | — |
| Verdict (out of 100) | ||
| Overall score | 78 | — |
| Aero | 84 | 82 |
| Frame | 86 | 86 |
| Components | 80 | — |
| Hydration & storage | 84 | 42 |
| Fit | 88 | 66 |
| Practicality | 64 | 60 |
| Price | 63 | — |
| Frame & fork | ||
| Frame material | 800 Series OCLV Carbon | 800 Series OCLV Carbon |
| Fork material | Carbon (SC full foil, integrated brake and stem) | Carbon (Speed Concept full foil, integrated brake and stem) |
| Max system weight | — | 125 kg275.6 lb |
| Frame sizes | S, M, L, XL | S, M, L |
| Colours | Matte Deep Smoke, Party Purple and Serpentine (SLR 9 AXS, SLR 9, SLR 7 AXS, SLR 7); ICON Northern Lights (SLR 9 AXS); Metallic Red Smoke to Carbon Red Smoke Fade (SLR 7, US); Hex Blue/Trek Black (SLR 7, UK); Deep Smoke/Gloss Trek Black (frameset) | Deep Smoke/Gloss Trek Black |
| Also available as | Speed Concept SLR TT frameset (no bento box, flat kit or IsoSpeed, slightly more aggressive handling geometry) | Speed Concept SLR triathlon frame (storage, IsoSpeed, 78-degree seat angle, sizes S to XL) |
| UCI frame approval | UCI-approved as 'MY22 Speed Concept SLR' (frame and fork code TREK-062), approved 28.01.2021, sizes S to XL (4) (UCI list version 2026.10.02) | UCI-approved as 'MY22 Speed Concept TT' (frame and fork code TREK-061), approved 28.01.2021, sizes S to L (3). The list also has a separate 'Speed Concept TT' entry (TREK-070) approved 12.05.2023 for size 58 only (UCI list version 2026.10.02) |
| Compatibility & standards | ||
| Brake type | Hydraulic disc, flat mount | Hydraulic disc |
| Max rotor size | 160 mm | 160 mm |
| Wheel size | 700c | 700c |
| Max tire width | 25 mm | 25 mm |
| Bottom bracket standard | T47 threaded (85.5 mm) | — |
| Front axle | 12x100 thru-axle | — |
| Rear axle | 12x142 thru-axle | — |
| Drivetrain compatibility | Optimised for electronic groupsets only; Trek says mechanical may be possible but does not guarantee smooth cable pull | — |
| 1x compatible | Yes | — |
| Max chainring | 58T | 58T |
| Front derailleur mount | Braze-on | — |
| Cable routing | Internal | Internal |
| Electronic battery location | Inside the seatpost (battery mount assembly) | — |
| Hydration & storage | ||
| Integrated hydration | Yes | — |
| Hydration details | Aero downtube bottle with frame-specific cage included; a between-the-arms bottle is not included. | — |
| Integrated storage | Yes | — |
| Storage details | Integrated top-tube bento box and integrated downtube flat-kit storage (contents not included). | — |
| Top tube bento box | Yes | — |
| Bottle mount locations | Downtube (aero bottle) | — |
| Fit & adjustability | ||
| Aerobar system | Integrated Speed Concept cockpit: base towers, tower toppers and low/mid/high-rise basebars | Integrated Speed Concept cockpit; size-specific cockpit parts are sold separately with the frameset |
| Pad stack adjustment range | Back-of-pad stack from 537.9 mm (S, low basebar) to 746 mm (XL, high basebar), depending on basebar rise and towers | — |
| Pad reach adjustment range | Back-of-pad reach from 310.5 mm (S, near topper) to 530.1 mm (XL, far topper) | — |
| Seatpost type | Speed Concept SLR seat mast with 11.5 mm or -20 mm offset head | — |
| Effective seat angle range | 78° (nominal) | 76° (nominal) |
| Fit notes | Trek publishes a fit assistance chart listing pad stack and reach for each size with near/mid/far tower toppers and low/mid/high-rise basebars. Some low/near combinations can make the pads hit the top tube. | — |
| Aerodynamics | ||
| Tube profile | KVF (Kammtail Virtual Foil) | KVF (Kammtail Virtual Foil) |
| Travel, maintenance & warranty | ||
| Maintenance | Trek says only authorised dealers should service the IsoSpeed. | — |
| Proprietary parts | Integrated fork/stem/basebar, tower cockpit, seat mast, downtube bottle and cage | Integrated fork/stem, cockpit parts and seatpost (size-specific, sold separately) |
| Sold via | Trek retailers and trekbikes.com | Trek retailers and trekbikes.com |
| Drivetrain | ||
| Groupset | SRAM Red AXS E1 | — |
| Launched | 2024 · current generation | — |
| Speeds | 12-speed | — |
| Electronic | Yes | — |
| Wireless | Yes | — |
| Drivetrain | 2x | — |
| Shifters | SRAM AXS Wireless Blips | — |
| Position | Extension and basebar | — |
| Crankset | SRAM Red AXS E1 Power Meter | — |
| Chainrings | 48/35 | — |
| Crank length | 160 (S) / 165 (M, L) / 170 (M, L, XL) as listed by Trek | — |
| Power meter | SRAM Red AXS E1 Power Meter | — |
| Launched | 2024 · current generation | — |
| Type | Integrated in crankset | — |
| Bottom bracket | SRAM DUB T47 | — |
| Standard | T47 threaded, internal bearing | — |
| Front derailleur | SRAM Red AXS E1 | — |
| Rear derailleur | SRAM Red AXS E1 | — |
| Max cog | 36T | — |
| Cassette | SRAM Red XG-1290 E1 | — |
| Range | 10-33 | — |
| Speeds | 12-speed | — |
| Chain | SRAM Red E1 | — |
| Brakes | ||
| Brake levers | SRAM Red Aero | — |
| Rotors | SRAM Paceline X | — |
| Front rotor | 160 mm | — |
| Rear rotor | 160 mm | — |
| Mount | Center Lock | — |
| Wheels & tires | ||
| Wheelset | Bontrager Aeolus RSL 51 | — |
| Front rim depth | 51 mm | — |
| Rear rim depth | 51 mm | — |
| Rear disc wheel | No | — |
| Material | Carbon | — |
| Tubeless ready | Yes | — |
| Tires | Bontrager R4 320 | — |
| Tire width | 25 mm | — |
| Cockpit | ||
| Aerobar system | Trek Speed Concept cockpit (base towers + tower toppers) | — |
| Integrated with frame | Yes | — |
| Pad stack adjustment | Base towers 30/45/60 mm by size; low, mid or high-rise basebar | — |
| Notes | Near, mid or far tower topper sets pad reach | — |
| Basebar | Trek Speed Concept mid-rise bar/stem (integrated) | — |
| Headset | FSA Integrated, sealed cartridge bearing, 1-1/8 in top, 1.5 in bottom | — |
| Saddle & seatpost | ||
| Saddle | Bontrager Hilo Pro Carbon | — |
| Seatpost | Trek Speed Concept SLR | — |
| Offset / setback | 11.5 mm or -20 mm | — |
| Notes | Short length on S, tall on M-XL | — |
| Included extras | ||
| Bottle cages | Trek Speed Concept Downtube Bottle Cage + Downtube Bottle | — |
| Geometry (smallest – largest size) | ||
| Sizes | S, M, L, XL | S, M, L |
| Rider height min | 154–186 cm5–6′1″ | 154–175 cm5′1″–5′9″ |
| Rider height max | 167–198 cm5–6′6″ | 167–186 cm5′6″–6′1″ |
| Stack | 492–565 mm19.4–22.2″ | 484–533 mm19.1–21″ |
| Reach | 390–445 mm15.4–17.5″ | 398–434 mm15.7–17.1″ |
| Pad stack min | 537.9–610.5 mm21.2–24″ | — |
| Pad stack max | 674.3–746 mm26.5–29.4″ | — |
| Pad reach min | 310.5–363.1 mm12.2–14.3″ | — |
| Pad reach max | 477.5–530.1 mm18.8–20.9″ | — |
| Seat angle min | 78° | 76° |
| Seat angle max | 78° | 76° |
| Head tube angle | 72.2–72.5° | 72° |
| Head tube length | 65–140 mm2.6–5.5″ | 65–115 mm2.6–4.5″ |
| Effective top tube | 495–565 mm19.5–22.2″ | 518–566 mm20.4–22.3″ |
| Seat tube length | 499–574 mm19.6–22.6″ | 499–549 mm19.6–21.6″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 967–1,047 mm38.1–41.2″ | 982–1,034 mm38.7–40.7″ |
| BB drop | 80 mm3.1″ | 72 mm2.8″ |
| Fork offset | 45 mm1.8″ | 45 mm1.8″ |
| Trail | 60–61 mm2.4–2.4″ | 63 mm2.5″ |
| Standover | 760–831 mm29.9–32.7″ | 751–800 mm29.6–31.5″ |
| Saddle height min | 559–628 mm22–24.7″ | 559–604 mm22–23.8″ |
| Saddle height max | 756–830 mm29.8–32.7″ | 756–805 mm29.8–31.7″ |
| Wheel size | 700c | 700c |
Geometry overlay
Drawn to scale (how to read it).