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Trek Speed Concept SLR vs Ventum One Disc
Pick up to 4 bikes. Rows line up component by component. Highlighted rows differ, and green marks the best value where lower or higher is clearly better.
Key differences
- The Trek Speed Concept SLR starts $190 cheaper ($9,500 vs $9,690 for the Ventum One Disc).
- Our verdict scores the Trek Speed Concept SLR higher overall: 78/100 vs 77/100.
- Only the Trek Speed Concept SLR is UCI legal, so only it can be raced in UCI time trials.
- Tire clearance: up to 25 mm on the Trek Speed Concept SLR vs 28 mm on the Ventum One Disc.
- The Trek Speed Concept SLR comes in 4 sizes, the Ventum One Disc in 6.
Trek Speed Concept SLR
Ventum One Disc
| TrekSpeed Concept SLR | VentumOne Disc | |
|---|---|---|
| Overview | ||
| Brand | Trek | Ventum |
| Build | Speed Concept SLR 9 AXS | One Disc Dura-Ace Di2 |
| 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. | The manufacturer lists crank lengths for S to XL only. Ventum sets up carbon-wheel builds tubeless. |
| Price (MSRP) | €11,999$14,500£10,750 | $9,690$9,690$9,690 |
| Model year | 2026 | 2022 |
| Generation | 3rd generation (Speed Concept 3.0) | 2nd generation (disc brake) |
| Discipline | Triathlon | Triathlon |
| UCI legal | Yes | No |
| Recalls on record | 1 | — |
| Verdict (out of 100) | ||
| Overall score | 78 | 77 |
| Aero | 84 | 78 |
| Frame | 86 | 68 |
| Components | 80 | 86 |
| Hydration & storage | 84 | 90 |
| Fit | 88 | 80 |
| Practicality | 64 | 72 |
| Price | 63 | 62 |
| Frame & fork | ||
| Frame material | 800 Series OCLV Carbon | Carbon |
| Fork material | Carbon (SC full foil, integrated brake and stem) | Carbon, tapered steerer |
| Frame sizes | S, M, L, XL | XS, S, M, M/L, L, XL |
| 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) | White, Black |
| Also available as | Speed Concept SLR TT frameset (no bento box, flat kit or IsoSpeed, slightly more aggressive handling geometry) | — |
| 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) | — |
| Compatibility & standards | ||
| Brake type | Hydraulic disc, flat mount | Disc, flat mount |
| Max rotor size | 160 mm | — |
| Wheel size | 700c | 700c |
| Max tire width | 25 mm | 28 mm |
| Bottom bracket standard | T47 threaded (85.5 mm) | PF30 |
| Front axle | 12x100 thru-axle | Thru-axle |
| Rear axle | 12x142 thru-axle | Thru-axle |
| Drivetrain compatibility | Optimised for electronic groupsets only; Trek says mechanical may be possible but does not guarantee smooth cable pull | Electronic (Shimano Di2 and SRAM eTap AXS builds offered) |
| 1x compatible | Yes | — |
| Max chainring | 58T | — |
| Front derailleur mount | Braze-on | — |
| Cable routing | Internal | Internal; brake hoses run through the frame and fork |
| Electronic battery location | Inside the seatpost (battery mount assembly) | — |
| Hydration & storage | ||
| Integrated hydration | Yes | Yes |
| Hydration volume | — | 1,400 ml47.3 fl oz |
| Hydration details | Aero downtube bottle with frame-specific cage included; a between-the-arms bottle is not included. | Removable reservoir inside the frame, in the space a down tube would normally take: 1.4 L on sizes S to XL, 1.2 L on XS. Ventum says it is removable and easy to clean. |
| Integrated storage | Yes | Yes |
| Storage details | Integrated top-tube bento box and integrated downtube flat-kit storage (contents not included). | Storage compartment under the hydration reservoir. |
| 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 | Ventum One Disc aerobar system (basebar, extensions and arm pads included with the bike) |
| 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 | Telescoping monoriser for pad height; mast tilt adjustable |
| 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 | Ventum carbon post, 0° offset; minimum insertion 10 cm |
| Effective seat angle range | 78° (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. | Arm-pad height is set by sliding the monoriser mast and the pads can be tilted. Slowtwitch reports dozens of pre-drilled pad mounting positions. |
| Aerodynamics | ||
| Tube profile | KVF (Kammtail Virtual Foil) | — |
| Travel, maintenance & warranty | ||
| Travel & packing | — | Ventum ships bikes about 98% assembled in a custom box within the continental US; elsewhere about 85% assembled, with the stem also to be fitted. Slowtwitch packed the bike into a standard bike box without disconnecting the hydraulic brakes. |
| Headset bearings | — | 40 x 52 x 7 mm, 45°x45° bearings (shared with the GS1 and NS1) |
| Derailleur hanger | — | Proprietary: Ventum rear derailleur hanger (same part as the 2020-2022 GS1) |
| Maintenance | Trek says only authorised dealers should service the IsoSpeed. | The Di2 junction or SRAM Blipbox sits in the nose cone at the front of the cockpit. If externally clamped brake levers such as TRP HD-T910 are used, Ventum advises trimming 3 cm off each end of the basebar and fitting the alloy reinforcement inserts. |
| Proprietary parts | Integrated fork/stem/basebar, tower cockpit, seat mast, downtube bottle and cage | Hydration reservoir, aerobar system and seatpost are specific to the One Disc |
| Frame warranty | — | Limited lifetime warranty on frame, fork and seatpost for the original owner |
| Sold via | Trek retailers and trekbikes.com | Direct to consumer |
| Drivetrain | ||
| Groupset | SRAM Red AXS E1 | Shimano Dura-Ace Di2 R9200 |
| Launched | 2024 · current generation | 2021 · current generation |
| Speeds | 12-speed | 12-speed |
| Electronic | Yes | Yes |
| Wireless | Yes | — |
| Drivetrain | 2x | 2x |
| Shifters | SRAM AXS Wireless Blips | Shimano Dura-Ace Di2 TT shift switch + TT/triathlon dual control lever |
| Position | Extension and basebar | Extensions and base bar |
| Crankset | SRAM Red AXS E1 Power Meter | Shimano Dura-Ace |
| Chainrings | 48/35 | 52/36 |
| Crank length | 160 (S) / 165 (M, L) / 170 (M, L, XL) as listed by Trek | 165 (S, M) / 170 (L, XL) |
| Power meter | SRAM Red AXS E1 Power Meter | — |
| Launched | 2024 · current generation | — |
| Type | Integrated in crankset | — |
| Bottom bracket | SRAM DUB T47 | Wheels Manufacturing PF30 |
| Standard | T47 threaded, internal bearing | PF30 |
| Front derailleur | SRAM Red AXS E1 | Shimano Dura-Ace Di2 |
| Rear derailleur | SRAM Red AXS E1 | Shimano Dura-Ace Di2 |
| Max cog | 36T | — |
| Cassette | SRAM Red XG-1290 E1 | Shimano Dura-Ace R9200 |
| Range | 10-33 | 11-30 |
| Speeds | 12-speed | 12-speed |
| Chain | SRAM Red E1 | Shimano Dura-Ace |
| Brakes | ||
| Brake levers | SRAM Red Aero | — |
| Brake calipers | — | Shimano Dura-Ace hydraulic disc |
| Type | — | Hydraulic disc |
| Rotors | SRAM Paceline X | Shimano Dura-Ace Center Lock |
| Front rotor | 160 mm | 160 mm |
| Rear rotor | 160 mm | 140 mm |
| Mount | Center Lock | Center Lock |
| Wheels & tires | ||
| Wheelset | Bontrager Aeolus RSL 51 | Zipp 808 Firecrest |
| Front rim depth | 51 mm | 80 mm |
| Rear rim depth | 51 mm | 80 mm |
| Rear disc wheel | No | No |
| Internal rim width | — | 23 mm |
| Material | Carbon | Carbon |
| Tubeless ready | Yes | Yes |
| Rim bead | — | Hookless |
| Notes | — | Shimano HG freehub |
| Tires | Bontrager R4 320 | Schwalbe One Performance RaceGuard |
| Tire width | 25 mm | 28 mm |
| Set up tubeless | — | Yes |
| Type | — | Tubeless |
| Cockpit | ||
| Aerobar system | Trek Speed Concept cockpit (base towers + tower toppers) | Ventum One Disc Aerobar System |
| Integrated with frame | Yes | — |
| Pad stack adjustment | Base towers 30/45/60 mm by size; low, mid or high-rise basebar | Telescoping monoriser |
| Tilt adjustment | — | Mast tilt |
| 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 | Fizik Aeris SD R5 |
| Saddle width | — | 135 mm |
| Seatpost | Trek Speed Concept SLR | Ventum Carbon seatpost |
| Offset / setback | 11.5 mm or -20 mm | 0° |
| Material | — | Carbon |
| Notes | Short length on S, tall on M-XL | — |
| Included extras | ||
| Hydration system | — | Ventum One Disc Hydration System |
| Volume | — | 1,400 ml47.3 fl oz |
| Bottle cages | Trek Speed Concept Downtube Bottle Cage + Downtube Bottle | — |
| Geometry (smallest – largest size) | ||
| Sizes | S, M, L, XL | XS, S, M, M/L, L, XL |
| Rider height min | 154–186 cm5–6′1″ | — |
| Rider height max | 167–198 cm5–6′6″ | — |
| Stack | 492–565 mm19.4–22.2″ | 499–564 mm19.6–22.2″ |
| Reach | 390–445 mm15.4–17.5″ | 380–437 mm15–17.2″ |
| 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° | 82° |
| Seat angle max | 78° | 82° |
| Head tube angle | 72.2–72.5° | 72.5–72.6° |
| Head tube length | 65–140 mm2.6–5.5″ | 82–152 mm3.2–6″ |
| Effective top tube | 495–565 mm19.5–22.2″ | 451–518 mm17.8–20.4″ |
| Seat tube length | 499–574 mm19.6–22.6″ | — |
| Chainstay | 410 mm16.1″ | 399 mm15.7″ |
| Wheelbase | 967–1,047 mm38.1–41.2″ | 951–1,030 mm37.4–40.6″ |
| BB drop | 80 mm3.1″ | 75–76 mm3–3″ |
| Fork offset | 45 mm1.8″ | — |
| Trail | 60–61 mm2.4–2.4″ | — |
| Front centre | — | 565–643 mm22.2–25.3″ |
| Standover | 760–831 mm29.9–32.7″ | — |
| Saddle height min | 559–628 mm22–24.7″ | — |
| Saddle height max | 756–830 mm29.8–32.7″ | — |
| Wheel size | 700c | — |
| Crank length | — | 165–170 mm6.5–6.7″ |
Geometry overlay
Pick a size for each bike to see frames and arm-pad ranges on top of each other.
Drawn to scale (how to read it).