Compare
Dimond Mogul vs Trek Speed Concept SLR
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 $500 cheaper ($9,500 vs $10,000 for the Dimond Mogul).
- Only the Trek Speed Concept SLR is UCI legal, so only it can be raced in UCI time trials.
- Only the Trek Speed Concept SLR has integrated hydration.
- The Dimond Mogul comes in 5 sizes, the Trek Speed Concept SLR in 4.
Dimond Mogul
Trek Speed Concept SLR
| DimondMogul | TrekSpeed Concept SLR | |
|---|---|---|
| Overview | ||
| Brand | Dimond | Trek |
| Build | Mogul frameset | Speed Concept SLR 9 AXS |
| Build notes | Frameset price with custom paint included. Dimond builds complete bikes to order and quotes them individually; Slowtwitch lists a fully equipped Mogul from $21,905.21. | 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. |
| Price (MSRP) | $10,000$10,000$10,000 | €11,999$14,500£10,750 |
| Model year | 2026 | 2026 |
| Generation | — | 3rd generation (Speed Concept 3.0) |
| Discipline | Triathlon | Triathlon |
| UCI legal | No | Yes |
| Recalls on record | — | 1 |
| Verdict (out of 100) | ||
| Overall score | — | 78 |
| Aero | 80 | 84 |
| Frame | 62 | 86 |
| Components | — | 80 |
| Hydration & storage | 78 | 84 |
| Fit | 60 | 88 |
| Practicality | 58 | 64 |
| Price | — | 63 |
| Frame & fork | ||
| Frame material | Carbon fibre | 800 Series OCLV Carbon |
| Fork material | — | Carbon (SC full foil, integrated brake and stem) |
| Frame weight | 1,800 g3.97 lb | — |
| Weight measured on | 1.8 ± 0.05 kg, size IV (Dimond product page) | — |
| Frame sizes | I, II, III, IV, V | S, M, L, XL |
| Colours | Custom paint included | 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) |
| 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 | Disc (Dimond also offers rim-brake and rim/disc combinations) | Hydraulic disc, flat mount |
| Max rotor size | — | 160 mm |
| Wheel size | 700c | 700c |
| Max tire width | — | 25 mm |
| Bottom bracket standard | PF30 (46 mm diameter x 68 mm wide) | T47 threaded (85.5 mm) |
| Front axle | — | 12x100 thru-axle |
| Rear axle | — | 12x142 thru-axle |
| Drivetrain compatibility | Shimano Di2, SRAM eTap, mechanical (1x only) | Optimised for electronic groupsets only; Trek says mechanical may be possible but does not guarantee smooth cable pull |
| Mechanical shifting possible | Yes | — |
| 1x compatible | Yes | Yes |
| Max chainring | — | 58T |
| Front derailleur mount | — | Braze-on |
| Cable routing | — | 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 | Yes |
| Storage volume | 700 ml23.7 fl oz | — |
| Storage details | Lunch Box bento built into the beam behind the stem: about 700 ml in sizes IV and V and 550 ml in II and III. TOTES (Tools Or Technical Equipment Storage) compartment above the bottom bracket for a tube, levers, CO2 and a small multitool. | Integrated top-tube bento box and integrated downtube flat-kit storage (contents not included). |
| Top tube bento box | Yes | 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 |
| 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) |
| Fit notes | Fixed 79-degree seat angle in every size. Dimond lists a minimum saddle height per size; sizes I and II share the same frame stack and reach. | 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 | ||
| Manufacturer aero claims | Dimond says the Mogul saves 15 W at yaw compared with the Marquise, trading some weight, and that it does especially well in cross-headwinds. | — |
| Testing method | Wind tunnel (Dimond) | — |
| Tube profile | Cantilevered beam frame with no seat tube | KVF (Kammtail Virtual Foil) |
| Travel, maintenance & warranty | ||
| Headset bearings | Cane Creek IS41 (IS41/28.6 upper, IS41/30 lower) | — |
| Maintenance | — | Trek says only authorised dealers should service the IsoSpeed. |
| Proprietary parts | — | Integrated fork/stem/basebar, tower cockpit, seat mast, downtube bottle and cage |
| Frame warranty | Frameset covered against manufacturing defects for 6 years from purchase, original owner only (not transferable); hardware, paint, graphics and Dimond forks for 1 year | — |
| Sold via | Direct from Dimond (custom builds via consultant or 3D configurator) | 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 | I, II, III, IV, V | S, M, L, XL |
| Rider height min | 152–185 cm5′0″–6′1″ | 154–186 cm5–6′1″ |
| Rider height max | 152–190 cm5′0″–6′3″ | 167–198 cm5–6′6″ |
| Stack | 490–585 mm19.3–23″ | 492–565 mm19.4–22.2″ |
| Reach | 390–440 mm15.4–17.3″ | 390–445 mm15.4–17.5″ |
| 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 | 79° | 78° |
| Seat angle max | 79° | 78° |
| Head tube angle | 72.5° | 72.2–72.5° |
| Head tube length | 75–155 mm3–6.1″ | 65–140 mm2.6–5.5″ |
| Effective top tube | — | 495–565 mm19.5–22.2″ |
| Seat tube length | — | 499–574 mm19.6–22.6″ |
| Chainstay | 400 mm15.7″ | 410 mm16.1″ |
| Wheelbase | — | 967–1,047 mm38.1–41.2″ |
| BB drop | 75 mm3″ | 80 mm3.1″ |
| Fork offset | — | 45 mm1.8″ |
| Trail | — | 60–61 mm2.4–2.4″ |
| Front centre | 570–650 mm22.4–25.6″ | — |
| Standover | — | 760–831 mm29.9–32.7″ |
| Saddle height min | 595–785 mm23.4–30.9″ | 559–628 mm22–24.7″ |
| Saddle height max | — | 756–830 mm29.8–32.7″ |
| Wheel size | 700c | 700c |
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).