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Dimond Mogul 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 Ventum One Disc starts $310 cheaper ($9,690 vs $10,000 for the Dimond Mogul).
- Only the Ventum One Disc has integrated hydration.
- The Dimond Mogul comes in 5 sizes, the Ventum One Disc in 6.
Dimond Mogul
Ventum One Disc
| DimondMogul | VentumOne Disc | |
|---|---|---|
| Overview | ||
| Brand | Dimond | Ventum |
| Build | Mogul frameset | One Disc Dura-Ace Di2 |
| 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. | The manufacturer lists crank lengths for S to XL only. Ventum sets up carbon-wheel builds tubeless. |
| Price (MSRP) | $10,000$10,000$10,000 | $9,690$9,690$9,690 |
| Model year | 2026 | 2022 |
| Generation | — | 2nd generation (disc brake) |
| Discipline | Triathlon | Triathlon |
| UCI legal | No | No |
| Verdict (out of 100) | ||
| Overall score | — | 77 |
| Aero | 80 | 78 |
| Frame | 62 | 68 |
| Components | — | 86 |
| Hydration & storage | 78 | 90 |
| Fit | 60 | 80 |
| Practicality | 58 | 72 |
| Price | — | 62 |
| Frame & fork | ||
| Frame material | Carbon fibre | Carbon |
| Fork material | — | Carbon, tapered steerer |
| 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 | XS, S, M, M/L, L, XL |
| Colours | Custom paint included | White, Black |
| Compatibility & standards | ||
| Brake type | Disc (Dimond also offers rim-brake and rim/disc combinations) | Disc, flat mount |
| Wheel size | 700c | 700c |
| Max tire width | — | 28 mm |
| Bottom bracket standard | PF30 (46 mm diameter x 68 mm wide) | PF30 |
| Front axle | — | Thru-axle |
| Rear axle | — | Thru-axle |
| Drivetrain compatibility | Shimano Di2, SRAM eTap, mechanical (1x only) | Electronic (Shimano Di2 and SRAM eTap AXS builds offered) |
| Mechanical shifting possible | Yes | — |
| 1x compatible | Yes | — |
| Cable routing | — | Internal; brake hoses run through the frame and fork |
| Hydration & storage | ||
| Integrated hydration | — | Yes |
| Hydration volume | — | 1,400 ml47.3 fl oz |
| Hydration details | — | 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 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. | Storage compartment under the hydration reservoir. |
| Top tube bento box | Yes | — |
| Fit & adjustability | ||
| Aerobar system | — | Ventum One Disc aerobar system (basebar, extensions and arm pads included with the bike) |
| Pad stack adjustment range | — | Telescoping monoriser for pad height; mast tilt adjustable |
| Seatpost type | — | Ventum carbon post, 0° offset; minimum insertion 10 cm |
| 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. | 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 | ||
| 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 | — |
| 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 | Cane Creek IS41 (IS41/28.6 upper, IS41/30 lower) | 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 | — | 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 | — | Hydration reservoir, aerobar system and seatpost are specific to the One Disc |
| 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 | Limited lifetime warranty on frame, fork and seatpost for the original owner |
| Sold via | Direct from Dimond (custom builds via consultant or 3D configurator) | Direct to consumer |
| Drivetrain | ||
| Groupset | — | Shimano Dura-Ace Di2 R9200 |
| Launched | — | 2021 · current generation |
| Speeds | — | 12-speed |
| Electronic | — | Yes |
| Drivetrain | — | 2x |
| Shifters | — | Shimano Dura-Ace Di2 TT shift switch + TT/triathlon dual control lever |
| Position | — | Extensions and base bar |
| Crankset | — | Shimano Dura-Ace |
| Chainrings | — | 52/36 |
| Crank length | — | 165 (S, M) / 170 (L, XL) |
| Bottom bracket | — | Wheels Manufacturing PF30 |
| Standard | — | PF30 |
| Front derailleur | — | Shimano Dura-Ace Di2 |
| Rear derailleur | — | Shimano Dura-Ace Di2 |
| Cassette | — | Shimano Dura-Ace R9200 |
| Range | — | 11-30 |
| Speeds | — | 12-speed |
| Chain | — | Shimano Dura-Ace |
| Brakes | ||
| Brake calipers | — | Shimano Dura-Ace hydraulic disc |
| Type | — | Hydraulic disc |
| Rotors | — | Shimano Dura-Ace Center Lock |
| Front rotor | — | 160 mm |
| Rear rotor | — | 140 mm |
| Mount | — | Center Lock |
| Wheels & tires | ||
| Wheelset | — | Zipp 808 Firecrest |
| Front rim depth | — | 80 mm |
| Rear rim depth | — | 80 mm |
| Rear disc wheel | — | No |
| Internal rim width | — | 23 mm |
| Material | — | Carbon |
| Tubeless ready | — | Yes |
| Rim bead | — | Hookless |
| Notes | — | Shimano HG freehub |
| Tires | — | Schwalbe One Performance RaceGuard |
| Tire width | — | 28 mm |
| Set up tubeless | — | Yes |
| Type | — | Tubeless |
| Cockpit | ||
| Aerobar system | — | Ventum One Disc Aerobar System |
| Pad stack adjustment | — | Telescoping monoriser |
| Tilt adjustment | — | Mast tilt |
| Saddle & seatpost | ||
| Saddle | — | Fizik Aeris SD R5 |
| Saddle width | — | 135 mm |
| Seatpost | — | Ventum Carbon seatpost |
| Offset / setback | — | 0° |
| Material | — | Carbon |
| Included extras | ||
| Hydration system | — | Ventum One Disc Hydration System |
| Volume | — | 1,400 ml47.3 fl oz |
| Geometry (smallest – largest size) | ||
| Sizes | I, II, III, IV, V | XS, S, M, M/L, L, XL |
| Rider height min | 152–185 cm5′0″–6′1″ | — |
| Rider height max | 152–190 cm5′0″–6′3″ | — |
| Stack | 490–585 mm19.3–23″ | 499–564 mm19.6–22.2″ |
| Reach | 390–440 mm15.4–17.3″ | 380–437 mm15–17.2″ |
| Seat angle min | 79° | 82° |
| Seat angle max | 79° | 82° |
| Head tube angle | 72.5° | 72.5–72.6° |
| Head tube length | 75–155 mm3–6.1″ | 82–152 mm3.2–6″ |
| Effective top tube | — | 451–518 mm17.8–20.4″ |
| Chainstay | 400 mm15.7″ | 399 mm15.7″ |
| Wheelbase | — | 951–1,030 mm37.4–40.6″ |
| BB drop | 75 mm3″ | 75–76 mm3–3″ |
| Front centre | 570–650 mm22.4–25.6″ | 565–643 mm22.2–25.3″ |
| Saddle height min | 595–785 mm23.4–30.9″ | — |
| 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).