Aerium (TT)
Origin
Cube was founded in 1993 by Marcus Purner, who started out with a 50 m2 corner of his father's furniture factory in Waldershof, Bavaria, importing frames from the Far East to fund his studies. Three decades on, Cube is one of Europe's largest bike makers, still owner-managed, building thousands of bikes a day from a vast facility in the same Bavarian town. The Aerium is Cube's dedicated aero against-the-clock platform. The rim-brake alloy/carbon Aerium of the early 2010s was a value-focused TT/tri machine; the story turned serious in 2018 when Cube launched the disc-only Aerium TT C:68, raced by the Wanty-Groupe Gobert team at the Tour de France. Moving to disc brakes let Cube clean up and optimise the aero profile around the head tube while staying UCI-legal. In 2022-2023 the platform was reborn as the Aerium C:68X, developed closely with Cube athlete and Ironman World Champion Lucy Charles-Barclay, adding in-frame hydration and further aero refinement.
Specifications
- Frame
- Carbon (C:68X = ~68% carbon / 32% resin), Monocoque Advanced Twin Mold, Twin Head Tube, full internal routing, flat-mount disc, 12x142mm rear
- Weight
- kg
- Drivetrain
- 12-speed, trim-dependent: SRAM Red AXS (SLT) / SRAM Force AXS (SLX) / Shimano Ultegra Di2 with Dura-Ace TT shifters (Race)
- Brakes
- Hydraulic disc, flat-mount (SRAM S-900 Aero HRD or Shimano hydraulic, 160mm rotors)
- Wheels
- Newmen Streem S.60 / TT.80 carbon aero, tubeless-ready (deep-section; SLT/SLX add a rear disc option)
The verdict
- Genuinely fast, wind-tunnel-honed aero frame with real race results behind it (IMWC-winning C:68X).
- Twin Head Tube design keeps it notably stable in crosswinds compared with many deep TT frames.
- Highly adjustable fit and integrated hydration/storage make it a complete, race-ready triathlon package.
- Single-purpose: a steep, aggressive TT/tri geometry that is impractical for general road or endurance riding.
- Top C:68X trims (SLT/SLX) are expensive (well into four figures) and the deep aero wheels punish on climbs.
- Proprietary integrated cockpit and internal routing make setup, travel packing and servicing more involved than a standard road bike.
Generations
Aerium Race (rim, ~2013)
- Older value-focused TT/tri bike; rim brakes, no integration. Predecessor era.
- Frame
- Alloy + carbon fork
- Brakes
- Rim
Aerium TT C:68 (2018)
- First disc-brake, UCI-legal TT frame with Twin Head Tube; raced at Tour de France 2018.
- Frame
- C:68 carbon
- Brakes
- Hydraulic disc
Aerium C:68X (2022/23+)
- Current triathlon-focused generation: in-frame hydration, ~3.63W faster, IMWC-winning. SLT/SLX/Race trims.
- Frame
- C:68X carbon
- Brakes
- Hydraulic disc
Versions & builds
Every official build side by side — differences highlighted.
| Spec | Aerium Race (alloy, rim brake) | Aerium TT C:68 (disc, UCI) | CurrentAerium C:68X Race | CurrentAerium C:68X SLX | CurrentAerium C:68X SLT |
|---|---|---|---|---|---|
| Year | 2013 | 2018 | 2025 | 2025 | 2025 |
| Frame | Hydroformed triple-butted aluminium + carbon fork | C:68 carbon, Twin Head Tube, disc-only | C:68X carbon | C:68X carbon | C:68X carbon |
| Drivetrain | Shimano Ultegra + Dura-Ace TT shifters | Shimano/varies (team builds) | Shimano Ultegra Di2 (Dura-Ace TT shifters) | SRAM Force AXS 12s + power meter | SRAM Red AXS 12s + power meter |
| Brakes | Rim (TRP) | Hydraulic disc | Shimano hydraulic disc | SRAM S-900 Aero HRD disc | SRAM S-900 Aero HRD disc |
| MSRP | €2,100 | — | €6,299 | €8,299 | — |
| Purpose | Value | Flagship | Value | Balanced | Flagship |
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