Aerfast.4

















Super-fast fork
The Aerfast. 4 fork is wide and aggressive. Built close to the wheel for less air turbulence, a narrow head end that minimises the surface area exposed to the airflow and the so-called camtail, the tear-off edge at the rear of the fork, also creates the effect of better airflow characteristics. Thanks to this design, the 80 mm wide fork is super-fast and makes up a large proportion of the watts saved.

Optimised cockpit
The cockpit, a handlebar/stem unit with fully integrated cables, is as fast as an arrow. It has been designed to be significantly more streamlined. The upper handlebar is wider and the front end is significantly narrower. A bulge on the underside provides additional aerodynamics. The drops are also narrower in diameter. This also has the advantage that the upper and lower links are ergonomically shaped and therefore comfortable to grip.

Not just aerodynamically fast
The 4th generation of the Aerfast utilises all the experience of its predecessors. Sporty to ride, thanks to the aero road bike, typical saddle cant, high riding comfort thanks to the pleasant spring stiffness of the seat post and high stiffness for a direct and fast response to every acceleration and on hills. direct and fast response to every acceleration and on hills. It is impossible to ride slowly with this set-up. The bike simply wants to go forwards.

Aerfast.4 Red Edition Special Offer
We are currently offering the Red Edition of the Aerfast.4 Pro with Red AXS 2x12 and our Zeitjaeger Comp Carbon wheels at a special price of €5,999. The Aerfast.4 Pro with this configuration normally costs €7,299.
In addition, we are giving you the DT Swiss P1800 Spline 23 as a training wheelset. These special edition models are already assembled and can be shipped immediately or picked up by you at one of our stores.
Your Aerfast.4
Frame geometry
Frame Size | ST (mm) | TT (mm) | TT EFF (mm) | HT (mm) | CS (mm) | Stack (mm) | Reach (mm) | ST° (degree) | HT° (degree) | Recommended body height (cm) | Crank length (cm) | Handlebar width/stem length (mm) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
XS | 458 | - | 510 | 85 | 410 | 482 | 362.5 | 73 | 70 | 152 - 166 | 170 | 380/90 |
S | 483 | - | 530 | 100 | 410 | 500 | 377 | 73 | 71 | 164 - 172 | 170 | 400/100 |
M | 508 | - | 550 | 115 | 410 | 522 | 390 | 73 | 72 | 170 - 178 | 172,5 | 420/100 |
L | 531 | - | 565 | 130 | 410 | 538 | 400 | 73 | 73 | 176 - 184 | 172,5 | 420/100 |
XL | 558 | - | 575 | 155 | 410 | 562 | 403 | 73 | 73 | 182 - 190 | 175 | 420/110 |
XXL | 583 | - | 595 | 170 | 410 | 576 | 418 | 73 | 73 | 188 - ... | 175 | 440/120 |
- ST: seat tube length • Sitzrohr (mm)
- TT: top tube length • Oberrohr (mm)
- TT EFF: effective top tube length (mm)
- HT: head tube • Steuerrohr (mm)
- CS: chain stay length • Kettenstrebe (mm)
- F: fork rake (mm)
- Stack: vertical length center bottom bracket to center top head tube (mm)
- Reach: horizontal length center bottom bracket to center top head tube (mm)
- ST°: seat tube angle (degree)
- HT°: head tube angle (degree)

Brakes: | SRAM Red Disc 160/160 mm |
---|---|
Cassette: | SRAM Red 12x, 10-33 |
Chain: | SRAM Red |
Crank / chainring: | SRAM Red D1 AXS 48/35 |
Front derailleur: | SRAM Red eTap AXS |
Groupset: | SRAM Red D1 AXS 2x12 |
Handlebar/ stem unit: | RBSU Aerfast.4 |
Handlebar tape: | Storck microfibre black |
Inner bearing: | Pressfit™ diameter 41x86.5mm |
Material: | Carbon Fibre Reinforced (CFR)/Unidirectional (UD) |
Rear derailleur: | SRAM Red D1 eTap AXS 2x12 |
Saddle: | Fizik Vento Argo R5 |
Seat post: | Storck Aerfast.4 Carbon |
Tax rate: | Aerfast.4 |
Tyres: | Continental Grand Prix 5000S TR black/black 28mm |
Frame variant: | Red |
Groupset: | SRAM Red D1 AXS 2x12 |
Size: | XS |
Wheelset: | Storck Zeitjaeger Comp 55R |
Suitable recommendations / frame sets
Frame sets
Accessories
Bottles/holder
Care
Pedals
Safety