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.

I'm not good enough to ride such a fast bike...
Yes, you are good enough! Aerodynamic advantages prevail even at low speeds, right up to the start of the next climb. The aero optimisation is particularly noticeable in crosswinds and tailwinds. When the wind hits the bike, a kind of sailing effect is created and further propulsion is generated. The frame stiffness itself, which is characteristic of an aero road bike, also makes the bike noticeably faster. Anyone who loves the feeling of speed can ride the Aerfast. 4!
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: | Shimano XT Disc 180/160 mm |
---|---|
Cassette: | XT M8100 10-51 12-speed Hyperglide |
Chain: | CN-M8100 HG 12-speed 126G Quick-Link |
Crank / chainring: | Shimano XT M8100 12x, 34T |
Groupset: | Shimano XT M8100 1x12 |
Handle: | Storck |
Handlebar/ stem unit: | e*thirteen Base 35 aluminium riser 800/35 mm |
Material: | Carbon Fibre Reinforced (CFR)/Unidirectional (UD) |
Saddle: | Selle San Marco GND open fit |
Tax rate: | 1 1/8" - 1 1/2" |
Frame variant: | Red |
Groupset: | SRAM Red D1 AXS 1x12 |
Size: | XS |
Wheelset: | DT Swiss P1800 Spline |
Suitable recommendations / frame sets
Frame sets
Accessories
Bottles/holder
Care
Pedals
Safety