Storck Aerfast.4 Comp

2025 RoadAero Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €3,999 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 34–50t / 11–34t
Gear range: 455%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 152–166
SM 164–172
MD 170–178
LG 176–184
XL 182–190
XXL 188+

Components

11 of 11 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Drivetrain

5 parts

Cassette
- Shimano 105
Chain
- Shimano 105
Crankset
- Shimano 105 50/34t
Rear derailleur
- Shimano 105 RD-R7150 12 speeds
RD-R7150
Shifters
- Shimano 105

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

2 parts

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Geometry diagram unavailable

The drawing needs wheelbase and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	362.5	377	390	400	403	418
Stackmm	482	500	522	538	562	576
Top tube lengthmm	510	530	550	565	575	595
Seat tube lengthmm	458	483	508	531	558	583
Head tube lengthmm	85	100	115	130	155	170
Head tube angle	70°	71°	72°	73°	73°	73°
Seat tube angle	73°	73°	73°	73°	73°	73°
Chainstay lengthmm	410	410	410	410	410	410
Stack/reach ratio	1.33	1.33	1.34	1.35	1.40	1.38
Suspension and parts
Stem lengthmm	—	40	—	—	—	—

Not published by the manufacturer: Wheelbase, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 29.0 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Tire width: 28c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

29.0 gear inches

This value is within the central range for this class.

Cohort: Road / Aero Model year: 2025
Sample: 334 bicycles with this information
Coverage: 78.7% of the class

Highest gear

131.8 gear inches

This value is below the central range for this class.

Cohort: Road / Aero Model year: 2025
Sample: 334 bicycles with this information
Coverage: 78.7% of the class

Shifting

Electronic

331 of 419 bicycles with this information use electronic shifting.

Cohort: Road / Aero Model year: 2025
Sample: 419 bicycles with this information
Coverage: 98.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 50.5 km/h

Total gear range 455%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 29.0–131.8 gear inches
Class reference (p10–p90): 28.2–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Aero Model year: 2025
Lowest gear: 334 bicycles with this information, 78.7% of the class
Highest gear: 334 bicycles with this information, 78.7% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle Storck Aerfast.4 Comp	Storck Aerfast.4 Comp Disc 105 Di2 2x12	Storck Aerfast.4 Comp Disc Force D1 AXS 2x12	Storck Aerfast.4 Comp Disc Quarq Rival D1 AXS 2x12	Storck Aerfast.4 Comp Disc Ultegra Di2 2x12	Storck Aerfast.4 Platinum
Frame
Bicycle weight	Not informed	8.3 kg	8.3 kg	8.3 kg	8.3 kg	Not informed
Drivetrain
Smallest chainring	34	34	35	33	36	34
Largest chainring	50	50	48	46	52	50
Smallest sprocket	11	11	10	10	11	11
Largest sprocket	34	34	36	30	30	34
Lowest gear	29.0 in	29.0 in	28.2 in	31.9 in	34.8 in	29.0 in
Highest gear	131.8 in	131.8 in	139.2 in	133.4 in	137.1 in	131.8 in
Other specifications
Tire width	28c	Not informed	Not informed	Not informed	Not informed	28c
Wheel material	Aluminum	Carbon	Carbon	Carbon	Carbon	Carbon
Bottom bracket standard	Not informed	BB86/BB92	BB86/BB92	BB86/BB92	BB86/BB92	Not informed