Colnago A1-R 105

2019 RoadRace

Last known price: $1,649

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 34–50t / 11–28t
Gear range: 374%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

40cm
43cm
46cm
49cm
52cm
55cm
58cm

The manufacturer did not publish rider heights for these sizes.

Components

15 of 18 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.

Frame and fork

1 part

Frame

Aluminum Not identified

Suspension

1 part

Fork
- Colnago

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano CS-5800
CS-5800
Chain
- Shimano CN-HG601
CN-HG601
Crankset
- Shimano FC-5800 50/34t
FC-5800
Front derailleur
- Shimano 105 FD-5800
FD-5800
Rear derailleur
- Shimano 105 RD-5800
RD-5800
Shifters
- Shimano ST-5800
ST-5800

Brakes

1 part

Brakes
- Colnago

Wheels and tires

2 parts

Rims

Artemis 24 Not identified
Tires
- Continental Ultra Sport

Cockpit and contact points

6 parts

Sizes and geometry

7 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 49cm

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 Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	366	371	378	385	392	399	406
Stackmm	512	510	530	550	570	590	610
Top tube lengthmm	500	504	523	543	561	581	596
Seat tube lengthmm	400	527	550	572	595	617	639
Head tube lengthmm	122	116	132	151	170	188	207
Head tube angle	70.5°	70.8°	71.3°	71.6°	71.9°	72.5°	73.1°
Seat tube angle	75.4°	75.4°	74.7°	74°	73.5°	72.8°	72.7°
Chainstay lengthmm	405	405	405	405	407	410	413
Stack/reach ratio	1.40	1.38	1.40	1.43	1.45	1.48	1.50

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 length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

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

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 28
Lowest gear: 35.2 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 25c
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

35.2 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2019
Sample: 504 bicycles with this information
Coverage: 83.8% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2019
Sample: 504 bicycles with this information
Coverage: 83.8% of the class

Shifting

Mechanical

282 of 601 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2019
Sample: 601 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 50.5 km/h

Total gear range 374%

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: 35.2–131.8 gear inches
Class reference (p10–p90): 30.8–137.1 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2019
Lowest gear: 504 bicycles with this information, 83.8% of the class
Highest gear: 504 bicycles with this information, 83.8% of the class