Colnago AC-R Disc 105

2019 RoadRace

Last known price: $3,399

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

Sizes

Size guide

42cm
45cm
48cm
50cm
52cm
54cm
56cm
58cm

The manufacturer did not publish rider heights for these sizes.

Components

17 of 19 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

Monocoque Carbon Not identified

Suspension

1 part

Fork
- Colnago

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano CS-5800
CS-5800
Chain
- Shimano
Crankset
- Shimano FC-RS500 50/34t
FC-RS500
Front derailleur
- Shimano 105 FD-5800
FD-5800
Rear derailleur
- Shimano 105 RD-5800
RD-5800
Shifters
- Shimano
BR-RS505

Brakes

2 parts

Brakes
- Shimano BR-R785
BR-R785
Disc rotors
- Shimano SM-RT81
SM-RT81

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Handlebar
- Deda
Headset
- FSA
Pedals

Not Included Not identified
Saddle
- Selle Italia
Seatpost
- Colnago
Stem
- Deda

Sizes and geometry

8 sizes Open in the geometry plotter

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

Size 50cm

Table

Geometry diagram unavailable

The drawing needs wheelbase, head tube angle 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 8 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	371	376	381	382	382	385	397	401
Stackmm	519	524	530	546	567	582	592	607
Top tube lengthmm	504	515	527	537	550	565	580	590
Seat tube lengthmm	390	420	450	470	490	515	525	540
Head tube lengthmm	124	127	130	146	166	181	190	206
Seat tube angle	75.6°	75.1°	74.5°	74°	73.57°	72.83°	72.72°	72.77°
Chainstay lengthmm	398	399	402	405	408	411	412	414
Stack/reach ratio	1.40	1.39	1.39	1.43	1.48	1.51	1.49	1.51

Not published by the manufacturer: Head tube angle, 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: Carbon
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: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 23c
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

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 2019 builds

Differences across 2019 builds
Specification	This bicycle Colnago AC-R Disc 105	Colnago AC-R 105
Drivetrain
Front chainrings	2	Not informed
Smallest chainring	34	Not informed
Largest chainring	50	Not informed
Rear sprockets	11	Not informed
Smallest sprocket	11	Not informed
Largest sprocket	28	Not informed
Lowest gear	35.2 in	Not informed
Highest gear	131.8 in	Not informed
Brakes
Brake type	Hydraulic disc	Not informed
Cockpit
Seatpost	Rigid seatpost	Not informed
Other specifications
Tire width	23c	Not informed
Wheel material	Aluminum	Not informed
Tire clearance	Not informed	Maximum tire width: 25c