Dolan RDX Aluminium Disc Shimano 12s 105 R7120

2023 RoadEndurance Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £1,649 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 34–50t / 11–34t
Gear range: 455%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

49cm
52cm
54cm
56cm
58cm

The manufacturer did not publish rider heights for these sizes.

Components

12 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

RDX Aluminium Disc Frame Not identified

Suspension

1 part

Fork
- Alpina

Drivetrain

6 parts

Bottom bracket

Press Fit Not identified
Cassette
- Shimano 105 CS-R7101-12 12 speeds
CS-R7101-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset

105-R7100 12s Chainset - 170mm 50/34T Not identified
Front derailleur
- Shimano 105 FD-R7100 2 speeds
FD-R7100
Rear derailleur
- Shimano 105 RD-R7100 12 speeds
RD-R7100

Brakes

1 part

Brakes
- Shimano 105
BR-R7120FBR-R7120R

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Other components

2 parts

Fenders

None-Fitted Not identified
Racks

None-Fitted Not identified

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size 54cm

Table

Geometry diagram unavailable

The drawing needs wheelbase, chainstay length 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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	376.4	375	376.4	384.9	394.2
Stackmm	535.9	558.7	568.1	589	608.1
Top tube lengthmm	520	535	550	565	580
Seat tube lengthmm	490	520	540	560	580
Head tube lengthmm	120	140	150	170	190
Head tube angle	70°	71°	71°	72°	72°
Seat tube angle	74°	74°	73°	73°	73°
Stack/reach ratio	1.42	1.49	1.51	1.53	1.54

Not published by the manufacturer: Chainstay length, 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: 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: 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

29.0 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2023
Sample: 635 bicycles with this information
Coverage: 70.4% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2023
Sample: 635 bicycles with this information
Coverage: 70.4% of the class

Shifting

Mechanical

449 of 901 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2023
Sample: 901 bicycles with this information
Coverage: 100.0% 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): 26.6–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2023
Lowest gear: 635 bicycles with this information, 70.4% of the class
Highest gear: 635 bicycles with this information, 70.4% 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 2023 builds

Differences across 2023 builds
Specification	This bicycle Dolan RDX Aluminium Disc Shimano 12s 105 R7120	Dolan RDX Aluminium Disc Bike - Campag Ekar 1x13	Dolan RDX Aluminium Disc Shimano 105 R7020	Dolan RDX Aluminium Disc Bike - Flat-Handlebar Shimano 105 R7020	Dolan RDX Aluminium Disc Shimano 12s 105 R7170 Di2	Dolan RDX Aluminium Disc Shimano Ultegra R8020
Drivetrain
Front chainrings	2	1	2	2	2	2
Smallest chainring	34	38	34	34	34	34
Largest chainring	50	38	50	50	50	50
Rear sprockets	12	13	11	11	12	11
Smallest sprocket	11	9	11	11	11	11
Largest sprocket	34	36	28	28	34	28
Lowest gear	29.0 in	30.6 in	35.2 in	35.2 in	29.0 in	35.2 in
Highest gear	131.8 in	122.4 in	131.8 in	131.8 in	131.8 in	131.8 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Electronic	Mechanical
Other specifications
Bottom bracket standard	Not informed	Not informed	Not informed	Not informed	Not informed	BSA