Dolan GXA Aluminium Disc Shimano GRX RX610 1x12 2x12

2026 RoadGravel Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £1,399 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 40t / 11–34t
Gear range: 309%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

49cm 155–163
52cm 161–169
54cm 166–175
56cm 172–181
58cm 178–186
61cm 183–191

Components

13 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

GXA Gravel Frame - (49cm X-SML) (Pre Order Arriving Wk1 July) Not identified

Suspension

1 part

Fork
- Alpina

Drivetrain

6 parts

Bottom bracket

Tthreaded Not identified
Cassette
- Shimano 105 CS-R7101-12 12 speeds
CS-R7101-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Crankset
- Shimano GRX FC-RX610-1 12 speeds 40t
FC-RX610
Front derailleur

None
Rear derailleur
- Shimano GRX RD-RX822-GS 12 speeds
RD-RX822-GSRD-RX822GS

Brakes

2 parts

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

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

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 Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	366	370	371	380	383	404.2
Stackmm	541	560	572	592	609	624
Top tube lengthmm	525	535	545	560	575	595
Seat tube lengthmm	490	520	540	560	580	610
Head tube lengthmm	120	140	150	170	190	210
Head tube angle	70.5°	71°	71.5°	72°	72°	72°
Seat tube angle	74.5°	74°	73°	73°	72.5°	73°
Stack/reach ratio	1.48	1.51	1.54	1.56	1.59	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: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 34.1 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 32c
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

34.1 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,452 bicycles with this information
Coverage: 73.2% of the class

Highest gear

105.5 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,452 bicycles with this information
Coverage: 73.2% of the class

Shifting

Mechanical

706 of 1,977 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2026
Sample: 1,977 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.1 km/h
Highest gear: 40.4 km/h

Total gear range 309%

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: 34.1–105.5 gear inches
Class reference (p10–p90): 22.8–127.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2026
Lowest gear: 1452 bicycles with this information, 73.2% of the class
Highest gear: 1452 bicycles with this information, 73.2% 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 2026 builds
Specification	This bicycle Dolan GXA Aluminium Disc Shimano GRX RX610 1x12 2x12	Dolan GXA Aluminium Disc Shimano 12s 105 R7120	Dolan GXA Aluminium Disc Shimano 12s 105 R7170 Di2	Dolan GXA Aluminium Disc Shimano GRX RX820 1x12 2x12	Dolan GXA Aluminium Disc Shimano GRX RX825 Di2 2x12
Drivetrain
Front chainrings	1	2	2	1	2
Smallest chainring	40	34	34	40	31
Largest chainring	40	50	50	40	48
Largest sprocket	34	34	34	30	30
Lowest gear	34.1 in	29.0 in	29.0 in	38.7 in	30.0 in
Highest gear	105.5 in	131.8 in	131.8 in	105.5 in	126.6 in
Cockpit
Shifting	Mechanical	Mechanical	Electronic	Mechanical	Electronic