Dolan Sporco Carbon Disc Shimano GRX RX610 1x12 2x12

2025 RoadCyclocross Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £2,349 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 40t / 10–45t
Gear range: 450%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 158–167
SM 165–173
MD 169–180
LG 177–186
XL 183–191
XXL 186–194

Components

13 of 16 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

Sporco Frame - (LRG) Not identified

Suspension

1 part

Fork
- Dolan

Drivetrain

6 parts

Bottom bracket

BB86 Not identified
Cassette
- Shimano SLX CS-M7100 12 speeds
CS-M7100
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

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, 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	375	380	382	386	391	398
Stackmm	518.2	529.5	554	566.4	580.6	604.4
Top tube lengthmm	509	527	541	559	568.5	582.2
Seat tube lengthmm	500	520	540	560	580	600
Head tube lengthmm	100	110	135	145	160	185
Head tube angle	70.5°	71°	71.5°	72°	72°	72°
Seat tube angle	75.5°	74.5°	74°	73°	73°	73°
Stack/reach ratio	1.38	1.39	1.45	1.47	1.49	1.52

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: Carbon
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: 10
Largest sprocket: 45
Lowest gear: 25.8 in
Highest gear: 116.0 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: BB86/BB92
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

25.8 gear inches

This value is below the central range for this class.

Cohort: Road / Cyclocross Model year: 2025
Sample: 80 bicycles with this information
Coverage: 90.9% of the class

Highest gear

116.0 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2025
Sample: 80 bicycles with this information
Coverage: 90.9% of the class

Shifting

Mechanical

27 of 88 bicycles with this information use electronic shifting.

Cohort: Road / Cyclocross Model year: 2025
Sample: 88 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.9 km/h
Highest gear: 44.4 km/h

Total gear range 450%

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: 25.8–116.0 gear inches
Class reference (p10–p90): 23.6–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Cyclocross Model year: 2025
Lowest gear: 80 bicycles with this information, 90.9% of the class
Highest gear: 80 bicycles with this information, 90.9% 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
Specification	This bicycle Dolan Sporco Carbon Disc Shimano GRX RX610 1x12 2x12	Dolan Sporco Carbon Disc Shimano GRX RX820 1x12 2x12	Dolan Sporco Carbon Disc Shimano GRX RX825 Di2 2x12
Drivetrain
Front chainrings	1	1	2
Smallest chainring	40	40	31
Largest chainring	40	40	48
Smallest sprocket	10	10	11
Largest sprocket	45	45	30
Lowest gear	25.8 in	25.8 in	30.0 in
Highest gear	116.0 in	116.0 in	126.6 in
Cockpit
Shifting	Mechanical	Mechanical	Electronic