Cervélo Áspero GRX RX820

Name: Cervélo Áspero GRX RX820
Brand: Cervélo

2025 RoadGravel Manufacturer page

Cervélo Áspero GRX RX820, color Marigold

Last known price: $4,250

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 31–48t / 11–36t
Gear range: 507%
Weight: 9.01 kg 19.9 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

48cm
51cm
54cm
56cm
58cm
61cm

The manufacturer did not publish rider heights for these sizes.

Components

16 of 17 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

Carbon fiber Not identified

Suspension

1 part

Fork
- Cervélo

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Shimano CS-HG710-12 12 speeds 11–36t
CS-HG710-12
Chain
- Shimano Deore XT CN-M8100
CN-M8100
Crankset
- Shimano GRX FC-RX820 12 speeds 48/31t
FC-RX820
Front derailleur
- Shimano GRX FD-RX820 2 speeds
FD-RX820
Rear derailleur
- Shimano GRX RD-RX820 12 speeds
RD-RX820
Shifters
- Shimano GRX ST-RX820
ST-RX820

Brakes

1 part

Brakes
- Shimano GRX BR-RX820
BR-RX820

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Sizes and geometry

6 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

Reach 388mm

Stack 555mm

Wheelbase 1010mm

Head angle 72.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	370	379	388	397	406	415
Stackmm	505	530	555	580	605	630
Top tube lengthmm	512	532	553	575	591	608
Seat tube lengthmm	480	510	540	560	580	610
Head tube lengthmm	83	107	133	159	188	214
Head tube angle	71°	71.5°	72°	72°	72°	72°
Seat tube angle	74.5°	74°	73.5°	73°	73°	73°
Chainstay lengthmm	425	425	425	425	425	425
Wheelbasemm	990	999	1010	1028	1046	1063
Front centermm	577	587	597	614	631	648
Bottom bracket dropmm	78.5	78.5	76	76	73.5	73.5
Bottom bracket heightmm	270	270	273	273	275	275
Standover heightmm	681	704	733	757	784	808
Fork rakemm	52	49	46	46	46	46
Trailmm	62	62	62	62	62	62
Stack/reach ratio	1.37	1.40	1.43	1.46	1.49	1.52

Not published by the manufacturer: 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
Bicycle weight: 9.01 kg

19.9 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 31
Largest chainring: 48
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 25.0 in
Highest gear: 126.6 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: T47
Tire width: 45c
Wheel material: Carbon
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

25.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

126.6 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.6 km/h
Highest gear: 48.5 km/h

Total gear range 507%

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: 25.0–126.6 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% 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 Cervélo Áspero GRX RX820	Cervélo Áspero 1 Apex XPLR	Cervélo Áspero 1 Apex XPLR AXS	Cervélo Áspero GRX RX610	Cervélo Áspero GRX RX825 Di2	Cervélo Áspero 1 Rival XPLR AXS
Frame
Bicycle weight	9.01 kg	9.13 kg	8.9 kg	9.44 kg	8.78 kg	8.68 kg
Drivetrain
Front chainrings	2	1	1	2	1	1
Smallest chainring	31	40	40	30	44	40
Largest chainring	48	40	40	46	44	40
Rear sprockets	12	12	12	12	12	13
Smallest sprocket	11	11	11	11	10	10
Largest sprocket	36	44	44	36	51	46
Lowest gear	25.0 in	26.4 in	26.4 in	24.2 in	25.0 in	25.2 in
Highest gear	126.6 in	105.5 in	105.5 in	121.3 in	127.6 in	116.0 in
Cockpit
Shifting	Mechanical	Mechanical	Electronic	Mechanical	Electronic	Electronic
Other specifications
Wheel material	Carbon	Aluminum	Carbon	Aluminum	Carbon	Carbon
Power meter	Not informed	Not informed	Not informed	Not informed	4iiii Precision, GEN3+ Single SidedAdditional specification: Model display: PrecisionAdditional specification: Model id: precision	Not informed