Basso Astra SRAM Rival AXS 2x12

Name: Basso Astra SRAM Rival AXS 2x12
Brand: Basso

2025 RoadRace Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €4,749 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 35–48t / 10–36t
Gear range: 494%
Frame: Carbon
Brakes: Rim brake

Sizes

Size guide

45cm
48cm
51cm
53cm
56cm
58cm
61cm

The manufacturer did not publish rider heights for these sizes.

Components

3 of 4 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.

Drivetrain

3 parts

Brakes

1 part

Brakes

Rim Not identified

Sizes and geometry

7 sizes Open in the geometry plotter

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

Size 53cm

Table

Geometry diagram unavailable

The drawing needs wheelbase 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 7 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	371.1	371.1	374.5	380.4	382.1	384.4	385.5
Stackmm	538.9	538.9	563.4	575.9	602.4	625.4	650.4
Top tube lengthmm	505	515	525	545	560	575	590
Seat tube lengthmm	450	480	510	530	560	580	610
Head tube lengthmm	125	125	150	162	180	204	228
Head tube angle	71.8°	71.8°	72°	72.3°	73.5°	73.5°	74°
Seat tube angle	76°	75°	75°	74°	73.5°	73°	72.5°
Chainstay lengthmm	404	404	404	404	406	410	410
Stack/reach ratio	1.45	1.45	1.50	1.51	1.58	1.63	1.69
Suspension and parts
Handlebar widthmm	400	400	420	420	420	420	440
Stem lengthmm	80	90	100	110	110	120	120

Not published by the manufacturer: Wheelbase, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Front travel, Rear travel, Crank 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: 35
Largest chainring: 48
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 36
Lowest gear: 28.2 in
Highest gear: 139.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Shifting: Electronic

Additional specifications

Tire clearance: Maximum tire width: 35c
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

28.2 gear inches

This value is below the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Highest gear

139.2 gear inches

This value is above the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Shifting

Electronic

643 of 969 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2025
Sample: 969 bicycles with this information
Coverage: 99.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.8 km/h
Highest gear: 53.3 km/h

Total gear range 494%

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: 28.2–139.2 gear inches
Class reference (p10–p90): 28.2–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2025
Lowest gear: 762 bicycles with this information, 78.1% of the class
Highest gear: 762 bicycles with this information, 78.1% 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

Differences across 2025 builds
Specification	This bicycle Basso Astra SRAM Rival AXS 2x12	Basso Astra Shimano 105 Di2	Basso Astra Shimano Ultegra 8170 Di2
Drivetrain
Smallest chainring	35	34	34
Largest chainring	48	50	50
Rear sprockets	12	12	Not informed
Smallest sprocket	10	11	11
Largest sprocket	36	34	34
Lowest gear	28.2 in	29.0 in	29.0 in
Highest gear	139.2 in	131.8 in	131.8 in
Brakes
Brake type	Rim brake	Hydraulic disc	Rim brake
Cockpit
Seatpost	Not informed	Not informed	Rigid seatpost
Other specifications
Tire width	Not informed	Not informed	28c
Wheel material	Not informed	Not informed	Aluminum