Basso Vega Gravel 610 Shimano GRX 1x12

Name: Basso Vega Gravel 610 Shimano GRX 1x12
Brand: Basso

2026 RoadGravel Electric bicycle Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 44t / 10–51t
Gear range: 510%
Battery: 500 Wh
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

5 of 7 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.

Electric system

2 parts

Battery
- Polini
Motor
- Polini

Drivetrain

3 parts

Brakes

1 part

Brakes

Mechanical Disc Not identified

Wheels and tires

1 part

Rims

Microtech MX 25 Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

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 Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	358.7	368.7	393.5	423.5
Stackmm	581.6	581.6	600.4	600.4
Top tube lengthmm	520	530	560	590
Seat tube lengthmm	470	490	540	570
Head tube lengthmm	165	165	185	185
Head tube angle	70°	70°	70°	70°
Seat tube angle	74.5°	74.5°	74.5°	74.5°
Chainstay lengthmm	450	450	450	450
Stack/reach ratio	1.62	1.58	1.53	1.42
Suspension and parts
Crank lengthmm	170	172.5	172.5	175
Handlebar widthmm	420	440	440	440
Stem lengthmm	90	100	100	110

Not published by the manufacturer: Wheelbase, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Front travel, Rear travel, 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: 44
Largest chainring: 44
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 25.0 in
Highest gear: 127.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Shifting: Mechanical

Electric system

Battery capacity: 500 Wh

Additional specifications

Battery: The engine is the Polini EP3 + GP, with more than 90 Nm of torque and 250W of power. The integrated 500 Wh Polini Evo 2 battery offers 5 customizable assistance levels and up to 220 km of assistance. A compact, powerful and durable propulsion system, compatible with the bottle battery extender (which adds an additional 250Wh of assistance) and technological accessories.
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

25.0 gear inches

This value is within 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

127.6 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

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: 9.6 km/h
Highest gear: 48.9 km/h

Total gear range 510%

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: 25.0–127.6 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 Basso Vega Gravel 610 Shimano GRX 1x12	Basso Vega Urban Shimano Cues 1x10
Frame
Fork material	Carbon	Not informed
Suspension
Suspension configuration	Rigid	Not informed
Drivetrain
Rear sprockets	12	10
Smallest sprocket	10	11
Largest sprocket	51	48
Lowest gear	25.0 in	26.6 in
Highest gear	127.6 in	116.0 in
Brakes
Brake type	Mechanical disc	Rim brake
Other specifications
Battery	Capacity: 500 WhThe engine is the Polini EP3 + GP, with more than 90 Nm of torque and 250W of power. The integrated 500 Wh Polini Evo 2 battery offers 5 customizable assistance levels and up to 220 km of assistance. A compact, powerful and durable propulsion system, compatible with the bottle battery extender (which adds an additional 250Wh of assistance) and technological accessories.	Capacity: 500 WhThe engine is the Polini EP3 + Evo, with more than 75Nm of torque and 250W of power. The integrated 500 Wh Polini battery offers 5 customizable assistance levels and up to 220 km of assistance. A compact, powerful and durable propulsion system, compatible with the bottle battery extender (which adds an additional 250Wh of assistance) and technological accessories.
Suspension	Rigid	Not informed
Travel	Configuration: Rigid	Not informed
Tire clearance	Not informed	Maximum tire width: 45c

Changes since 2025
Specification	2025 Basso Vega Gravel 610 Shimano GRX 1x12	This bicycle Basso Vega Gravel 610 Shimano GRX 1x12
Other specifications
Battery	Capacity: 500 WhThe engine is the Polini EP3 + GP, with more than 80 Nm of torque and 250W of power. The integrated 500 Wh Polini battery offers 5 customizable assistance levels and up to 220 km of assistance. A compact, powerful and durable propulsion system, compatible with the bottle battery extender (which adds an additional 250Wh of assistance) and technological accessories.	Capacity: 500 WhThe engine is the Polini EP3 + GP, with more than 90 Nm of torque and 250W of power. The integrated 500 Wh Polini Evo 2 battery offers 5 customizable assistance levels and up to 220 km of assistance. A compact, powerful and durable propulsion system, compatible with the bottle battery extender (which adds an additional 250Wh of assistance) and technological accessories.