Ventum ES1-G Electric

Name: Ventum ES1-G Electric
Brand: Ventum

2026 RoadGravel Electric bicycle Manufacturer page

Last known price: $5,999

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 42t / 10–51t
Gear range: 510%
Battery: 504 Wh
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 155–168
SM 163–174
MD 170–181
MD/LG 175–187
LG 181–193
XL 188–200

Components

17 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

Ventum ES1-G Electric Gravel Bike Frame | Full carbon fiber construction | Internal cable routing | Flat mount disc brake | UDH Not identified

Electric system

3 parts

Suspension

1 part

Fork
- Ventum

Drivetrain

7 parts

Bottom bracket

None
Cassette
- Shimano Deore XT 10–51t
Chain
- Shimano Deore XT CN-M8100
CN-M8100
Crankset
- Shimano Steps 42t
Front derailleur

None
Rear derailleur
- Shimano Deore XT
Shifters
- Shimano Ultegra

Brakes

2 parts

Wheels and tires

2 parts

Rims
- WTB
Tires
- WTB

Cockpit and contact points

4 parts

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 414mm

Stack 545mm

Wheelbase 1069mm

Head angle 70.0°

Seat angle 72.5°

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 Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	399	405	414	423	432	441
Stackmm	506	522	545	570	589	604
Top tube lengthmm	559	570	586	603	618	631
Seat tube lengthmm	531	547	571	598	618	633
Head tube lengthmm	90	105	128	150	166	180
Head tube angle	69°	69.5°	70°	71°	72°	72.5°
Seat tube angle	72.5°	72.5°	72.5°	72.5°	72.5°	72.5°
Chainstay lengthmm	435	435	435	435	435	435
Wheelbasemm	1049	1057	1069	1077	1083	1091
Front centermm	624	631	644	652	657	665
Bottom bracket dropmm	70	70	70	70	70	70
Bottom bracket heightmm	279	279	279	279	279	279
Standover heightmm	776	792	815	839	858	872
Fork rakemm	50	50	50	50	50	50
Trailmm	86	82	79	72	65	62
Stack/reach ratio	1.27	1.29	1.32	1.35	1.36	1.37

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

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 23.9 in
Highest gear: 121.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Rigid seatpost
Shifting: Electronic

Electric system

Battery capacity: 504 Wh

Additional specifications

Battery: Shimano EP801 Battery | 504Wh | Internal, removable
Tire clearance: Maximum tire width: 50c; Additional specification: Wheel kind: 700
Tire width: 50c
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

23.9 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

Highest gear

121.8 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

Shifting

Electronic

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: 9.1 km/h
Highest gear: 46.7 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: 23.9–121.8 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