Jamis Hudson E1

2026 UrbanComfort Electric bicycle Manufacturer page

Last known price: $1,899

Prices shown first for United States
Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 8 42t / 11–38t
Gear range: 345%
Battery: 250 Wh
Weight: 17.01 kg 37.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 of 20 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

6061 Aluminum frame, Internal cable routing, Rear mount kickstand, Replaceable derailleur hanger, Integrated battery, Integrated lighting and Rack/Fender mounts. Not identified

Electric system

2 parts

Battery

Hyena Integrated 250Wh Not identified
Motor

Hyena hub motor 250w, 40Nm Not identified

Suspension

1 part

Fork

6061 Aluminum rigid, 62mm crown Not identified

Drivetrain

6 parts

Bottom bracket

Sealed cartridge, 68 x 122.5mm w/ single side torque sensor Not identified
Cassette
- microSHIFT 11–38t
Chain
- KMC Z8.3 8 speeds
Crankset

Alloy 42T, Double chainguard Not identified
Rear derailleur
- microSHIFT Acolyte
Shifters
- microSHIFT Acolyte

Brakes

1 part

Brakes
- Tektro HD-M280 / HD-M281
HD-M280HD-M281

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips

Kraton comfort w/ clamp Not identified
Handlebar

Comfort hi-rise, alloy 25.4 x 80mm rise x 15˚ sweep x 640mm Not identified
Headset

Integrated cable routing ZS Not identified
Pedals

Comfort platform with TPE non-slip insert Not identified
Saddle
- Jamis
Seatpost

Alloy micro-adjust, 31.6 x 300mm, with alloy QR clamp Not identified
Stem
- Jamis

Sizes and geometry

3 sizes Open in the geometry plotter

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

Size SM

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	612	620	641
Seat tube lengthmm	356	457	483
Head tube lengthmm	210	217	200
Head tube angle	68°	68°	68°
Seat tube angle	67°	67°	67°
Chainstay lengthmm	475	475	475
Wheelbasemm	1098	1106	1127
Bottom bracket heightmm	286	286	286
Standover heightmm	466	488	797
Fork rakemm	55	55	55

Not published by the manufacturer: Reach, Stack, Front center, Bottom bracket drop, Trail, Stack/reach ratio, 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: Aluminum
Fork material: Aluminum
Bicycle weight: 17.01 kg

37.5 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 38
Lowest gear: 30.4 in
Highest gear: 105.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 250 Wh

Additional specifications

Battery: Hyena Integrated 250Wh
Tire width: 2.4″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 650b

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.6 km/h
Highest gear: 40.2 km/h

Total gear range 346%

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: 30.4–105.0 gear inches

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

Differences across 2026 builds
Specification	This bicycle Jamis Hudson E1	Jamis Hudson E2
Frame
Fork material	Aluminum	Steel
Bicycle weight	17.01 kg	21.55 kg
Drivetrain
Rear sprockets	8	7
Smallest sprocket	11	14
Largest sprocket	38	34
Lowest gear	30.4 in	34.0 in
Highest gear	105.0 in	82.5 in
Electric bicycle systems
Battery capacity	250 Wh	309 Wh
Other specifications
Tire width	2.4″	2.35″