Jamis Hudson Disc

2021 UrbanComfort Manufacturer page

Last known price: $779

Prices shown first for United States
Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 9 40t / 11–36t
Gear range: 327%
Weight: 13.83 kg 30.5 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 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

6061 TIG-welded aluminum, Hudson laid-back design with low ride height, alloy kickstand Not identified

Suspension

1 part

Fork

Hi-tensile unicrown with radiused blades Not identified

Drivetrain

6 parts

Bottom bracket

Sealed cartridge, 68 x 122.5mm Not identified
Cassette
- SunRace 11–36t
Chain
- KMC Z9 9 speeds
Crankset

Forged alloy crank, single 40T chainring, 170mm, with full length chainguard Not identified
Rear derailleur
- Shimano Deore RD-M591
RD-M591
Shifters
- SunRace

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

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

Internal cup, threaded, 1 1/8” 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

5 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 5 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	587	597	607	627	648
Seat tube lengthmm	356	432	457	483	533
Head tube lengthmm	165	160	185	180	200
Head tube angle	68°	68°	68°	68°	68°
Seat tube angle	67°	67°	67°	67°	67°
Chainstay lengthmm	485	485	485	485	485
Wheelbasemm	1101	1111	1121	1141	1162
Bottom bracket heightmm	286	286	286	286	286
Standover heightmm	466	761	488	797	824
Fork rakemm	55	55	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: Steel
Bicycle weight: 13.83 kg

30.5 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 30.6 in
Highest gear: 100.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.35″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 650b

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.7 km/h
Highest gear: 38.3 km/h

Total gear range 327%

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: 30.6–100.0 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 2021 builds

Differences across 2021 builds
Specification	This bicycle Jamis Hudson Disc	Jamis Hudson	Jamis Hudson Disc Step-Over Frame	Jamis Hudson Disc STEP-THRU	Jamis Hudson Step-Over Frame	Jamis hudson STEP-THRU
Frame
Bicycle weight	13.83 kg	13.38 kg	Not informed	13.61 kg	13.38 kg	13.27 kg
Drivetrain
Smallest chainring	40	42	40	42	42	42
Largest chainring	40	42	40	42	42	42
Rear sprockets	9	7	9	9	7	7
Smallest sprocket	11	14	11	11	14	14
Largest sprocket	36	34	36	36	34	34
Lowest gear	30.6 in	34.0 in	30.6 in	32.1 in	34.0 in	34.0 in
Highest gear	100.0 in	82.5 in	100.0 in	105.0 in	82.5 in	82.5 in
Brakes
Brake type	Hydraulic disc	Rim brake	Hydraulic disc	Hydraulic disc	Rim brake	Rim brake