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2021 Jamis

HUDSON DISC

A 650b aluminum frame comfort bike with upper mid-range components and tektro hydraulic disc brakes.
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Manufacturer Price

$779
Weight13.8 kg  
FrameAluminum
SuspensionRigid
ForkSteel
Wheels650b Aluminum
Drivetrain1 × 9
GroupsetDeore, microSHIFT R9
BrakesTektro Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

48 km/h

HUDSON DISC

47 km/h

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Highest gear

(descending)

Geometry
Specs
Build
Frame

6061 TIG-welded aluminum, Hudson laid-back design with low ride height, alloy kickstand

Fork

Hi-tensile unicrown with radiused blades

Bottom Bracket

Sealed cartridge, 68 x 122.5mm

Headset

Internal cup, threaded, 1 1/8”

Stem

Jamis alloy, 180mm quill x 80mm extension

Handlebar

Comfort hi-rise, alloy 25.4 x 80mm rise x 15 ̊ sweep x 640mm

Saddle

Jamis Comfort with memory foam, synthetic suede top, burnished side panels and bumper springs

Seatpost

Alloy micro-adjust, 31.6 x 300mm, with alloy QR clamp

TypeRigid

Pedals

Comfort platform with TPE non-slip insert

Grips

Kraton comfort w/ clamp

Groupset
Rear Derailleur

Shimano Deore M591

Crank

Forged alloy crank, single 40T chainring, 170mm, with full length chainguard

Shifters

Sun Race DLM903 R9

Cassette

Sun Race CSM90-9AW 11-36T

Chain

KMC Z9

Brakes

Tektro HD-M275 hydraulic disc brake

TypeTektro Hydraulic Disc

Wheels
Rims

Alex DC25 alloy double-wall rims, 36H, Formula alloy QR hubs, 14g black stainless steel spokes

Tires

CST Metropolitan Palm Bay, 27.5 x 2.35

Rider Notes
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First added 31 July

Last updated 6 November

Not listed for 1,301 days