2020 Jamis

hudson STEP-THRU

A 650b aluminum frame comfort bike with mid-range components and rim brakes.
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Manufacturer Price

$499
Weight29.5 lbs  
FrameAluminum
SuspensionRigid
ForkSteel
Wheels650b Aluminum
Drivetrain1 × 7
GroupsetTourney, Altus
BrakesRim
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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)

25 mph

hudson STEP-THRU

29 mph

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Highest gear

(descending)

Geometry
99 Spokes on YouTube99 Spokes on YouTube
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

Hi-rise comfort, 15˚ sweep x 80mm rise x 640mm wide

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

Classic block-style

Grips

Kraton comfort w/ clamp

Groupset
Rear Derailleur

Shimano RD-TY300 rear

Crank

Forged alloy crank, single 42T chainring, 170mm, with full length chainguard

Shifters

Shimano Altus SL-M310, 7-speed

Cassette

Shimano freewheel 7-speed, 14-34

Chain

KMC Z51

Brakes

SureStop braking system with forged alloy direct pull brakes & Tektro alloy comfort lever

TypeRim

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

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Last updated April 27
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