Specification

Details

Model

Big Dummy

Vehicle Category

Longtail Cargo Bike

Application

Cargo hauling, urban commuting, family transport, grocery getter, business use

Starting Price (2025)

$2,449.00 USD

Color Options

Bruised Ego Purple

Specification

Details

Frame

100% Surly 4130 Chromoly steel, Natch tubing, double-butted main triangle, TIG welded

Fork

100% Surly Chromoly steel, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated

Drivetrain Compatibility

1x9 speed, compatible with single-speed and internal-gear hubs (135mm O.L.D.), chain tensioner required

Dropouts

Vertical, 135mm spaced with fender eyelets, Rohloff compatible

Bottom Bracket

73mm BSA threaded (1.37" x 24TPI)

Crankset

Race Face, 32t

Chain

KMC X10 10-Speed, tandem cables required

Rear Derailleur

microSHIFT Advent 1x9 Speed, RD-M6195M

Shifter

microSHIFT Advent Trail 1x9 shifter, SL-M9195-R

Cassette

microSHIFT Advent 11-46t, 9-speed

Specification

Details

Seating

1-2 passengers (with Dummy Rail Collars for human cargo)

Cargo Capacity

400 lbs (combined rider and cargo weight limit, up to 200 lbs cargo)

Wheels/Tyres

Surly ExtraTerrestrial Tyre - 26 x 2.5", Tubeless, Folding, Black/Slate, 60tpi (tubes installed)

Wheel Size

26 in

Alternate Wheel/Tyre Sizes

27.5 x 1.5-2.0" w/ or w/o fenders, 700c x 28-32mm w/ or w/o fenders

Brakes

Avid BB7 S MTN, 51mm IS (160-203mm rotors), SRAM CenterLine 200/180mm rotors

Brake Levers

Avid FR-5

Handlebar

Surly Terminal Bar, width 718mm (Small), 735mm (Medium, Large)

Stem

Kalloy 31.8, length 70mm (Small, Medium), 80mm (Large)

Headset

Cane Creek 40, EC34 upper and lower

Saddle

Selle Italia X-Base

Seatpost

Kalloy 30.9mm, 350mm, dropper post compatible

Seatpost Clamp

Surly Stainless 33.1mm

Grips

Velo Black

Front Hub

Novatec QR x 100, 36h

Rear Hub

Novatec QR x 135, 36h

Rims

OE, 38mm, 36h

Spokes

DT Swiss 2.0 Stainless

Interior Features

Dummy Rail Collars for human cargo, bottle mounts (Small: 2 standard, 1 3-pack; Medium/Large: 3 standard, 1 3-pack), kickstand plate

Exterior Features

Fender eyelets, Surly Trip Guides for brake/shift housing, dedicated Rohloff cable routing, OEM 2 axle plate, compatible with Big Dummy Bags and Xtracycle Longtail Standard, four 3-pack mounts on fork, rack mounts (upper, lower, mid-blade)