Surly Big Dummy 2026 March

...is a longtail cargo bike frameset built for maximum stability and resilience. With its robust steel tubes, large tyres and well thought-out components, it is ideal for heavy loads and everyday use.

Colour :twilight zone (black-grey colour with a subtle blue-green/petrol tint)

Current delivery time : March 2026 Pre-orders are possible, a deposit of 50% is required for a pre-order.

Size : S,M,L

Specification : from production (small changes are possible)

Frame & Fork

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

- Colour: Bruised Ego Purple

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

⚙️ Components

- Headset: Cane Creek 40

- Seat clamp: Surly stainless steel, Ø33.1 mm

- Seatpost: Kalloy Ø30.9 mm, length 350 mm

- Stem: Kalloy Ø31.8 mm

- Grips: Velo black

- Saddle: Selle Italia X-Base

- Handlebars: Surly Terminal Bar

🔧 Drivetrain

- Front derailleur: N/A (no front derailleur, 1x setup)

- Rear derailleur: microSHIFT Advent 1x9, RD-M6195M

- Cassette: microSHIFT Advent 11-46 teeth, 9-speed

- Chain: KMC X10 (10-speed)

- Crankset: Race Face, 32 teeth

- Shift lever: microSHIFT Advent Trail 1x9, SL-M9195-R

brakes

- Brake lever: Avid FR-5

- Brake callipers: Avid BB7 S MTN (mechanical disc brakes)

- Bottom bracket: Race Face

- Brake discs: SRAM CenterLine 200 mm (front) / 180 mm (rear)

🛞 Wheels

- Front tyre: Surly ExtraTerrestrial 26 x 2.5", tubeless, folding, black/slate, 60 tpi (tubes installed)

- Rear tyre: Surly ExtraTerrestrial 26 x 2.5", tubeless, folding, Black/Slate, 60 tpi (tubes installed)

- Front hub: Novatec QR x 100 mm, 36 hole

- Rear hub: Novatec QR x 135 mm, 36 hole

- Spokes: DT Swiss 2.0 stainless steel

- Rims: OE, 38 mm, 36 hole