Surly Lowside Single-Speed MTB DT Swiss

The ultimate single-speed mountain bike for trails, the city and adventure.

Colour and size: New Pig Smell XS (10–20 days)

Colour and size: XS, S, M, L, XL Blue Monday 2026

In stock

Specifications: (Subject to change)

• Frame: Surly Lowside, 27.5

• Fork: Surly Lowside rigid fork (optional: suspension fork)

• Seatpost clamp: Surly stainless steel 33.1 mm

• Headset: Ritchey Logic – silver

• Brakes: Shimano Deore (SLX 4-piston)

• Brake levers & rotors: Shimano 160 mm front & rear

• Gears: None – a true single-speed feel

• Stem: Ergotec Top Load, 22.2 mm

• Handlebars: Sunrise Bar Riser, 22.2 mm (incl. 31.8 mm shims), dimensions: 820 x 83 mm, angle: 14.7°/6.7° or Renthal

• Grips: Grey (Black)

• Saddle: WTB, black (optional)

• Seatpost: 2-bolt, 30.9 mm – silver

• Crankset: SRAM NX 32t

• Bottom bracket: SRAM DUB, 1x1

• Hubs: DT Swiss 13t with spacer kit

• Chain: KMC or SRAM

• Wheels: DT Swiss FR 571-(541) – silver

• Tyres: Surly Dirt Wizard+ 27.5 x 2.8", 60 TPI

Product description:

The Surly Lowside is an uncompromising single-speed mountain bike for those who prefer a purist approach. The frame kit offers maximum flexibility for custom builds – true to the ‘à la carte’ philosophy.

The Lowside is the grown-up version of the bike you rode as a child – back when you still had big dreams and ambitious plans. It feels just as at home on the singletrack as it does outside your favourite pub.

The Lowside is a single-speed mountain bike. Ever since the launch of the 1x1 Rat Ride, single-speeding has been part of Surly’s DNA. After countless Homie Fall Fests and more feats of strength than we can count, we discontinued the 1x1 a few years ago. Lowside picks up exactly where the 1x1 left off.

🔧 Technical highlights:

• Compatible with modern trail standards: dropper post, 44 mm head tube, Gnot-Boost rear triangle, thru-axles

• Fits most mountain bike standards – ideal as a spare parts bike (note: no rim brakes!)

• Depending on the model year, fitted with 26 x 3" or 27.5 x 2.8" tyres – both options are still available