Surly Lowside Tangerine Dreams 27.5+ Bike


Lowside is like the grownup version of the bike you rode when you were a kid and still had hopes and dreams and some semblance of ambition. It’s just as happy riding singletrack as it is parked outside your favorite drinking establishment.

Lowside is a single speed mountain bike. Singlespeeding has been a part of Surly’s DNA since day one when we launched the 1×1 Rat Ride. After a lot of Homie Fall Fests and more feats of strength than we can recall, we decided to discontinue it a couple years back. Lowside picks up right where the 1×1 left off.

“Some have dubbed the Lowside the ultimate pub cruiser.”

  • Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles
  • Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though)
  • Spec’d in alternating years with 26 x 3” or 27.5 x 2.8” tires, the Lowside remains capable of running either option
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Shipping information

This product is: An Complete Bicycle

Complete Bicycle - This is a complete bicycle in a large box and costs a fair bit to package and ship.

See our Shipping Information page for more information on shipping costs, or add this item to your cart to see its shipping cost.




  • Frame Construction: 4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, ED coated
  • Fork Construction: 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
  • Rear Dropout Configuration: Horizontal slotted with optional vertical dumpout
  • Rear Hub Spacing: “Gnot-Boost” 145mm | 12 x 142mm or 12 x 148mm (Surly axle included) | 10 x 135mm with Surly 10/12 Adapter Washers (not included)
  • Front Hub Spacing: 15 x 110mm (Surly axle included)
  • Rear Brake: Disc – 51mm I.S. (203mm max rotor)
  • Front Brake: Disc – 51mm I.S. (203mm max rotor)
  • Head Tube: Ø44mm
  • Steerer Tube: Ø28.6mm (1-1/8″)
  • Crown Race: Ø30mm (1-1/8″)
  • Stock Headset Upper (S.H.I.S): ZS44/28.6
  • Stock Headset Lower (S.H.I.S): EC44/30
  • Seat Collar: Ø33.1mm
  • Seatpost: Ø30.9mm
  • Front Derailleur (Clamp): High direct mount top-pull (Ø34.9mm) | 26mm offset adapter (not included) for 142 or 135mm rear hub spacing | 29mm offset adapter (not included) for 148mm rear hub spacing
  • Max Chainring (CL): 1x (Mtn):  33T | 1x (Boost):  36T
  • Bottom Bracket: 73mm threaded (1.37″ x 24TPI)
  • Tyre Clearance Frame: 26 x 3.0″ | 27.5 x 2.8″
  • Tyre Clearance Fork: 26 x 3.0″ | 27.5 x 2.8″
  • Rigid Fork Spec: 420 x 47mm
  • Max Suspension Fork Length: 490 x 47mm (26 100mm)
  • Bottle Mounts Frame: 1 Standard
  • Other Features: Internal dropper post routing compatible 


Please refer to the Surly website for details

Reviews & Discussion (1)

Reviews & Questions

What others are saying

  1. Question


    Just wondering if it would be possible to put an internal gear hub on this (say a three speed)

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • Adam Macbeth

      Adam Macbeth

      Jon you COULD but it’s our view that an internal gear takes away a bit too much from the playful nature of a Lowside. Also, the only internal gear hub that comes in the right specification for a Lowside in the Rohloff Speedhub which would make the project rather expensive.

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

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