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Inspired by the very first Surly frame, the 1x1 Rat Ride
Inspired by the very first Surly frame, the 1x1 Rat Ride
Surly - Bikes/Frames

Surly Lowside Frameset in Black

Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Hassle free returns

If you wish to return an item, please contact us first and we will generate a returns number (GRN.) You have 14 days from the day of delivery to request the GRN, anything outside of 14 days is at our discretion on a case by case basis and may incur a re-stocking fee. If the item being returned is found to be faulty we will refund you the initial order carriage cost, and then offer you a full refund or replacement. We will also refund you the carriage cost to return it to us. If it is not faulty, we will offer you a refund or replacement, but not the initial order carriage cost or the cost to return it.

Surly Lowside Frameset in Black

Season:2018

Brand:Surly - Bikes/Frames

Code:fmsu-lows-145BLK

The Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out. It should come as no surprise that single speeds run deep in our DNA and have since day one.

Let’s take a brief jaunt down the ‘ol memory lane, shall we? Way back in ’98, we launched the 1x1 Rat Ride. It was our first frame, and, for a lot of people, a first foray into the world of single speeds. After many years and many trips to our favorite bar, the sunrise, we decided to discontinue it. The lowside picks up right where the 1x1 left off.

We added in some fancy new modern features like a hole for a dropper post cable, our Gnot-boost rear spacing, and thru-axles, but don’t let all that scare you. We didn’t leave you late-adopters behind. Lowside’s Gnot-boost rear spacing is compatible with 142x12mm or 148x12mm thru-axle rear hubs as well as 135x10mm QR hubs (when using 10/12 adapter washers). That cross-compatibility makes the lowside a perfect parts-bin bike. If you have parts lying around, chances are they’ll work (unless you have rim brakes, those won’t work here).

Lowside also features a 110x15mm fork with a generous tyre clearance of 27.5x2.8" or 26x3". We spec it with 26+ Dirt Wizards and a Sunrise bar so you have no excuse to be boring.

Hop curbs, cut through alleys, and find some shortcuts. If you’re looking for some mischief on the way to the trail, you can find it on lowside.

Technical Information
  • 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) [3]
    1x (Mtn): 33T
    1x (Boost): 36T
  • Bottom Bracket
    73mm threaded (1.37" x 24TPI)
  • Tire Clearance Frame [1]/[2]
    26 x 3.0"
    27.5 x 2.8"
  • Tire Clearance Fork [1]
    26 x 3.0"
    27.5 x 2.8"
  • Rigid Fork Spec
    420 x 47mm
  • Max Suspension Fork Length [4]
    490 x 47mm (26 100mm)
  • Bottle Mounts Frame
    1 Standard
  • Bottle Mounts Fork
    N/A
  • Rack Mounts Frame
    N/A
  • Rack Mounts Fork
    N/A
  • Fender Mounts Frame
    N/A
  • Fender Mounts Fork
    N/A
  • Other Features
    Internal dropper post routing compatible
Sizing Information
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