SURLY Lowside Frame Set
S / Pink
¥161,700
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Check your size based on your height
Check your size based on your height
Shows size options that fit your height. Fit can vary with proportions, riding style, and position, so please use this as a general guide.
Size options
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Sizing can change with riding style and position. If you are near a boundary, please contact Circles.
A bike that carries on the identity of the famous 1x1
"Lowside is like a very popular version of the bike you rode as a kid, still seeing hopes, dreams, and a little more ambition. It's as happy to ride one as it is to park outside your favorite bar."
SURLY's first frame was a dedicated single-speed frame called the 1x1 RAT RIDE. The LOWSIDE is the successor to that DNA.
The LOWSIDE frame is equipped with a rear derailleur hanger, so it can be used for both single speed and geared frames. It is also compatible with dropper posts.
The rear end is Gnot-Boost compatible with the same three hub sizes as the KARATE MONKEY and KRAMPUS, and tire clearance is 26x3" or 27.5x2.8". The front fork can be replaced with a 100 mm stroke suspension.
[SPEC]
Material: 4130 Chromoly, Natch tubing
Column: 1-1/8inch (28.6mm)
Seat post diameter: 30.9mm
Seat clamp diameter: 33.1mm
Front end width: 15x110mm (Surly axle included)
Rear end width: "Gnot-Boost" 145mm
12 x 142mm or 12 x 148mm (Surly axle included)
10 x 135mm with Surly 10/12 Adapter Washers (not included)
Tire clearance: 26x3.0inch / 27.5x2.8inch
Bottom bracket: 73mm / BSA
[GEOMETRY]
| Frame Size | XS | S | M | L | XL |
| Reach | 414.5 | 429.3 | 445.3 | 461 | 477 |
| Stack | 542.2 | 560.3 | 574.4 | 588.5 | 588.5 602.5 |
| Head Tube Angle |
Head Tube Angle |
70.0° Head Tube Angle |
70.0° Head Tube Angle |
70.0° Head Tube Angle |
70.0° Head Tube Length |
| Head Tube Length | 110 | Head Tube Length 110 | Head Tube Length 110 125 | 155 | Seat Tube Length |
| Seat Tube Length | Seat Tube Length | Seat Tube Length | Seat Tube Length | Seat Tube Length | Seat Tube Length |
| BB Drop | 55 | 55 | 55 | 55 55 | 55 55 55 |
| Wheelbase | 1068 | 1068 | 1110 | 1131 | Chainstay Length |
| Chainstay Length | 425 | 425 | 425 425 | 425 425 | Top Tube Length, Actual |
| Top Tube Length, Actual | Top Tube Length, Actual | 575.6 | 589.7 | 608.5 | Top Tube Length, Effective |
| Top Tube Length, Effective | Top Tube Length, Effective | Top Tube Length, Effective 570 | Top Tube Length, Effective | 630.4 Top Tube Length, Effective | Seat Tube Angle |
| Seat Tube Angle | 6° Seat Tube Angle | 6° | 6° | 6° | 6° |
| Standover Height | 700 | 729 | 762 | 792 | Fork Length |
| Fork Length | 420 | 420 | 420 | 420 | Fork Rake |
| Fork Rake | 47 | 47 | 47 47 | 47 47 | 47 47 47 |