Surly Bikes
Bikes. Parts. Chaos.
Lowside
Single Speed Mountain Bike
* Manufacturer's suggested retail price may not include additional shipping or preparation charges. Please contact your local dealer for a quote.
$1499 USD / $2149 CAD
*
Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out.
Your BMX Bike All Grown Up
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 1x1 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 1x1 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
Bike Capabilities
- 5/5 with Single Track Single Track: 5 out of 5
- 5/5 with Alley Exploration Alley Exploration: 5 out of 5
- 5/5 with Homemade Jumps Homemade Jumps: 5 out of 5
- 5/5 with Pub Cruising Pub Cruising: 5 out of 5
NOTE: You can ride your bike wherever the hell you want, but this is what we think this bike is best at.
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Where to Buy
Specifications
Frameset
- Frame
-
4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
- Fork
-
4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
- Seatpost Clamp
- Surly Stainless 33.1mm clamp
Components
- Headset
- Cane Creek
- Brakes
- Tektro Hydro M275/276
- Brake Levers
- Tektro
- Rotors
- Tektro 160/160mm
- Shifters
- N/A
- Stem
- Sunday Freeze top load 22.2mm clamp
- Handlebar
- Surly Sunrise
- Grip/Tape
- Velo Black
- Saddle
- WTB Volt
- Seatpost
- Promax SP-2019, 0 Offset
Drivetrain
- Crankset
- SRAM NX 32t
- Bottom Bracket
- SRAM PS
- Front Derailleur
- N/A
- Rear derailleur
- N/A
- Cog or cogset
- Surly 17t w/ spacer kit
- Chain
- KMC X10
Wheels
- Front Hub
- Novatec 15 x 110mm, 6-bolt, 32h
- Rear Hub
- Novatec 12 x 148mm, 6-bolt, 32h
- Spokes
- 14G
- Rims
- ALEX MD40 26"
- Tires
- Surly Dirt Wizard 26x3 60tpi
- Complete Bike Weight
- 31.6 lbs for Medium
Frameset
- Frame
-
4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
- Fork
-
4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
- Seatpost Clamp
- Surly Stainless 33.1mm clamp
Components
- Headset
- Cane Creek
- Brakes
- Tektro Hydro M275/276
- Brake Levers
- Tektro
- Rotors
- Tektro 160/160mm
- Shifters
- N/A
- Stem
- Sunday Freeze top load 22.2mm clamp
- Handlebar
- Surly Sunrise
- Grip/Tape
- Velo Black
- Saddle
- Selle Italia Black
- Seatpost
- 2 Bolt, 30.9mm
Drivetrain
- Crankset
- SRAM NX 32t
- Bottom Bracket
- SRAM PS
- Front Derailleur
- N/A
- Rear derailleur
- N/A
- Cog or cogset
- Surly 17t w/ spacer kit
- Chain
- KMC X10
Wheels
- Front Hub
- Novatec 15x110
- Rear Hub
- Novatec 12x148
- Rims
- WTB ST i35 TCS
- Tires
- Maxxis Rekon+ 27.5x2.8 60tpi
Complete bike spec subject to change
units:
Select a few bike sizes to compare.
| SIZE | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Rider Height | 4'8"+ 1.42m+ | 5'0"+ 1.52m+ | 5'5"+ 1.65m+ | 5'9"+ 1.75m+ | 6'0"+ 1.85m+ |
| Reach | 16.3 414.5 | 16.9 429.3 | 17.5 445.3 | 18.1 461.0 | 18.8 477.0 |
| Stack | 21.3 542.2 | 22.1 560.3 | 22.6 574.4 | 23.2 588.5 | 23.7 602.5 |
| Head Tube Angle | 70.0° | 70.0° | 70.0° | 70.0° | 70.0° |
| Head Tube Length | 4.3 110.0 | 4.9 125.0 | 5.5 140.0 | 6.1 155.0 | 6.7 170.0 |
| Seat Tube Length | 12.4 316.0 | 14.4 366.0 | 16.4 416.0 | 18.3 466.0 | 20.3 516.0 |
| BB Drop | 2.2 55.0 | 2.2 55.0 | 2.2 55.0 | 2.2 55.0 | 2.2 55.0 |
| Wheelbase | 42.0 1068.0 | 42.9 1089.0 | 43.7 1110.0 | 44.5 1131.0 | 45.4 1152.0 |
| Chainstay Length | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 |
| Top Tube Length, Actual | 22.1 562.4 | 22.7 575.6 | 23.2 589.7 | 24.0 608.5 | 24.8 630.4 |
| Top Tube Length, Effective | 22.4 570.0 | 23.2 590.0 | 24.0 610.0 | 24.8 630.0 | 25.6 650.0 |
| Seat Tube Angle | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° |
| Standover Height | 27.6 700.0 | 28.7 729.0 | 30.0 762.0 | 31.2 792.0 | 32.4 823.0 |
| Stem Length | 52 | 52 | 52 | 52 | 52 |
| Stem Angle | 34mm rise° | 34mm rise° | 34mm rise° | 34mm rise° | 34mm rise° |
| Handlebar Width | 32.2 820 | 32.2 820 | 32.2 820 | 32.2 820 | 32.2 820 |
| Crank Length | 6.7 170 | 6.7 170 | 6.9 175 | 6.9 175 | 6.9 175 |
| Fork Length | 16.5 420 | 16.5 420 | 16.5 420 | 16.5 420 | 16.5 420 |
| Fork Rake | 1.9 47.0 | 1.9 47.0 | 1.9 47.0 | 1.9 47.0 | 1.9 47.0 |
Select a few bike sizes to compare.
| SIZE | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Rider Height | 4'8"+ 1.42m+ | 5'0"+ 1.52m+ | 5'5"+ 1.65m+ | 5'9"+ 1.75m+ | 6'0"+ 1.85m+ |
| Reach | 15.3 388.0 | 15.9 403.7 | 16.5 419.5 | 17.1 435.5 | 17.8 451.0 |
| Stack | 22.2 564.5 | 22.8 579.8 | 23.4 593.5 | 23.9 608.0 | 24.5 622.0 |
| Head Tube Angle | 67.3° | 67.4° | 67.5° | 67.5° | 67.6° |
| Head Tube Length | 4.3 110.0 | 4.9 125.0 | 5.5 140.0 | 6.1 155.0 | 6.7 170.0 |
| Seat Tube Length | 12.4 316.0 | 14.4 366.0 | 16.4 416.0 | 18.3 466.0 | 20.3 516.0 |
| BB Drop | 1.4 35.6 | 1.4 36.0 | 1.4 36.4 | 1.4 36.7 | 1.5 37.0 |
| Wheelbase | 42.4 1077.0 | 43.2 1098.0 | 44.1 1119.5 | 44.9 1140.5 | 45.7 1161.5 |
| Chainstay Length | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 |
| Top Tube Length, Actual | 22.1 562.4 | 22.7 575.6 | 23.2 589.7 | 24.0 608.5 | 24.8 630.4 |
| Top Tube Length, Effective | 22.8 578.0 | 23.5 598.0 | 24.3 618.0 | 25.1 638.0 | 25.9 658.0 |
| Seat Tube Angle | 71.4° | 71.4° | 71.5° | 71.5° | 71.6° |
| Standover Height | 28.7 729.0 | 29.7 755.0 | 31.0 787.0 | 32.2 817.0 | 33.4 848.5 |
| Stem Length | 2.36 60 | 2.36 60 | 2.36 60 | 2.36 60 | 2.36 60 |
| Stem Angle | 6° | 6° | 6° | 6° | 6° |
| Handlebar Width | 32.2 820 | 32.2 820 | 32.2 820 | 32.2 820 | 32.2 820 |
| Crank Length | 6.7 170 | 6.7 170 | 6.9 175 | 6.9 175 | 6.9 175 |
| Fork Length | 18.4 468.0 | 18.4 468.0 | 18.4 468.0 | 18.4 468.0 | 18.4 468.0 |
| Fork Rake | 1.7 42.0 | 1.7 42.0 | 1.7 42.0 | 1.7 42.0 | 1.7 42.0 |
- 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
[1] Different tire and rim combinations will result in different clearances.
[2] Depending on drivetrain configuration, tire clearance may be limited by the chain and not the frame.
[3] Listed chainring clearance is worst case scenario. Clearances vary widely depending on components and configurations.
[4] Suspension fork length listed at full extension (not at sag)
Support
Downloads
- Lowside Frame Sheet
[pdf] - 1.5MB - Lowside Fork Instructions
[pdf] - 6.9MB - Surly Bike Sizing Chart
[pdf] - 308KB - Sunrise Handlebar Instructions
[pdf] - 520KB - Snuggnut Instructions
[pdf] - 258KB - Wheel, Rim, and Tire Instructions
[pdf] - 672KB - Bicycle Owner’s Manual (English)
[pdf] - 1.2MB
Frame Warranty
LIMITED WARRANTY
This Surly product is warranted against defects in materials and workmanship for three years from the date of retail purchase of the product, subject to the limitations detailed below. Save your dated receipt for proof of purchase.
This warranty does NOT cover the following:
- Damage due to improper assembly or follow-up maintenance or lack of skill, competence or experience of the user or assembler
- Products that have been modified, neglected, used in competition or for commercial purposes, misused or abused, involved in accidents or anything other than normal use
- Installation of components, parts or accessories not originally intended for or compatible with bicycle as sold
- Damage or deterioration to the paint, surface finish, aesthetics or appearance of the product
- Normal wear and tear
- Labor required to remove and/or refit and re-adjust the product within the bicycle assembly
This limited warranty is expressly limited to the repair or replacement of a defective product, at the option of Surly, and is the sole remedy of the warranty. This limited warranty applies only to the original purchaser of the Surly product and is not transferrable. This warranty applies only to products purchased through an authorized dealer or distributor. In no event shall Surly be liable for any loss, inconvenience or damage, whether direct, incidental, consequential, or otherwise resulting from breach of any express or implied warranty or condition, of merchantability, fitness for a particular purpose, or otherwise with respect to our products except as set forth herein.
This limited warranty gives the consumer specific legal rights, and those rights and other rights may vary from place to place. This limited warranty does not affect your statutory rights.
TO THE EXTENT NOT PROHIBITED BY LAW, THESE WARRANTIES ARE EXCLUSIVE AND THERE ARE NO OTHER EXPRESS OR IMPLIED WARRANTIES OR CONDITIONS INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.