Lowside - New Pig Smell
Lowside - New Pig Smell
Singlespeeding – Singletrack – Pumptrack
Warning for Residents of California
Warning for Residents of California
⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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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
Specifications
Build Kit
Frameset
Frame
Surly Lowside - 4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, ED coated
Color
New Pig Smell
Fork
Surly Lowside - 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
Components
Headset
Cane Creek
Seatpost Clamp
Surly Stainless 33.1mm clamp
Seatpost
Promax SP-2019, 0 Offset, 30.9mm diameter
Stem
Sunday Freeze Stem Top Load
Grips/Bar Tape
Velo Black Lock-On
Saddle
WTB Volt
Handlebar
Surly Sunrise
Drivetrain
Front Derailleur
N/A
Rear Derailleur
N/A
Cassette
Surly 17t w/ spacer kit
Chain
KMC X10
Crankset
SRAM NX 32t
Shifter
N/A
Brake Levers
Tektro HD-M275 (Tektro HD-M276 on XS)
Brake Calipers
Tektro HD-M275 (Tektro HD-M276 on XS)
Bottom Bracket
SRAM Powerspline
Rotors
Tektro 160/160, 6-Bolt
Wheels
Front Tire
Surly Dirt Wizard 26 x 3.0", 60tpi
Rear Tire
Surly Dirt Wizard 26 x 3.0", 60tpi
Front Hub
Novatec 15 x 110mm, 6-bolt, 32h
Rear Hub
Novatec 12 x 148mm, 6-bolt, 32h
Spoke
14G Black
Rim
ALEX MD40 26"
Weight
Complete Bike
31 lb. 6 oz. for Medium
*Specifications are subject to change without notice
Geometry

Size | X-Small | Small | Medium | Large | X-Large |
---|---|---|---|---|---|
A. Effective Top Tube | 570.0 | 590.0 | 610.0 | 630.0 | 650.0 |
B. Stand Over | 700.0 | 729.0 | 762.0 | 792.0 | 823.0 |
C. Reach | 414.5 | 429.3 | 445.3 | 461.0 | 477.0 |
D. Stack | 542.2 | 560.3 | 574.4 | 588.5 | 602.5 |
E. Total Seat Tube Length | 316.0 | 366.0 | 416.0 | 466.0 | 516.0 |
F. Headtube Length | 110.0 | 125.0 | 140.0 | 155.0 | 170.0 |
G. Headtube Angle |
70.0
|
70.0
|
70.0
|
70.0
|
70.0
|
H. Seat Tube Angle |
74.0
|
74.0
|
74.0
|
74.0
|
74.0
|
I. BB Drop | 55.0 | 55.0 | 55.0 | 55.0 | 55.0 |
K. Chainstay Length | 425.0 | 425.0 | 425.0 | 425.0 | 425.0 |
L. Fork Length Axle to Crown | 420.0 | 420.0 | 420.0 | 420.0 | 420.0 |
M. Fork Offset | 47.0 | 47.0 | 47.0 | 47.0 | 47.0 |
N. Wheelbase | 1068.0 | 1089.0 | 1110.0 | 1131.0 | 1152.0 |
Crank Arm Length | 170.0 | 170.0 | 175.0 | 175.0 | 175.0 |
Handlebar Width | 820.0 | 820.0 | 820.0 | 820.0 | 820.0 |
Recommended Rider Height | 142.0 - 151.0 | 152.0 - 164.0 | 165.0 - 174.0 | 175.0 - 184.0 | 185.0 |
Stem Length | 52.0 | 52.0 | 52.0 | 52.0 | 52.0 |
Frame Specs
- Design Wheel/Tire Sizes 26 x 3.0"
- Alternate Wheel/Tire Sizes 27.5 x 2.8"
- 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
- Suspension Fork Length (Travel) 490 x 47mm (26 100mm)
- Rigid Fork Length 420mm
- Fork Offset 47mm
- Axle to Crown 420mm
- Rear Spacing "Gnot-Boost" 145mm
- Rear Axle Size 12 x 142mm or 12 x 148mm (Surly axle included) / 10 x 135mm with Surly 10/12 Adapter Washers (not included)
- Front Brake (Rotor) Disc - 51mm I.S. (203mm max rotor)
- Headset - Upper ZS44/28.6
- Headset - Lower EC44/30
- Front Spacing 15 x 110mm
- Steerer Tube Ø28.6mm (1-1/8")
- Crown Race Ø30mm (1-1/8")
- Stem Clamp Ø28.6mm (1-1/8")
- Seatpost Ø30.9mm
- Dropper Post Compatible Yes
- Seatpost Clamp Ø33.1mm
- Front Derailleur Clamp Ø34.9mm
- Front Derailleur Type 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
- Bottom Bracket 73mm threaded (1.37" x 24TPI)
- Crankset (Max Ring) 1x (Mtn): 33T / 1x (Boost): 36T
- Bottle Mounts 1 Standard
- Fork Mounts N/A
- Front Fender Mounts N/A
- Rear Fender Mounts N/A
Warranty
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.




