Bikes. Parts. Chaos.

Steamroller is a dedicated single speed road bike that can handle potholes, grass shortcuts, urban trails, and back alleys like a champ.

Steamroller is the bicycle in its simplest form. While it often gets compared to track bikes, it’s much more than that. Built to excel on crumbling city streets, its beefy tire clearance makes it a great choice for minimalist commuters as well as dedicated winter commuters who know the havoc road salt wreaks on drivetrains.

As one of the first models we ever produced, Steamroller is truly like a member of the family. And we’re talking one we actually like, not your weird Uncle Norman who insists on showing you his magic tricks while always finding a way to ruin Thanksgiving.

  • Investment cast Surly track dropouts spaced at 120mm
  • Fender eyelets on the rear and one set of water bottle mounts on the seat tube
  • Clearance for 700c x 38mm tires

Bike Capabilities

  • 4/5 with Commuting
  • 1/5 with Shifting
  • 5/5 with Pavement
  • 4/5 with Alley Exploration

NOTE: You can ride your bike wherever the hell you want, but this is what we think this bike is best at.

Steamroller Fixed Gear
Steamroller Headtube Detail
Steamroller Uphill
Steamroller Frame
Steamroller in the City
Steamroller Top Tube / Decal Close-Up
Steamroller in Alleyway
Steamroller Fork Crown Detail
Steamroller Seat Tube Detail
Steamroller Rear Dropout Detail
Steamroller Fork Dropout Detail

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Where to Buy

Surly Steamroller Frameset - Ministry Gray

Specifications

Steamroller Geometry
units:
  • in
  • mm
49cm 53cm 56cm 59cm 62cm
Reach 15.3 388.1 15.5 394.0 15.8 402.3 16.1 408.2 16.6 420.6
Stack 19.9 504.9 20.9 531.3 22.0 558.8 23.1 586.4 24.3 618.1
Head Tube Angle 72.5° 73.0° 73.5° 74.0° 74.0°
Head Tube Length 3.3 83.0 4.3 109.0 5.4 136.0 6.4 163.0 7.7 196.0
Seat Tube Length 19.3 490.0 20.9 530.0 22.0 560.0 23.2 590.0 24.4 620.0
BB Drop 2.8 70.0 2.8 70.0 2.8 70.0 2.8 70.0 2.8 70.0
Wheelbase 38.0 965.7 38.1 966.6 38.5 978.6 38.9 988.1 39.7 1009.1
Chainstay Length 15.7 398.0 15.7 398.0 15.7 398.0 15.7 398.0 15.7 398.0
Top Tube Length, Actual 20.7 526.5 21.5 547.0 22.4 568.0 23.1 587.0 23.9 608.0
Top Tube Length, Effective 20.8 529.5 21.5 547.0 22.4 568.0 23.1 587.0 23.9 608.0
Seat Tube Angle 74.5° 74.0° 73.5° 73.0° 73.0°
Standover Height 29.5 748.5 30.7 780.5 31.8 807.9 32.9 835.2 34.1 865.3
Stem Length N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Stem Angle N/A° N/A° N/A° N/A° N/A°
Handlebar Width N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Crank Length N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Fork Length 14.8 375.0 14.8 375.0 14.8 375.0 14.8 375.0 14.8 375.0
Fork Rake 1.5 38.0 1.5 38.0 1.5 38.0 1.5 38.0 1..5 38.0

* Standover is measured from the top of the TT, at the center, with a tire measuring approximately Ø682mm

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, brazed lugs, ED coated

Rear Dropout Configuration

Horizontal

Rear Hub Spacing

10 x 120mm

Front Hub Spacing

9 x 100mm

Rear Brake

Rim - Caliper (mid reach)

Front Brake

Rim - Caliper (mid reach)

Head Tube

Ø34mm

Steerer Tube

Ø28.6mm (1-1/8")

Crown Race

Ø30mm (1-1/8")

Stock Headset Upper (S.H.I.S.)

EC34/28.6

Stock Headset Lower (S.H.I.S.)

EC34/30

Seat Collar

Ø30mm

Seat Post

Ø27.2mm

Front Derailleur (Clamp)

N/A

Max Chainring (CL)[3]

1x (Track): 50T

Bottom Bracket

68mm threaded (1.37" x 24TPI)

Tire Clearance Frame [1]/[2]

700c x 32mm (w/ fenders)

700c x 38mm (w/o fenders)

Tire Clearance Fork [1]

700c x 32mm (w/ fenders)

700c x 38mm (w/o fenders)

Rigid Fork Spec

375 x 38mm

Max Suspension Fork Length [4]

N/A

Bottle Mounts Frame

1 Standard

Bottle Mounts Fork

N/A

Rack Mounts Frame

N/A

Rack Mounts Fork

N/A

Fender Mounts Frame

Yes

Fender Mounts Fork

N/A

[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 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) 

FAQ & Reviews

Support

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.