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Surly Preamble Frameset

Surly Preamble Frameset
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Steel Commuter and Gravel Bike

Preamble is a hard-boiled steel commuter built for comfort, durability, and buffoonery on pavement and gravel.

Nothing More is Needed. Nothing Less Will Do.
The challenge was thus: Build a serious steel bike and give it only the attributes that matter most. Make it quick and comfortable on pavement, as well as confident and compliant on degraded surfaces. What the Enginerds put forth is Preamble, a pavement and gravel utility worker that proves you don't need to cut corners or clip coupons to make a more affordable steel bike. You just need to keep shit simple.

Preamble can run racks and fenders and carry a couple water bottles. Surly was raised on stealing basic cable, after all. Smooth and efficient on asphalt, Preamble's double-butted main triangle provides a resplendent ride feel and withstands abuse from life's inevitable potholes. Make it your own with flat bars, drop bars, a basket, or bags. On the road to steel euphoria, Preamble is the gateway drug.

Let facts be submitted to a candid world:

- Offered in flat-bar and drop-bar configurations
- Easy T-Shirt sizing to fit nearly every rider (XS, S, M, L, XL)
- Sloping top tubes on XS and Small frames for improved standover and comfort
- To offer the best rider experience for every frame size, XS and S frames get 650b wheelsets while M–XL get 700c
- Custom-cast single-position vertical dropout

[mm] [mm] [mm] [mm] [mm]
Seat Tube Length 410.0mm 505.0mm 565.0mm 605.0mm 645.0mm
Top Tube Length (Effective) 500.0mm 545.0mm 570.0mm 600.0mm 630.0mm
Head Tube Angle 70.0° 71.0° 72.0° 72.0° 72.0°
Seat Tube Angle 74.0° 73.0° 72.5° 72.0° 72.0°
BB Drop 54.0mm 54.0mm 66.0mm 66.0mm 66.0mm
Chainstay Length 420.0mm 420.0mm 435.0mm 435.0mm 435.0mm
Wheelbase 987.0mm 1013.0mm 1030.0mm 1055.0mm 1085.0mm
Standover Height 722.0mm 776.0mm 826.0mm 863.0mm 901.0mm
Head Tube Length 120.0mm 135.0mm 130.0mm 170.0mm 210.0mm
Fork Length 380.0mm 380.0mm 400.0mm 400.0mm 400.0mm
Fork Rake 47.0mm 47.0mm 44.0mm 44.0mm 44.0mm
Stack 517.0mm 535.0mm 567.0mm 605.0mm 643.0mm
Reach 352.0mm 381.0mm 391.0mm 404.0mm 421.0mm
Stem Length 80mm 80mm 90mm 100mm 100mm
Stem Angle
Handlebar Width 380mm 400mm 420mm 440mm 460mm
Crank Length 165mm 170mm 170mm 175mm 175mm
Height 5'4" - 5'8" 5'7" - 6'0" 5'11" - 6'3" 6'2" - 6'7"

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

WARNING: Cycling can be dangerous. Bicycles and bicycle products should be assembled and serviced by a professional mechanic. Never modify your bicycle or accessories. Read and follow all product instructions and warnings including information on the manufacturer’s website. Inspect your bicycle before every use. Always wear a helmet.


Frame 100% Surly Chromoly Steel, Natch tubing, double-butted main triandle, TIG welded, E.D. coated
Fork Surly Preamble, 100% Chromoly steel fork, Disc Only
Bottom Bracket 68mm BSA, threaded
Brakes 51mm IS (160-180)
Accessories & Extras Fork crown and mid-blade rack mounts and fender mounts

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Thorfrost White / X-Small 708752417014 FM2270 SUR45631697L
Thorfrost White / Small 708752417038 FM2271 SUR44364952L
Thorfrost White / Medium 708752417052 FM2272 SUR45982893M
Thorfrost White / Large 708752417076 FM2273 SUR44266243E
Thorfrost White / X-Large 708752417090 FM2274 SUR45443154E
Black / X-Small 708752417113 FM2275 SUR36677150L
Black / Small 708752417137 FM2276 SUR35555312L
Black / Medium 708752417151 FM2277 SUR36832137M
Black / Large 708752417175 FM2278 SUR35141915E
Black / X-Large 708752417199 FM2279 SUR36454463E
Skyrim Blue / X-Small 708752417212 FM2280 SUR41629732L
Skyrim Blue / Small 708752417236 FM2281 SUR40352772L
Skyrim Blue / Medium 708752417250 FM2282 SUR41725543M
Skyrim Blue / Large 708752417274 FM2283 SUR40121782E
Skyrim Blue / X-Large 708752417298 FM2284 SUR41235719E