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1x1 Frame

The world has changed a lot since we first introduced the 1x1. For one thing, single-speeding went from new kid on the block to quarterback of the varsity squad. Coincidence? We don’t think so. And yet the 1x1 itself has changed very little. Sure, we added I.S. disc tabs because disc brakes work good, and we gave it heat-treated chain stays and butted the fork blades to make it even stronger, but overall the 1x1 is the same kick-ass dedicated single-speed frame it’s always been. That’s because it does what it does very well.

The frame and fork are Surly 4130 CroMoly. It’s suspension corrected to accept a (now) short-travel suspension fork (80mm). The fork and stays are wide and curvy and offer lots of space for fat shoes—26 x 2.7" knobbies will fit with room to spare. By the way, even after all these years, this is still more clearance than almost any other bike of its type. Fat tires offer the best traction and comfort, plus wide stays give you the option of running fat or skinny tires, and we like versatility. The geometry is comprised of tried-and-true, rides-like-a-bike numbers, but spec charts can’t do justice to the ride, which is, in a word, sublime. Or if you want a few more words, our pal Muga from Kyoto wrote not too long ago and said, “I hope I am not self-indulgent. If so, that is caused by my love of Surly. And you are the one to blame because you have created 1x1 that makes me crazy.” We feel the same way.

Colors: Punkin' Orange, Cash Black

Geometry

Switch to mm x-small small medium large x-large  
Seat Tube Length
(Center-Top)
14.0 16.0 18.0 20.0 22.0
Top Tube Length
(Center-Center)
20.5 21.3 22.3 23.1 23.9  
Effective Top Tube Length
(Center-Center)
21.5 22.2 23.0 23.6 24.2  
Head Tube Angle 71.0 71.0 71.0 71.0 71.0  
Seat Tube Angle 73.0 73.0 73.0 73.0 73.0  
BB Drop 1.7 1.7 1.7 1.7 1.7  
Chainstay Length 16.5 16.5 16.5 16.5 16.5  
Wheelbase 39.9 40.7 41.5 42.1 42.7  
Standover Height 28.1 29.2 30.5 31.8 33.1  
Head Tube Length 3.5 4.0 4.5 5.3 6.3  
Fork Length 16.3 16.3 16.3 16.3 16.3  
Fork Rake 1.8 1.8 1.8 1.8 1.8  
Frame Weight 4.20 4.42 4.96 5.00 5.40  

Measurements use tire with diameter of 676mm (Tioga 2.1 DH), and taken from middle of toptube to level ground

Switch to inches x-small small medium large x-large
Seat Tube Length
(Center-Top)
355.6 406.4 457.2 508.8 558.8  
Top Tube Length
(Center-Center)
521.2 541.6 565.8 586.5 608.3  
Effective Top Tube Length
(Center-Center)
545.0 565.0 585.0 600.0 615.0  
Head Tube Angle 71.0 71.0 71.0 71.0 71.0  
Seat Tube Angle 73.0 73.0 73.0 73.0 73.0  
BB Drop 42.5 42.5 42.5 42.5 42.5  
Chainstay Length 419.0 419.0 419.0 419.0 419.0  
Wheelbase 1013.5 1034.0 1054.3 1070.1 1085.8  
Standover Height 714.9 742.9 773.8 806.9 841.6  
Head Tube Length 89.0 102.0 114.0 134.0 159.0  
Fork Length 413.0 413.0 413.0 413.0 413.0  
Fork Rake 45.0 45.0 45.0 45.0 45.0  
Frame Weight 4.20 4.42 4.96 5.00 5.40  

Measurements use tire with diameter of 676mm (Tioga 2.1 DH), and taken from middle of toptube to level ground




Frame Highlights

Tubing100% CroMoly steel. Main triangle double-butted. TIG-welded
Rear dropoutsInvestment cast Surly track dropouts, 135mm spaced
Braze-onsI.S. disc tabs and removable cantilever bosses front and rear, fender eyelets front and rear, and dual water-bottle mounts
Seatpost diameter27.2mm
Seatpost clamp diameter30.0mm, Surly Constrictor included
Headset1-1/8" threadless
Bottom bracket shell73mm wide, threaded English 1.37x24t
Tire clearanceFatties Fit Fine (FFF) chainstays and our custom fork give room for tires up to 2.7" with plenty of mud and fender clearance left over. Seriously!
ForkSuspension corrected for 80mm travel suspension fork. 100% CroMoly
ColorPunkin' Orange or Cash Black
Weight18" = 5.0 lbs (2.3 kg) Fork - uncut = 2.34 lbs (1.1 kg)