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On-One Pompino V4 Frameset


There’s something different about the Pompino this time around, the drawing board has been dusted off and revisions made. Taking the lead from the Kaffenback, seat angles have been steepened, nudging you a bit more forward and making things more aggressive overall. The rear has been smoothed out with a dual seat stay in place of the wishbone of old, and the rear canti hanger removed in favour of classic lines.

The 120mm track standard rear spacing remains, as does the 42mm chainline for that tight, sharp handling feel. Brake-wise the canti remains king, although a mini-v set-up will serve you equally as well.

Aside from being a proper workhorse when called upon, the longevity of the Pomp is down to its ability to put a smile on your face with the bare minimum of fuss, be that through singlespeed ‘cross, fixed wheel commuting or stripped back, bare bones touring.

Frame Details

Frame MaterialDN6 double butted 4130 chromoly steel
Approx. Frame Weight (g)Frame: 2.21Kg / Fork: 950g (Medium)
Seatpost Size (mm)27.2
Seat Clamp Size (mm)29.8
Mudguard mountsYes
Rack MountsYes
Bottle Cage Bosses2 set
Brake CompatibilityCantilever or Mini-V
Max Tyre Size700x32c tyres (35c slick tyres will also fit )
DropoutsRear Facing Horizontal
Rear Spacing120mm (Track Standard)
Bottom Bracket shell68mm, English threaded


Sizing Guide

As our frame geometry is COMPACT you need to knock 3cm off “conventional” frame sizes. If you want a longer frame, you can go up a frame size without ruining yourself on the top tube.

Rider HeightSuggested Frame Size
5′1″ to 5′6″ (155-167cm)S (48cm)
5′5″ to 5′10″ (165-178cm)M (51cm)
5′9″ to 6′1″ (175-185cm)L (54cm)
6′ to 6′4″ (183-193cm)XL (57cm)