The infamous Swift frameset. Featuring double oversize tig welded tubing, carbon forks and our custom Brother polished stainless steel track dropouts. The aggressive track geometry gives the Swift a nimble and responsive ride making it an effective race bike on the street or track.


Frame Specs



Tubing: Double oversize butted cr-mo tubing
Forks: 3k carbon/alloy fork
Dropouts: Stainless 'Brother' dropouts
120mm rear spacing
Brake compatibility: Medium drop brake caliper
Headset: 1 1/8" threadless steerer/headset
Bottom bracket shell: 68mm bottom bracket - ISO threaded
Seat post diameter: 27.2mm
Seat clamp diameter: 30mm
Maximum tyre clearance: 28c
Frame weight: 54cm = 2.0kg
Fork weight: Uncut = 600g

Swift technical drawing
Size (C-TT)52cm54cm56cm58cm60cm
Seat Tube (C-C)505mm525mm545mm565mm585mm
Top Tube530mm545mm555mm565mm580mm
Head Tube107mm125mm144mm164mm182mm
Head Angle747474.574.574.5
Seat Angle7574.574.574.574
BB Drop58mm58mm58mm58mm58mm
Fork Length (A-C)370mm370mm370mm370mm370mm
Fork Rake35mm35mm35mm35mm35mm

Are your frames guaranteed?

Our frames are fully guaranteed against manufacturing and materials faults or defects for 12 months from date of purchase. This guarantee does not cover items which are damaged through accident, misuse, wear and tear, neglect or those which have been repaired or altered by any other firm. Paintwork is not covered covered by this warranty, nor is any damage that happens to you or your other components as a result of any failure of one of our products.

This guarantee is only valid to the original customer and is non-transferable. We reserve the right to an independent opinion on whether the goods qualify for a refund. A dated proof of purchase must be provided before a warranty claim will be considered.

Can you build me a custom bike?

Sorry we don’t do custom builds, but you can contact one of our many stockists for assistance in building up a bike.

Where are your frames stocked?

You can see a list of shops where our frames are stocked here. If your LBS isn’t listed then ask them to get in touch with us about ordering a frame for you.

Where are your frames made?

Our frames are made in Taiwan. They are handmade using traditional brazing and welding techniques with the highest quality materials by a team of frame builders who have over 2 decades of experience. Each frame undergoes extensive quality and safety checks before it is shipped to us in the UK. Although built overseas our frames were carefully designed by us in London and are exclusive to Brother Cycles.