Brother Swift

Brother Swift Track Frame

The infamous Swift track frame is back – featuring double oversize tig welded tubing and an aggressive track geometry. Updates for the 2018 version include a 44mm headtube and tapered carbon forks. All this creates a fast and responsive ride making the Swift an effective race frame for the street, track or crit. Brother first released the Swift back in 2013. In this time it’s developed into one of the go-to steel fixed gear/track frames that’s been tried and tested in crit races, alleycats and on the track all around the world.


Tubing: Double oversize butted cr-mo tubing
Forks: 3k carbon/alloy fork
Dropouts: Stainless 'Brother' dropouts
120mm rear spacing
Brake compatibility: Short drop brake caliper
Headset: 44mm, SHIS ZS44/28.6 upper, EC44/40 lower (not included)
Bottom bracket shell: 68mm bottom bracket - ISO threaded
Seat post diameter: 27.2mm
Seat clamp diameter: 30mm (included)
Maximum tyre clearance: 28c
Frame weight: 54cm = 2.0kg
Fork weight: Uncut = 625g
Tested to ISO 4210 standard

Size (C-TT) 52cm 54cm 56cm 58cm 60cm
Seat Tube (C-C) 505mm 525mm 545mm 565mm 585mm
Top Tube 530mm 545mm 555mm 565mm 580mm
Head Tube 107mm 125mm 144mm 164mm 182mm
Head Angle 74 74 74.5 74.5 74.5
Seat Angle 75 74.5 74.5 74.5 74
BB Drop 58mm 58mm 58mm 58mm 58mm
Chainstay 387mm 388mm 388mm 388mm 390mm
Fork Length (A-C) 370mm 370mm 370mm 370mm 370mm
Fork Rake 35mm 35mm 35mm 35mm 35mm
Wheelbase 942mm 953mm 959mm 969mm 981mm