seabass-cycles-instore-11-12-2018-0022.jpg

Brother Cycles Frames

"Our frames are designed by us in London and are exclusive to Brother Cycles. They are handmade by experienced frame builders out of the best materials, ensuring a high quality product designed to be ridden all day, every day – whether in the city, on the track or out in the wild."

For enquiries please call our stores or email: hello@seabasscycles.co.uk

 

Big Bro


The frame is made out of tough 4130 double butted cro-mo tubing and comes with 100mm suspension corrected forks. There’s now clearance for big 3 inch tyres on 27.5+ wheels or up to 2.4 inch tyres if you’d prefer a 29er. It features bottle mounts on the seat tube, down tube and under the down tube for an extra bottle or storage. The forks also feature triple bottle mounts to fit further bottle cages or Anything Cages. Both the fork and frame also allow the use of a fender and pannier rack. S-bend chainstays with replaceable alloy sliding dropouts allow for geared or singlespeed setups.


Tubing: - 4130 Chromoly steel - double-butted main triangle
Brake compatibility; 51mm IS disc brake mount, 180mm max rotor size
Dropouts: Vertical, 135mm O.L.D sliding Quick Release dropouts (optional 12x142mm Thru Axle plates available separately)
Seat post diameter: 30.9mm
Seat clamp diameter: 33.1mm (included)
Headset: 44mm, SHIS ZS44/28.6 upper, EC44/40 lower (not included)
Front derailleur clamp diameter: 34.9 mm high direct-mount (adapter available separately)
Bottom bracket shell: 73mm bottom bracket, ISO threaded
Maximum tyre clearance: 29" x 2.4", 27.5" x 3.0"
Fork : 4130 Chromoly tapered unicrown fork, disc only
Full-length cable housing guides for derailleurs and brakes
3 sets bottle cage mounts on all sizes
Chainring clearance: up to 48-36-26t triple, 42-28t double, 38t single
Weight: medium (18") frame 2.6kg, fork (260mm steerer) 1.25kg


All Day


Tubing: 4130 Chromoly steel - double-butted main triangle
Brake compatibility: Medium drop brake calliper
Dropouts: Investment cast 120mm spaced dropouts
Threaded dropout adjusters
Seat post diameter: 27.2mm
Headset: 1 1/8˝ threadless steerer/headset (not included)
Bottom bracket shell: 68mm bottom bracket - ISO threaded
Maximum tyre clearance: 700c x 35mm
Fork: Lugged flat crown
Frame weight: 54cm = 2.0kg
Fork weight: Uncut = 950g

Kepler Disc

This is the disc brake version of the all-purpose, all-road steel adventure frame. Designed to take on whatever challenge is thrown at it – whether that’s thrashing along gravel trails, a weekend bike-packing trip or even a full blown transcontinental tour.

Kepler can run up to 42c tyres when you need that extra grip, however it’s equally happy running slicks when you want to keep up with the roadies. And of course it’s fully equipped to fit front and rear panniers if you’re loading up for a longer trip. It features laser cut disc dropouts, s-shaped chainstays and a unicrown steel fork. The double butted chromoly tubing makes for a tough yet lightweight ride which will keep going for years to come.

Tubing: 4130 Chromoly steel - double-butted main triangle
Brake compatibility: Disc brake only - 160mm max rotor size
Dropouts: Vertical 135mm O.L.D rear dropouts
Seat post diameter: 27.2mm
Seat clamp diameter: 30mm (included)
Headset: 1 1/8˝ threadless steerer/headset (not included)
Front derailleur clamp diameter: 28.6 mm
Bottom bracket shell: 68mm bottom bracket - ISO threaded
Tyre clearance: up to 700x42c (37c with fenders)
Fork: 4130 Chromoly unicrown fork - disc only
Frame weight: 54cm = 2.1kg
Fork: Uncut = 1.1kg

Swift Track


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.


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

R725 Track


The latest edition of our ever popular track frame, made with Reynolds 725 heat treated steel tubing. Fully lugged construction and super tight true track geometry gives this frame a Keirin feel which is equally at home racing on the track as it is on the streets. That Keirin influence continues this year with two eye catching paint options – a metallic lilac and black sparkle which really pops in the sunshine!


Tubing: Reynolds 725 double-butted main triangle
Fork: Reynolds 'R' round blade track fork
Brake compatibility: Short drop brake caliper (front only)
Optional fork drilling (required for road use)
Dropouts: Polished stainless horizontal dropouts (120mm spacing)
Seat post diameter: 27.2mm
Headset: 1˝ threaded steerer/headset (not included)
Bottom bracket shell: 68mm bottom bracket - ISO threaded
Maximum tyre clearance: 700c x 28mm (max 25mm with front brake)
Frame weight: 54cm = 1875g
Fork weight: Uncut = 750g