Brother Cycles - Big Bro - Adventure / Off Road Touring

Brother Cycles - Big Bro - Adventure / Off Road Touring


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 double 42-28t, single 38t

  • Weight: medium (18") frame 2.6kg, fork (260mm steerer) 1.25kg

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