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Brother Cycles Big Bro Yellow - Frameset

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The Big Bro is a frame built for tough adventures, for those who take bikepacking seriously. Made from CrMo steel to survive several trips around the world. This model has completed two of the toughest endurance races in the world - the 441.8-mile Tour Divide from Canada to Mexico and the 171-mile Silk Road Mountain Race in Kyrgyzstan.

We think it’s great that Brother Cycles has made a frame with Boost spacing that you can ride geared or single speed! You can also choose between 27.5" and 29" tires, depending on the terrain the bike needs to handle.

From experience, we can tell you that the maximum tire clearance of 3" requires a single chainring up front; with a double, the chain will rub against the tire.

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Specifications

Tubing: - 4130 chromoly steel - double-butted main triangle, ED-coated
Brake compatibility: 51 mm IS disc brake mount, 180 mm max rotor size
Dropouts: Boost 12x148 mm thru-axle (included)
Seat post diameter: 30.9 mm
Seat clamp diameter: 33.1 mm (included)
Headset: 44 mm, 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: 73 mm bottom bracket, ISO threaded
Maximum tyre clearance: 29" x 2.6", 27.5" x 3.0" (note: not all drivetrains allow for these maximum tyre clearances)
Fork: 4130 chromoly tapered unicrown fork, ED-coated. 15x110 mm Boost thru-axle (included)
Full-length cable housing guides for derailleurs and brakes
3 sets of bottle cage mounts on all sizes
Chainring clearance: 44-30t double, 38t single
Weight: medium (18") frame 2.60 kg, fork (300 mm steerer) 1.37 kg
Tested to ISO 4210 MTB standard

GPSR

Manufacturer:
Brother Cycles Limited
Ground Floor,
Enterprise Suite
Brogdale Farm,
Brogdale Road, Faversham,
ME13 8XZ Kent,
England
+4484 5900 6774
info@brothercycles.com

Importer:

SDG Distribution,
114 rue des Vanniers
40150 Soorts Hossegor,
FRANCE
info@sdg-distribution.fr

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