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Brother Big Bro Frameset 2021

$1,229.00
Looking for a versatile frameset for bikepacking and mountain bike duties ? The Brother Big Bro brings awesome adaptability and ride qualities without breaking the bank
Out of stock
Free shipping On orders over $100 (excl. bulky items)

We are expecting bikes to be delivered to Australia Mid January. Email us for stock Limited size run. Pre order to avoid missing out. 

The Borther Cycles Big Bro is a great option for building up a versatile bikepacking bike or general riding rigid Mountain bike. 

With generous tyre clearance for 29" x 2.6" or 27.5" x 3.0 tyres it can ride over anything you want to put before it.

The sliding dropouts at the rear are a real highlight allowing singlespeed or internal gear hub setups. 

 

Tubing: - 4130 Chromoly steel - double-butted main triangle, ED coated
Brake compatibility; 51mm IS disc brake mount, 180mm max rotor size
Dropouts: Boost 12x148mm thru axle (included)
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 2.6", 27.5" x 3.0" (note: not all drivetrains allow for these maximum tyre clearances)
Fork : 4130 Chromoly tapered unicrown fork, ED coated. 15x110mm Boost thru axle (included)
Full-length cable housing guides for derailleurs and brakes
3 sets bottle cage mounts on all sizes
Chainring clearance: 44-30t double, 38t single
Weight: medium (18") frame 2.60kg, fork (300mm steerer) 1.37kg
Tested to ISO 4210 MTB standard

Geometry

 

Bike Size

S

M

L

XL

Seat Tube 

406

457

508

559

Top Tube

556

571

595

622

Top Tube Effective

575

595

620

645

Headtube

90

100

110

125

Headtube angle

69.5°

70°

70.5°

70.5°

Seat Tube angle

73°

73°

73°

73°

BB Drop

60

60

60

60

Chainstay length

445

445

445

445

Fork Length

483

483

483

483

Fork Rake

46

46

46

46

Stack

598

605

616

630

Reach

392

410

432

452

Standover

782

810

840

871

Wheelbase

1083

1098

1118

1144

 

 

 

 

Frame: 4130 Chromoly steel - double-butted main triangle, ED coated, 51mm IS disc brake mount, 180mm max rotor size
Fork:
Headset: 44mm, SHIS ZS44/28.6 upper, EC44/40 lower (not included)
Wheels: -
Tyres: -
Brakes: -
Shifters: -
Derailleurs: -
Crankset: Chainring clearance: 44-30t double, 38t single
Cassette: -
Bottom bracket: -
Pedals: -
Handlebar: -
Stem: -
Seatpost: Seat post diameter: 30.9mm, Seat clamp diameter: 33.1mm (included)
Saddle: -
Accessories:
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