Brother Cycles Big Bro Frameset

On sale $300 off and free shipping (Aus Only and excludes some remote destinations, contact us if unsure)

The Brother Cycles Big Bro is one of our favorite all around touring and bikepacking frames.

Sliding dropouts give you the option to vary chain stay length, run as singlespeed or with a Rohloff or IGH.

Lots of mounts for attaching racks and cargo, and very generous tyre clearance.

It very nicely straddles the divide between a very capable touring bike and a mountain bike.

Features:

• 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
• Seatpost Diameter: 30.9mm
• Seat clamp Diameter: 33.1mm (included)
• Heaedset: 44mm, SHIS ZS44/28.6 upper, EC44/40 lower (not included)
• Front derailleur clamp diameter: 34.9mm high direct-mount (adapter available separately)
• Bottom Bracket Shell: 73mm, ISO threaded
• Max tyre clearance: 29"x2.6" or 27.4"x3.0"
• Fork: 4130 Chromoly tapered unicrown fork, ED coated, 15x110 Boost thru axle (included), 3 sets bottle cage mounts on all sides
• Chainring clearance: 44-30t double, 38t single
• Weight: medium is 2.6kg frame, 1.37kg fork

Geometry:

SIZE	S	M	L	XL
ST Length	406	457	508	559
TT Length	556	571	595	622
Top Tube Effective	575	595	620	645
Head Tube	95	100	110	125
Head Angle	69.5	70	70.5	70.5
Seat Angle	73	73	73	73
BB Drop	60	60	60	60
Min Chainstay	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