Brother Cycles Big Bro Rohloff Edition

Big Bro Rohloff 2025 – an extremely durable bikepacking touring bike with a Rohloff 14-speed system, SON hub dynamo and chromoly frame. Colours: Black, Swamp Thing. Sizes: S–XL.

Sturdy bikepacking touring bike for demanding adventures. Rohloff and hub dynamo.

Colour and size: black S, M, L, XL

The Big Bro ‘Rohloff’ is a versatile, extremely durable bike, specially designed for long-distance, off-road touring and bikepacking. With the legendary Rohloff Speedhub and high-quality components, it’s ready for any terrain.

Specifications: Subject to change

Colours

• Black

• Swamp Thing (metallic green)

🚲Frame set

• Tubing: 4130 heat-treated chromoly steel, double-butted, ED-coated

• Brake mount: 51 mm IS disc mount, max. rotor size: 180 mm

• Dropouts: Boost 12 × 148 mm thru-axle (included)

• Derailleur hanger: SRAM UDH type, fully replaceable

• Fork: Tapered chromoly

• Headset: Cane Creek, tapered

🛠Components

• Brakes: Shimano Deore 6120, 4-piston, hydraulic (front & rear)

• Brake levers: Shimano Deore

• Brake discs: 180 mm front / 160 mm rear

• Crankset: 175 mm, 40–42 teeth

• Bottom bracket: SRAM DUB Eagle, 68–73 mm, Boost-compatible

• Gear system: Rohloff 14-speed hub with Thorn accessory handlebar (T-extension 55 mm, Ø 22.2 mm)

• Stem: Procraft, 31.8 mm, length 60–120 mm (optional)

• Handlebars: Pro Koryak Flatbar or Surly Moloko

• Saddle: WTB Volt or alternative option

• Seatpost: Ergotec, 30.0 × 400 mm or alternative option

🛞Wheels & tyres

• Front wheel: RYDE 27.5 × 30 with SON hub dynamo (or 29")

• Rear wheel: RYDE 27.5 × 30 with Rohloff Speedhub (or 29")

• Tyres: Schwalbe Marathon Mondial, choice of 27.5 × 2.25

• Inner tube: to match tyre size or tubeless-compatible

🔗Drivetrain & Accessories

• Chain: KMC e1

• Recommended combination: Rohloff 16-tooth sprocket + 42-tooth crankset (e.g. FSA 175 mm) – ideal for the Big Bro or Surly Ogre with a smaller front wheel

Brother Cycles Big Bro Rohloff – the robust bikepacking touring bike for long-distance rides, off-road tours and expeditions. Fitted with the Rohloff 14-speed Speedhub and an optional SON or Shimano hub dynamo for reliable lighting and charging on long journeys.