Brother Cycles Kepler Gravel Bikepacking Bike Johannes

The Kepler is a versatile 4130 CrMo steel frame designed for all-road, touring and bikepacking. Having been part of the range for over ten years, it has been continuously refined without altering its tried-and-tested geometry. The current version combines functional details with a classic look and offers a stable, comfortable platform for long distances and challenging mixed-terrain tours.

Size: XL

Colour: metallic blue

Green Metallic

Specification:

Frame & Fork

• 4130 CrMo, double-butted, ED-coated
• New brazed steel fork with dynamo cable routing and triple mounts
• Internal cable routing for the rear brake
• Brazed seat post clamp
• 3 bottle cage positions
• Oak-Leaf metal head badge
• Hand-drawn branding (model year 2026)
• Cane Creek headset

Cockpit

• Procraft stem 50–70 mm
• Surly Stop Bar All-Road/Gravel Handlebar 45 cm
• Black cork grips
• Seatpost 30.6 mm / 400 mm
• Saddle: SQlab or custom

Drivetrain & gear system

• SRAM Rival 1×11 brake/shift levers
• Shimano XT crankset 32T, 175 mm
• SRAM Apex Eagle rear derailleur
• SunRace cassette 11–51, 11-speed

Brakes

• TRP mechanical disc brakes
• 180 mm brake discs front and rear

Wheels & Tyres

• Remerx RX 2030 wheels, 29", 30 mm inner width
• SON hub dynamo 15×110 mm
• Rear hub: Remerx / Shimano 11-speed
• Surly Extraterrestrial Schwalbe G One 700x 45
• Tubeless setup with Stan’s sealant

Compatibility

• 700C or 650B wheels
• Tyre clearance: 700×45 mm or 650B×48 mm
• Mounting points for front and rear luggage racks, mudguards and bikepacking accessories
• Triple-cage mounts on both fork legs

Intended use

• All-road, gravel, touring, commuting
• Stable under heavy loads
• Comfortable over long distances
• Robust for varying terrain

Practical use & experience

Since its launch, the Kepler has been ridden all over the world – from the Australian outback to the hills of California and the Scottish Highlands. Whether it’s a multi-day bikepacking event or the daily commute to work, the Kepler remains reliable, comfortable and stylish.

Suitable for bikepacking

• Numerous mounting points for bottle cages, pannier racks and Anything Cages
• Generous tyre clearance for off-road touring
• Robust 4130 CrMo steel frame for long distances
• Comfortable geometry for long-distance and off-road riding
• Low-maintenance 1×11 setup with a wide gear range

Accessories

• Busch & Müller USB kit: +€90