Brother Cycles Kepler Frame Set 2025

The Kepler 2025 is a versatile 4130 chromoly steel frame, designed for gravel, touring and bikepacking. With generous tyre clearance, modern flat-mount brake mounts, thru-axles and numerous mounting points, it offers maximum flexibility for adventures on and off-road.

Sizes: 50, 52, 54, 56, 58, 60

Colour: yellow melow

Teal is real

(Please enquire for current stock status)

Specifications

Frame & Fork

• Frame: 4130 chromoly steel, double-butted main triangle, ED-coated
• Brake mount: Flat Mount, max. 160 mm rotor
• Rear end: 12×142 mm thru-axle (included)
• Seatpost: 27.2 mm
• Headset: 1 1/8" (not included)
• Derailleur cage: 28.6 mm
• Chainring compatibility:
  – 52–39–30 (triple) – 50–34 (compact) – 48T (single)
• Bottombracket: 68 mm BSA / ISO thread
• Tyre clearance: up to 700×45C or 650B×48
• Fork: 4130 chromoly, brazed, 300 mm steerer tube, 12×100 mm thru-axle (incl.)
• Frame weight: approx. 2.25 kg (size 56)
• Fork weight: approx. 1.2 kg (uncut)
• Certification: ISO 4210
• New brazed steel fork with dynamo cable routing
• Internal cable routing for the rear brake
• Brazed seat post clamp
• Additional bottle cage mount holes on the down tube
• New Oak Leaf metal head tube badge

Bikepacking & touring features

• Compatible with front and rear luggage racks
• Three bottle cage positions on the frame
• Triple mounts on both fork legs
• ED coating for improved corrosion protection
• 700C or 650B – maximum flexibility for a variety of terrain