The Brother Cycles Mehteh is a Reynolds 725 steel gravel frameset built for rougher routes and long days riding. It combines a heat-treated, double-butted steel frame with Brother’s full-carbon gravel fork, offering a starting point for a fast gravel bike or a bikepacking build with generous tyre room.

The current frame uses a SRAM UDH-compatible rear hanger, allowing a conventional rear derailleur or a compatible SRAM Full Mount setup. Clearance reaches 700c x 50mm or 650b x 2.2in, while the fork adds triple cage mounts, mudguard fittings, dynamo routing and adjustable-offset flip-chip dropouts. Three bottle positions and rear rack fittings support longer trips.

The supplied Brother seat clamp is CNC machined in the UK. This is a frameset rather than a complete bicycle: use the specifications and geometry below to plan the wheelset, brakes, headset and drivetrain for your intended build.

Technical specifications

• Frame tubing: Reynolds 725 heat treated chromoly double-butted main triangle, ED coated
• Brake compatibility: flat mount, 160mm max rotor size
• Rear dropouts: 12x142mm TA (included)
• Gear hanger: SRAM UDH type
• Seat post diameter: 27.2mm
• Seat clamp diameter: 30mm (included)
• Headset: 44mm, ZS44/28.6 upper, EC44/40 lower (not included)
• Front derailleur clamp diameter: 28.6mm
• Bottom bracket shell: 68mm bottom bracket, ISO threaded
• Maximum tyre clearance: 700c x 50mm, 650b x 2.2"
• Full-length cable housing guides for derailleurs and brakes
• 3 sets bottle cage mounts on all sizes
• Rear rack and mudguard mounts
• Chainring clearance: up to up to 52-39-30t triple, 50-34t double, 48t single
• Fork: 1.5″ – 1.1/8″ tapered steerer full carbon disc fork, mudguard/triple cage mounts, Dynamo routing and flip chip dropouts, 12x100mm TA (included)
• Frame weight (medium): 2.3kg
• Fork weight (uncut steerer): 0.55kg

Frame geometry

Available options

• Frame Size: Large, Medium, Small, X-large, X-small, XX-Large
• Colour: Blue Lagoon, Stealth Black

Frame warranty

Brother provides a three-year warranty against manufacturing and material defects for the original purchaser, with proof of purchase required. Paintwork, normal wear, misuse and damage caused by neglect or modification are excluded. Refer to the manufacturer’s full warranty terms for the conditions that apply.