About the MBM Kairos 27.5 eMTB

The MBM Kairos 27.5 is a capable electric mountain bike designed for riders who want the confidence to tackle steeper climbs, rougher terrain and longer off-road adventures. Powered by an Italian-made OLI Sport mid-drive motor delivering an impressive 85Nm of torque, it provides strong, responsive assistance that feels natural on everything from woodland trails to challenging hills.

Built around a lightweight aluminium frame, the Kairos combines 27.5" wheels, front suspension and hydraulic disc brakes to deliver confident handling and control across varied terrain. The powerful motor and integrated battery work together to help you ride further with less effort, while the trail-focused geometry inspires confidence both on climbs and descents.

Whether you're exploring forest tracks, tackling weekend trail rides or simply looking for a more capable electric mountain bike, the MBM Kairos 27.5 offers the performance, comfort and reliability to help you get more from every ride. Designed for UK roads and trails, the Kairos provides pedal assistance up to 15.5mph and is legally classified as an EAPC.

Specifications

• Motor: OLI Sport 250W Mid-Drive Motor
• Torque: 85Nm
• Battery: 36V 14Ah (504Wh)
• Frame: Aluminium 6061 Hydroformed
• Suspension: Suntour XCM HLO Fork
• Gearing: Shimano Altus 9-Speed
• Brakes: Shimano Hydraulic Disc Brakes
• Wheel Size: 27.5"
• Tyres: Schwalbe Smart Sam
• Weight: Approx. 24kg
• Max Assisted Speed: 25km/h (15.5mph)
• Recommended Rider Height (40 cm Frame): 5'2" – 5'5" (158 cm – 165 cm)
• Recommended Rider Height (45 cm Frame): 5'6" – 5'10" (168 cm – 178 cm)
• Recommended Rider Height (50 cm Frame):  5'11" – 6'5" (180 cm – 195 cm)