Responsive Mid-Drive Support

The Bafang M430 mid-drive delivers up to 120Nm of torque where it matters most: starts, climbs and loaded rides. Combined with a torque sensor, assistance responds to your pedalling effort for a more natural feel and better control across changing terrain.

Range for More Than the Commute

A removable 48V 15Ah battery with LG 21700 cells provides up to 175km of assisted range under suitable conditions. It gives you more flexibility for longer commutes, countryside routes and weekend touring without planning every ride around the next charge.

Comfort Beyond Smooth City Streets

A 100mm lockout air fork and 27.5-inch Kenda trekking tyres help absorb broken tarmac, gravel paths and uneven roads. Adjust the suspension to the route and enjoy a more settled ride when your journey extends beyond well-maintained cycle lanes.

Controlled Braking When Conditions Change

Tektro hydraulic disc brakes with 180mm rotors provide progressive, predictable braking with less hand effort. Combined with reflective tyre strips and integrated K-mark lighting, BK-S3 is designed with visibility and everyday control in mind.

Built Around Real Everyday Use

Fast 1.5–2 hour charging reduces downtime, while the removable battery makes indoor charging easier. A rear rack, Shimano 7-speed drivetrain, adjustable seatpost and central TFT display complete a trekking setup built for commuting, errands and longer weekend rides.