German e-bike manufacturer HNF Heisenberg has teamed up with BMW to design and build a belt-drive, full-suspension electric mountain bike, according to a report from Bike Rumor.
The new HNF Heisenberg XF1 uses a unique swingarm patented by BMWi (BMW’s sustainable mobility program) to allow the drivetrain and electric motor to move with the suspension of the bike instead of being hard-mounted to the frame. This “floating four-bar suspension system” is designed to keep tension constant in the drive train and maintain the same pedal position throughout the 150 millimeters of rear travel.
The HNF Heisenberg XF1 uses a Bosch e-bike system powered by a 400Wh lithium-ion battery that’ll last up to 81 miles per charge. It includes an integrated computer to display information about the electric drive and measure speed and distance.
The XF1 retails for $9,225.