Focus Jam² - the mountain bike with motor

Focus has stated that it no longer wants to produce e-mountainbikes. With the Jam², the Stuttgart-based company is presenting a mountain bike with an integrated motor and battery weighing just over 20 kilograms. With the additional battery, the Jam²'s range of use can be extended even further.

The Jam² impresses at first glance with its simple, atypical e-mountainbike appearance. The self-developed battery is fully integrated into the closed down tube of the Jam², with the Shimano Steps motor unit serving as the drive. The geometry of the e-bike has changed only slightly compared to the non-motorized version of the Jam. The overall weight of the Jam² is interesting. In the top version, the bike weighs just over 20 kilograms, or 20.9 kilograms to be precise. The Jam² has 140 millimeters of suspension travel. The suspension system used is Focus' own F.o.l.d with Rock Shox Yari suspension fork and Monarch shock. By installing different "Guidelinks", the stiffness of the rear triangle can be adjusted and the performance remains the same. Thanks to the "Shimano Steps motor" used, the length of the chainstay can be kept short. This still measures a short 457 millimetres and should prove itself in nimble handling. The steering angle is also in the direction of a trail bike. The flat 66.5 degrees should keep the bike stable. As is typical for trail bikes, a telescopic seat post is fitted. The proven 27.5 Plus size is used for the tires.

Integrated and additional battery

The motor was taken from Shimano, while the battery was developed in-house and is fully integrated into the down tube. Thanks to the innovative design, the down tube can be designed to be suitably rigid. The battery is attached to the frame using screws. The battery has an output of 380 watt-hours, but the combination with the Steps motor gives it a lot more power. The highlight is the option of attaching an additional battery to the frame. With the T.E.C battery add-on, the power volume doubles to 760 watt hours, with an additional weight of 2.1 kilograms. When the second battery is not in use, the T.E.C installation serves as a bidon and tool holder.

Shimano Steps motor

The motor is easy to operate using the familiar DI2 shifters - the display also uses the familiar DI2 discreet display. All settings can be accessed via the display; a smartphone app is still under development. Thanks to the Shimano motor, the width of the bottom bracket can be kept narrow.

Six versions

The Jam² will be available in six versions from January. In addition to the 27.5 Plus version, a 29-inch version will also be available. The range will be rounded off with a hardtail, the Focus Bold².

www.focus-bikes.com