wing-shaped magnesium battery case keeps electric motorcycle FF.S6 cool on off-road rides

electric motorcycle FF.S6 has wing-shaped battery case

Royal Enfield’s Flying Flea introduces FF.S6, an off-road and city electric motorcycle that comes with a wing-shaped magnesium battery case to keep itself cool. Presented at EICMA 2025 in Milan, Italy, the vehicle follows the brand’s goal to build lightweight electric vehicles designed for both city use and off-road conditions. The design and concept of the FF.S6 take inspiration from the original Flying Flea motorcycles used during World War II, which were small, portable bikes made for easy transport and flexible use on different terrains. It is powered by an electric motor that delivers high torque suitable for different surfaces and uses a chain final drive, a USD front fork suspension, and wheels sized 19 inches at the front and 18 inches at the rear.

This setup helps balance handling for both city roads and off-road paths. The bike also includes a long, enduro-style seat made for comfort during extended rides. A main feature of the electric motorcycle FF.S6 is its magnesium battery case, made to reduce weight while helping the battery stay cool. It includes fin-shaped structures that serve both a technical and symbolic role. The front fins stand for new technology, while the rear fins refer to the company’s history. The fins meet at the center to form a shape similar to wings, which represents the Flying Flea name. Another feature is the circular touchscreen display, called the ‘true round TFT cluster.’ It combines a traditional round speedometer form with digital functionality, with the display providing real-time data and able to show navigation, music, and other connected features.

electric motorcycle battery case
all images courtesy of Flying Flea

Flying flea develops parts of the two-wheeler in-house

Aside from the magnesium battery case, the design team develops parts of the electric motorcycle FF.S6 in-house, including the electric powertrain, battery management, and user interface. The main operating system runs on a Qualcomm Snapdragon QWM2290 processor, a chip made for two-wheelers. This processor enables 4G, Bluetooth, and Wi-Fi connectivity and allows riders to connect their phones and manage the vehicle in real time. Because of this, the two-wheeler includes a Voice Assist button for hands-free control. Riders can use voice commands to start navigation, play music, or check the bike’s status. Safety systems include traction control, navigation support, and lean-angle sensing ABS (the ABS system can be switched off for off-road riding).

The electric motorcycle FF.S6 uses microcontrollers to manage its energy use and adjust performance automatically based on how the vehicle is being used. The vehicle also supports multi-device connectivity, meaning that riders can connect through a smartwatch or a mobile app. This system enables remote functions such as unlocking the bike, checking the charging level, choosing ride modes, and viewing diagnostics. Through this, riders can activate the over-the-air (OTA) updates, so the ride’s software can be improved without visiting a service center. After its unveiling at EICMA 2025, a motorcycle exhibition that runs between November 6th and 9th, Royal Enfield’s Flying Flea plans to release the electric motorcycle FF.S6 with a wing-shaped magnesium battery case by the end of 2026.

electric motorcycle battery case
Royal Enfield’s Flying Flea introduces FF.S6, an off-road and city electric motorcycle