- Liquid-cooled engine produces 29bhp and 29.6Nm
- 21-inch front and 17-inch rear wheels
- 830mm seat height
BSA has showcased the Thunderbolt 350 at EICMA 2026 as its first modern adventure motorcycle. Originally unveiled at EICMA 2025, the Thunderbolt combines a 334cc single-cylinder engine with long-travel suspension, wire-spoke wheels and a design inspired by traditional rally motorcycles.
Thunderbolt 350 takes a different approach from the other motorcycles in BSA’s current portfolio. It features a tall front section, prominent beak, substantial fuel tank and a relatively narrow rear end. The motorcycle also gets its unusual asymmetrical headlamp arrangement, accompanied by a tall windscreen and large handguards.
Powering the Thunderbolt is a 334cc liquid-cooled single with a four-valve head and twin spark plugs. It produces approximately 29bhp and 29.6Nm paired with a six-speed gearbox. The motorcycle has been developed around accessible performance and everyday usability.
Suspension package comprises a 43mm upside-down front fork and a rear monoshock offering seven-step preload adjustment. The motorcycle rides on a 21-inch front wheel with a 90/90-section tyre and a 17-inch rear wheel with a wider 140/80-section tyre. It weighs in at 202kg wet.
BSA has confirmed traction control and dual-channel ABS with three selectable settings, Road, Rain and Off-Road. The motorcycle also gets an adjustable windscreen and instrument console, Bluetooth connectivity, turn-by-turn navigation and a USB charging port.
