The Bovensiepen Spider is a new model based on the BMW Z4 M40i, which ceased production in May 2026. The vehicle features a 3.0-liter inline-six engine upgraded to 429 hp and 580 Nm of torque, paired with an eight-speed ZF automatic transmission.

The car accelerates from 0 to 100 km/h in 4.2 seconds. Performance upgrades include retuned dampers, forged wheels with Michelin Pilot Sport 4S tires, and an optional Performance Package that raises the top speed to 295 km/h.

Design modifications, developed with Frank Stephenson, include a new rear spoiler, side skirts, and bespoke arch vents. The interior features Vernasca leather, Alcantara, and Lavalina leather on the steering wheel.

Production is limited to 99 units with a starting price of €115,500 in Germany. Deliveries are scheduled to begin in the first quarter of 2027.