Bovensiepen has revealed the Spider, a hand-built roadster based on the BMW Z4 and limited to 99 cars worldwide. Priced at €115,500 including tax, it uses a 435 hp twin-turbo inline-six engine and reaches 100 km/h in 4.2 seconds. First customer deliveries are expected by the end of the first quarter of 2027.
How is the Bovensiepen Spider styled?
The Bovensiepen Spider adds gloss-black trim to the front diffuser, large air outlets behind the front wheel arches, the side skirts and the rear diffuser. Its rear spoiler has also been widened and reshaped.

Which colours and interiors are offered?
The Bovensiepen Spider is available in five exclusive metallic paint finishes, with production divided across the 99 cars as follows.
| Paint finish | Production allocation |
|---|---|
| Sapphire Black | 40 cars |
| San Remo Green | 25 cars |
| Skyscraper Grey | 20 cars |
| Thundernight | 9 cars |
| Frozen Grey II | 5 cars |
Black Vernasca leather and Alcantara upholstery is standard. A Cognac-coloured Vernasca and Alcantara interior is offered with Sapphire Black and San Remo Green exterior paint.
What chassis upgrades does it receive?
The Bovensiepen Spider uses 20-inch forged multi-spoke wheels with Michelin Pilot Sport 4S tyres. Its suspension has been retuned with longer damper travel, while longer helper springs are fitted to the rear axle.
| Component | Front | Rear |
|---|---|---|
| Tyres | 255/35 ZR20 | 295/30 ZR20 |
| Brake discs | 395 mm | 345 mm |
| Brake calipers | Four-piston fixed | Not specified |

What performance does the Spider deliver?
The Bovensiepen Spider uses a twin-turbo inline-six engine producing 435 hp and 580 Nm of torque. A ZF eight-speed automatic transmission sends power to the wheels and includes steering-wheel-mounted shift paddles.
- 0–100 km/h in 4.2 seconds
- Standard top speed of 260 km/h
- Top speed of 295 km/h with the optional performance package
The performance package adds a rear differential with larger cooling fins and a V-shaped chassis brace. In SPORT mode, the transmission can complete shifts in 0.1 seconds.


