The Laurin & Klement B2 (also known as the 10/12 HP) was the successor of the Laurin & Klement B. It was introduced in 1907 as a 2-seater Voiturette. The car was discontinued in 1908.

The water-cooled, alternately controlled four-stroke engine had a displacement of 1595cm ³ and a power output of 12 hp (8.8 kW). This helped to accelerat the 700-800-pound vehicle up to 45 km/h. The power was transferred through a transmission and a drive shaft to the rear wheels. The chassis of the car consisted of riveted steel U-profile beams.