The top variants of the Jawa 42 Bobber include the Deluxe, Café Racer, and Classic variants. The Deluxe variant is equipped with a single-cylinder liquid-cooled engine and is the most powerful variant in the lineup. It is capable of producing a maximum power of 24.7 PS and a peak torque of 32.5 Nm. The Café Racer variant is powered by a single-cylinder, air-cooled engine, and churns out a maximum power of 21.4 PS and a peak torque of 29 Nm. The Classic variant is powered by a single-cylinder, air-cooled engine and produces a maximum power of 19.7 PS and a peak torque of 28 Nm. All the variants of the Jawa 42 Bobber are equipped with a 6-speed transmission.