DERBI/SENDA EURO4 (D50BO)NEW MODEL (ref: 505640)

The DOPPLER cylinder head is made of aluminium. The combustion chamber is machined with a bi-hemispherical switch effect, providing better engine compression. The central spark plug offers better explosion and better thrust on the piston. The O-ring gasket mounting provides better watertightness and a more accurate chamber volume. This cylinder head cab only be installed on DOPPLER vortex cylinders.