DERBI SENDA/GPR ->2006 EURO 2 (ref: 322882)
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 is not equipped with a decompressor to limitate losses and leaks.