4in2 EXHAUST MANIFOLD

The honda na engine has a relatively low -speed torque and has a high advantage of 4-2-1 layout.therefore, it is recommended to test and experience combining exhaust manifold and genuine 2in1.all spoon exhaust manifold adopts a foul insert method with no steps with the port and a skillful assembly technology tig welding method.the lighter nose can also contribute to excellent handling, which can also provide a secondary effect.