Head flanges are processed with high-accuracy CNC machines
Matches with exhaust ports perfectly and allows exhaust pulses/pressure to be evenly distributed by the manifold
CNC pipe bending ensures high bending accuracy
The oxygen sensor is moved back to eliminate possible errors occurring due to readings from only one cylinder
Balances exhaust pulse and pressure pulse among cylinders
Decreases RPM drops during shifting
Innovatively arranged to equalize the lengths of the four runners