The above view shows the direct flow into the valves. Throttle Position Sensor is visible at left. Note the uninterupted 5 deg.
Trumpets are removable to allow different lengths for tuning.
Tip of injector can be seen at top near port entrance. TB removed from head. Note centre tracts are longer than outers. CBR1000FH head has the two centre ports at a different height to outers. Machining of TB needed to be very accurate to allow this to happen.