TURN YOUR LARGE 4V PORTS INTO A HIGH VELOCITY RAISED PORT 3V DESIGN.
FITTING THESE PORT FILLERS IMPROVES POWER AND TORQUE ACROSS THE ENTIRE RPM RANGE!
IMPROVEMENTS ARE MADE FROM THE RAISING OF THE PORT FLOOR TO ASIST THE SHORT SIDE TURN. IN ADDITION, THE FILLERS MAKE THE PORT SMALLER WHICH INCREASES THE VELOCITY OF THE PORT AND INCREASES AN EFFICIENT BURN.