Description 4age 20v Drop In Upgrade 10hp MRP Stage 1.5 mod to suit 4age 20v Blacktop Drop in kit meaning no ECU mods are required, just install the parts and gain 10hp ! Works with 7age conversion as well Contents: MRP VVT N/A Camshafts 264 Deg Intake 9.5mm 268 Deg Exhaust 9.4mm Toda AE111 20v Valve Springs This kit will require removal of the cylinder head to change the valve springs, unless you have special tools required to pressurize the cylinder which will hold the valves in place. **Optional Adjustable Exhaust Cam Gear which can help fine tune your power curve** We would also recommend our 95mm velocity stacks to free up more power
