4P R40 K24Z "4-Port" Race Head Nissan GT-R 4L+ Displacement Naturally Aspirated Engines

4L+ Displacement Naturally Aspirated Engines

VTEC and VTC are retained

Optional valvetrain packages are in the checkbox area

This is a replacement long block only

and that is why to see our name topping world record efforts across all forms of motorsports

4P R40 K24Z "4-Port" Race Head Nissan GT-R 4L+ Displacement Naturally Aspirated EnginesIntroducing the 4P R40 "4 port" Race Head The big debate of porting the R40 or swapping to a 4 Port head for your 9th generation Civic will be battled to the death. There are absolute advantages to both configurations. For you guys that want a 4 Port and fly that flag, we have the ULTIMATE solution. Our 4 Port Race casting gives you an OEM R40 water configuration and a 4 port exhaust layout.. and NO half ass RTV on the gasket surface or welding. It