4G63 DOHC Beehive Spring | Base KVS63-BK Mechanical fuel pump These high velocity cams require

These high velocity cams require a shimless bucket or shim-under bucket conversion

Please ensure you apply Loctite on the supplied hardware when installing your baffle plates inside the cam covers

\n \nView R-199 Cams

Boost Reference Adapter - Suits Renault Clio RS 1

75lb seat pressure at 35

4G63 DOHC Beehive Spring | Base KVS63-BK Mechanical fuel pump These high velocity cams requireInstall at 90lb seat pressure. Maximum lift is 13. 50mm MITSUBISHI 4G63 DOHC EVO 8 9. High Performance PACALOY Beehive spring to suit stock retainers. Suits high RPM, high boost competition engines. Install at 90lb. Maximum valve lift is 13. 50mm.