Drag racing cams to suit high rpm turbocharged 700hp-1000hp+ SR16VE/SR20VE engines. Centre lobe removed, large lobe profile on outer lobes to allow for VVL system to be removed for less valvetrain mass. Suits 67mm+ turbo. Great with alcohol based fuels. 10k+ rpm. Kelford Cams recommend KVS10-BT valve spring kit.