Mazworx Shimless SR20VE Intake and Exhaust Valves are recommended for High RPM All Motor applications.
Intake valves: +2.85mm (37mm) x 5.5mm stem
Exhaust valves: +0.85mm (30mm) s 5.5mm stem
Requires 5.5mm retainers and keepers.
P11 heads are required to change to 5.5mm guides.
Lashing is done by tipping of the valve.
Intake seat will need to be replaced with larger ones.