M8 Valve Spring Kit - PSI Valve Springs up to 640 Lift, Titanium Retainers, Billet Locks, Valve Seals Kit for Triple Groove STC-640SKPSI Valve Springs up to 640 Lift, JHE Titanium Retainers exclusive to this new spring design, Trend Billet Steel Triple Groove Locks, Lower Collar with Valve Seal. This kit will fit any cam and any triple groove valve. STC-640SK
$549.00