BRIAN TOOLEY RACING Platinum LS Dual Springs .660in Lift SK001/S/0545/BB

BRIAN TOOLEY RACING Valve Spring Kit - Dual Spring - 380 lb/in Spring Rate - 1.070 in Coil Bind - 1.300 in OD - Locks / Steel Retainers / Viton Seals / Seats - GM LS-Series - Kit.