Overview Reviews Product Description 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 Product Videos Custom Field Product Reviews Write a Review Write a Review × BRIAN TOOLEY RACING Platinum LS Dual Springs .660in Lift Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *