Curb Hoppers0My CartPAC Racing SpringsValve Spring - 1200 Series - Dual Spring - 540 lb/in Spring Rate - 1.180 in Coil Bind - 1.550 in OD - Circle Track Endurance - EachListing ID: 1260858Manufacturer Part Number: PAC-1239-1Out Of StockBrand NewCopyright (C) 2019-2024 Initial Holdings LLC dba Curb Hoppers. All Rights Reserved.