As an Amazon Associate, we earn from qualifying purchases. MHS / PAC Stage 4 RPM Series 5.0L Coyote Valve Springs Modular Head Shop . VS-5.0L-STG4 Gallery Attributes Brand name, Manufacturer name, ManufacturerModular Head Shop ConditionNEW Extra Product NameMHS / PAC Stage 4 RPM Series 5.0L Coyote Valve Springs keywordsmhs, modular head shop, pac, stage 4, 5.0l, 5.0, coyote, valve springs, retainers, titanium, rpm series, 1217x, moq, multiple, tierMinQty11 MPNVS-5.0L-STG4 qtyInStock-2 qtySourceFieldMap SKUMHS-VS-5.0L-STG4 snippetMHS / PAC RPM Series Stage 4 5.0L Coyote Valve Springs - These Valve Springs are suggested for applications running 30+ lbs of boost and are capable of handling up to .575" lift. TI-VCT must be locked out and upgraded timing chains / guides are suggested. tierPrice1579.00 Distributor offers SellerSKUMOQIn stockMultiplePrices modularheadshop.comMHS-VS-5.0L-STG41-211 @ $579.00