{"product_id":"promaxx-performance-pmx8401-gm-ls-series-gold-series-valve-spring-retainer-kit","title":"PROMAXX Performance PMX8401 GM Ls Series Gold Series Valve Spring \u0026 Retainer Kit","description":"\u003cp\u003eLooking for performance? PROMAXX Performance Gold Series valve spring and retainer kits are probably one of the most widely used and trusted \"drop-in\" dual spring kits. They will work with both stock and aftermarket rocker arms and there is no cutting or machining needed of the stock spring pocket. PROMAXX Performance Gold Series consists of Gold dual springs, titanium retainers, machined locks, machined spring bases, and 16 Viton rubber seals. Go for the gold Gold Series valve spring and retainer kits from PROMAXX Performance.\u003c\/p\u003e \u003cbr\u003e\u003cbr\u003e\u003cp\u003eApplication: GM LS Series V8.\u003c\/p\u003e  \u003cp\u003eNumber of Springs Per Valve: Dual\u003cbr\u003e Valve Spring Style: Standard\u003cbr\u003e Installed Height (in): 1.800 in.\u003cbr\u003e Seat Pressure at Installed Height (lbs): 135 lbs.\u003cbr\u003e Open Height (in): 1.150 in.\u003cbr\u003e Open Pressure (lbs): 375 lbs.\u003cbr\u003e Valve Stem Diameter (in): 0.315 in.\u003cbr\u003e Valve Stem Diameter (mm): 8.00mm\u003cbr\u003e Retainers Included: Yes\u003cbr\u003e Retainer Material: Titanium\u003cbr\u003e Locks Included: Yes\u003cbr\u003e Lock Style: 7 degree\u003cbr\u003e Lock Groove Quantity: 1-groove\u003cbr\u003e Lock Material: Steel\u003cbr\u003e Outside Diameter of Outer Spring (in): 1.290 in.\u003cbr\u003e Damper Spring Included: No\u003cbr\u003e Valve Springs Coated: Yes\u003cbr\u003e Valve Stem Seals Included: Yes\u003cbr\u003e Quantity: Sold as a kit.\u003cbr\u003e Notes: Kit includes 32 locks, 16 retainers, 16 valve seals, and 16 seats.\u003c\/p\u003e","brand":"PROMAXX Performance","offers":[{"title":"Default Title","offer_id":44553567437111,"sku":"PMX8401","price":671.7,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/129114.jpg?v=1780360928","url":"https:\/\/enginemaster.com.au\/products\/promaxx-performance-pmx8401-gm-ls-series-gold-series-valve-spring-retainer-kit","provider":"Engine Master","version":"1.0","type":"link"}