{"product_id":"isky-isk9005-plus-endurance-plus-valve-springs-1-530od-170lb-seat-455lb-open","title":"Isky ISK9005-PLUS Endurance Plus Valve Springs 1.530\"OD 170LB Seat 455LB Open","description":"ISKY ENDURANCE PLUS VALVE SPRINGS 1.530\"OD 170LB SEAT 455LB OPEN ISK9005-PLUSThe Endurance Plus series of valve springs utilises a specially processed Tool Room Material for increased endurance and reliability beyond the \"SP\" series plus special processing for increased durability. Endurance Plus springs are designed for late models, modifieds, etc and are Spintron Test-Proven up to 8400 rpm for 850 racing miles.Specs:Number of Springs Per Valve:DualOutside Diameter of Outer Spring (in):1.530 in.Coil Bind Height (in):1.160 in.Damper Spring Included:YesSpring Rate (lbs\/in):455 lbs.\/in.Inside Diameter of Outer Spring (in):1.110 in.Inside Diameter of Inner Spring (in):0.725 in.Valve Spring Style:StandardCoated:NoQuantity:Sold as a set of 16.Installed Height (in):1.900 in.Seat Pressure at Installed Height (lbs):170 lbs.Open Height (in):1.300 in.Open Pressure (lbs):455 lbs.Items are shipped within one to two business days after full payment has been recieved. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Isky Racing Cams","offers":[{"title":"Default Title","offer_id":44705073299767,"sku":"ISK9005-PLUS","price":549.3,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/91823.jpg?v=1780426070","url":"https:\/\/enginemaster.com.au\/products\/isky-isk9005-plus-endurance-plus-valve-springs-1-530od-170lb-seat-455lb-open","provider":"Engine Master","version":"1.0","type":"link"}