{"product_id":"isky-isk9975-rad-tool-room-rad9000-valve-springs-1-560-od-245lb-seat-590lb-open","title":"Isky ISK9975-RAD Tool Room Rad9000 Valve Springs 1.560\" OD 245LB Seat 590LB Open","description":"ISKY TOOL ROOM RAD9000 VALVE SPRINGS 1.560\" OD 245LB SEAT 590LB OPEN ISK9975-RADIntroducing Isky's new RAD-9000 process option for Tool Room valve springs. Under trade secret Radial-Densification (RAD), the physical properties of Tool Room springs are optimised for even greater surface to core uniformity. To insure they'll withstand the tortures of sustained high rpm operation, we subject each batch to the most rigorous real world test standard ever created, SPINTRONTEST II. It's a no holds barred run as high as 9000 RPM where for over 1,000 miles, race ending competitive abuse is continuously revisited. This pass or fail benchmark is the only test of its kind in the performance industry and every set of Tool Room springs conforms to its high standard.Specs:Number of Springs Per Valve:DualOutside Diameter of Outer Spring (in):1.560 in.Coil Bind Height (in):1.190 in.Damper Spring Included:YesQuantity:Sold as a set of 16.Installed Height (in): 1.970 in.Seat Pressure at Installed Height (lbs):245 lbs.Open Height (in):1.290 in.Open Pressure (lbs): 590 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":44549450727735,"sku":"ISK9975-RAD","price":919.1,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/91882.jpg?v=1780426127","url":"https:\/\/enginemaster.com.au\/products\/isky-isk9975-rad-tool-room-rad9000-valve-springs-1-560-od-245lb-seat-590lb-open","provider":"Engine Master","version":"1.0","type":"link"}