{"product_id":"hks-hipermax-s-coilovers-for-2015-2021-subaru-wrx-sti","title":"HKS Hipermax S Coilovers for 2015-2021 Subaru WRX \/ STI","description":"\u003ch3 data-start=\"162\" data-end=\"209\"\u003eHKS Hypermax S Coilovers – Subaru WRX \/ STI\u003c\/h3\u003e\n\u003cp data-start=\"211\" data-end=\"580\"\u003eThe HKS Hypermax S Coilovers are a precision-engineered suspension system developed to significantly enhance chassis control, damping response, and overall vehicle dynamics on the Subaru WRX and STI. Designed using motorsports-derived technology, this system delivers high-level performance for aggressive street driving and track use without compromising ride quality.\u003c\/p\u003e\n\u003cp data-start=\"582\" data-end=\"939\"\u003eBacked by decades of HKS suspension and racing development, the Hypermax S features a mono-tube damper architecture combined with advanced valve control to maintain consistent damping under high load and temperature conditions. The result is improved steering response, reduced body roll, and superior road feedback across a wide range of driving scenarios.\u003c\/p\u003e\n\u003cp data-start=\"941\" data-end=\"1152\"\u003eEach kit arrives fully assembled with upper mounts and includes all required adjustment tools, allowing for precise ride height and damping tuning to match driver preference, tire setup, and driving environment.\u003c\/p\u003e\n\u003chr data-start=\"1154\" data-end=\"1157\"\u003e\n\u003ch3 data-start=\"1159\" data-end=\"1190\"\u003eKey Technologies \u0026amp; Features\u003c\/h3\u003e\n\u003cul data-start=\"1192\" data-end=\"2432\"\u003e\n\u003cli data-start=\"1192\" data-end=\"1441\"\u003e\n\u003cp data-start=\"1194\" data-end=\"1441\"\u003e\u003cstrong data-start=\"1194\" data-end=\"1234\"\u003eDual Preload Valve System (Dual PVS)\u003c\/strong\u003e\u003cbr data-start=\"1234\" data-end=\"1237\"\u003eIndependently controls low- and high-speed damping to eliminate excessive damping force during rapid suspension movement, maintaining ride compliance while preserving stability under aggressive driving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1443\" data-end=\"1649\"\u003e\n\u003cp data-start=\"1445\" data-end=\"1649\"\u003e\u003cstrong data-start=\"1445\" data-end=\"1485\"\u003eWide-Range 30-Way Damping Adjustment\u003c\/strong\u003e\u003cbr data-start=\"1485\" data-end=\"1488\"\u003eRedesigned needle jet geometry provides a broader, more usable adjustment range, enabling fine-tuned damping control for street, canyon, or track applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1651\" data-end=\"1854\"\u003e\n\u003cp data-start=\"1653\" data-end=\"1854\"\u003e\u003cstrong data-start=\"1653\" data-end=\"1685\"\u003eOptimized Bump Stop Geometry\u003c\/strong\u003e\u003cbr data-start=\"1685\" data-end=\"1688\"\u003eRedesigned bump stop rubber reduces sudden load transfer and body roll while maintaining compliance—delivering controlled suspension travel without harsh bottoming.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1856\" data-end=\"2061\"\u003e\n\u003cp data-start=\"1858\" data-end=\"2061\"\u003e\u003cstrong data-start=\"1858\" data-end=\"1894\"\u003eLow-Friction Internal Components\u003c\/strong\u003e\u003cbr data-start=\"1894\" data-end=\"1897\"\u003eAdvanced tribology reduces friction between internal damper components, improving response speed, durability, and consistency under sustained performance driving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2063\" data-end=\"2120\"\u003e\n\u003cp data-start=\"2065\" data-end=\"2120\"\u003eMono-tube damper design for improved heat dissipation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2121\" data-end=\"2181\"\u003e\n\u003cp data-start=\"2123\" data-end=\"2181\"\u003eIndependent ride height adjustment via shock-body length\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2182\" data-end=\"2246\"\u003e\n\u003cp data-start=\"2184\" data-end=\"2246\"\u003eHigh-performance damper oil engineered for thermal stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2247\" data-end=\"2299\"\u003e\n\u003cp data-start=\"2249\" data-end=\"2299\"\u003ePNE-coated shock bodies for corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2300\" data-end=\"2359\"\u003e\n\u003cp data-start=\"2302\" data-end=\"2359\"\u003eCNC aluminum brackets for strength and weight reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2360\" data-end=\"2432\"\u003e\n\u003cp data-start=\"2362\" data-end=\"2432\"\u003eRubber upper mounts for controlled NVH without sacrificing precision\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2434\" data-end=\"2437\"\u003e\n\u003ch3 data-start=\"2439\" data-end=\"2467\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"2469\" data-end=\"2622\"\u003e\n\u003cli data-start=\"2469\" data-end=\"2531\"\u003e\n\u003cp data-start=\"2471\" data-end=\"2531\"\u003e\u003cstrong data-start=\"2471\" data-end=\"2488\"\u003eSpring Rates:\u003c\/strong\u003e\u003cbr data-start=\"2488\" data-end=\"2491\"\u003eFront: 9.0 kg\/mm\u003cbr data-start=\"2509\" data-end=\"2512\"\u003eRear: 7.0 kg\/mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2533\" data-end=\"2622\"\u003e\n\u003cp data-start=\"2535\" data-end=\"2622\"\u003e\u003cstrong data-start=\"2535\" data-end=\"2553\"\u003eSpring Length:\u003c\/strong\u003e\u003cbr data-start=\"2553\" data-end=\"2556\"\u003eFront: 220mm (straight barrel)\u003cbr data-start=\"2588\" data-end=\"2591\"\u003eRear: 170mm (straight barrel)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":51339476533569,"sku":"80300-AF009","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/5850\/0417\/files\/80300-AF009.png?v=1769713181","url":"https:\/\/kcgmotorsports.com\/products\/hks-hipermax-s-coilovers-for-2015-2021-subaru-wrx-sti","provider":"KCG Motorsports ","version":"1.0","type":"link"}