{"product_id":"hks-hipermax-touring-height-adjustable-springs-toyota-gr-supra-a90-a91-bmw-z4-g29","title":"HKS Hipermax Touring Height-Adjustable Springs – Toyota GR Supra A90\/A91 and BMW Z4 M40i G29","description":"\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eMost GR Supras and Z4 M40is leave the factory with electronically controlled adaptive dampers — an expensive, well-sorted system that you lose the moment you fit conventional coilovers. HKS's view was that the best option for many owners is to keep those dampers and just fix the ride height. The Hipermax Touring kit does exactly that: a height-adjustable spring set that works with the factory adaptive dampers, so Comfort and Sport modes keep working exactly as before and no error canceler is needed.\u003c\/p\u003e\n\u003cp\u003eThe kit lowers the car by up to about 45 mm and lets you choose the height you want with the included adjuster, which uses the stock lower spring seat. The springs are a variable-pitch barrel design that steadies the body, and HKS developed a new, more durable rear bump rubber for lowered use. The setup was chosen after testing at Fuji Speedway and Gunma Cycle Sports Center with racing driver Manabu Orido.\u003c\/p\u003e\n\u003cp\u003eThe same kit fits the BMW Z4 M40i (G29), which HKS fitted and confirmed on an actual car — but only Z4s with Adaptive M Suspension. The Z4 is heavier than the Supra, and at HKS's factory height its front aluminum undercover sits 93 mm off the ground.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: height-adjustable spring kit for use with the factory adaptive dampers\u003c\/li\u003e\n\u003cli\u003eSpring rates: front 43 N\/mm (4.3 kgf\/mm), rear 117 N\/mm (11.9 kgf\/mm)\u003c\/li\u003e\n\u003cli\u003eSpring type: variable-pitch barrel, HKS special length\u003c\/li\u003e\n\u003cli\u003eRide height adjuster works with the stock lower spring seat\u003c\/li\u003e\n\u003cli\u003eHKS rear bump rubber developed for lowered use\u003c\/li\u003e\n\u003cli\u003eGR Supra 3.0 (DB42): front −25 mm default (−25 to −48 mm), rear −20 mm default (−20 to −53 mm)\u003c\/li\u003e\n\u003cli\u003eGR Supra 3.0 (DB02): front −29 mm default (−29 to −52 mm), rear −24 mm default (−24 to −57 mm)\u003c\/li\u003e\n\u003cli\u003eGR Supra 3.0 manual (DB06): front −25 mm default (−25 to −52 mm), rear −18 mm default (−18 to −55 mm)\u003c\/li\u003e\n\u003cli\u003eGR Supra 2.0 (DB22): front −16 mm (−16 to −39 mm), rear −19 mm (−19 to −52 mm); HKS recommended setting F −18 \/ R −19 mm\u003c\/li\u003e\n\u003cli\u003eBMW Z4 M40i (G29): front −21 mm default (−21 to −44 mm), rear −19 mm default (−19 to −52 mm)\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFront and rear HKS springs (set of four)\u003c\/li\u003e\n\u003cli\u003eRide height adjusters\u003c\/li\u003e\n\u003cli\u003eHKS rear bump rubbers\u003c\/li\u003e\n\u003cli\u003eHKS installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired extras:\u003c\/strong\u003e none. The factory adaptive dampers and their wiring stay in place, so the Suspension Error Canceler is NOT required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust boots:\u003c\/strong\u003e the stock dust boot will not fit with this kit. HKS makes a dedicated boot for owners who want one — ask us to add it to your order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired after install:\u003c\/strong\u003e a full four-wheel alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation manual (HKS):\u003c\/strong\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/hks-80280-AT001-hipermax-touring-installation-manual.pdf?v=1793227648\"\u003e80280-AT001 Hipermax Touring installation manual (PDF)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation notes:\u003c\/strong\u003e professional installation recommended. The factory springs are swapped on the factory dampers, the bump rubber is modified per the manual (required on GR Supra 3.0 DB42 \/ DB02 and Z4), and ride height is set at the adjuster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ4 note:\u003c\/strong\u003e only for Z4 M40i cars with Adaptive M Suspension. HKS warns that raising the Z4 above its factory setting can let the spring coils bind at full bump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for:\u003c\/strong\u003e GR Supra 2.0 with conventional (non-adaptive) dampers (DB82). For those cars, see the \u003ca href=\"https:\/\/speedlogicauto.com\/products\/hks-hipermax-s-coilovers-toyota-gr-supra-a90-a91\"\u003eHKS Hipermax S coilovers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADAS:\u003c\/strong\u003e have the Toyota Safety Sense \/ BMW driver-assist radar and camera calibration checked after lowering.\u003c\/li\u003e\n\u003cli\u003ePrice is for the item only; labor is not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80280-AT001\u003c\/strong\u003e — HKS Hipermax Touring Height-Adjustable Spring, Toyota GR Supra and BMW Z4 M40i (G29)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra 3.0 (automatic)\u003c\/td\u003e\n\u003ctd\u003eA90\/A91 (DB42 \/ DB02)\u003c\/td\u003e\n\u003ctd\u003eB58 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2020+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra 3.0 (6-speed manual)\u003c\/td\u003e\n\u003ctd\u003eA90 (DB06)\u003c\/td\u003e\n\u003ctd\u003eB58 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2023+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra 2.0 (adaptive dampers)\u003c\/td\u003e\n\u003ctd\u003eA90 (DB22)\u003c\/td\u003e\n\u003ctd\u003eB48 2.0L Turbo I4\u003c\/td\u003e\n\u003ctd\u003e2021+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4 M40i (Adaptive M Suspension)\u003c\/td\u003e\n\u003ctd\u003eG29\u003c\/td\u003e\n\u003ctd\u003eB58 3.0L Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2019+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"HKS","offers":[{"title":"Hipermax Touring spring set, GR Supra and Z4 M40i (80280-AT001)","offer_id":53074752995608,"sku":"80280-AT001","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/0jIUz634dsrqVvFhl4YmPK77mYCBWC3QZWsFGG2E.jpg?v=1793227925","url":"https:\/\/speedlogicauto.com\/products\/hks-hipermax-touring-height-adjustable-springs-toyota-gr-supra-a90-a91-bmw-z4-g29","provider":"SPEED LOGIC","version":"1.0","type":"link"}