{"product_id":"rs-r-best-i-active-coilovers-2015-lexus-rc300-f-sport-rwd-gsc10","title":"RS-R Best-i Active Coilovers for 2015+ Lexus RC300 F Sport RWD (GSC10)","description":"\u003cp\u003eRS-R Best-i Active coilovers for the 2015+ Lexus RC300 F Sport RWD (GSC10) are built for a very specific problem: replacing a factory-adaptive damper without losing the factory controller. Best-i Active keeps the OEM AVS\/DDS signal, Ti2000 springs, pillowball uppers, and the full 36-level damper range, all controlled through the car’s original driving-mode button. No warning-light canceler required, no loss of factory modes — you get a proper dropped stance and adjustable damping while the dashboard still behaves like stock.\u003c\/p\u003e\u003cp\u003eBest-i Active is RS-R’s flagship coilover for factory-active suspension cars — the only aftermarket coilover family that retains the OEM AVS\/DDS adaptive damper controller while still delivering a full ride-height drop and 36-level damping. It uses Ti2000 springs, pillowball upper mounts, and a monotube damper body that bolts into the factory harness without a warning-light canceler. If you drive a GS F-Sport, GT-R, IS F-Sport, or similar AVS-equipped chassis, this is the only coilover that keeps the factory driving-mode logic intact.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFactory AVS \/ DDS compatible — no warning-light canceler needed\u003c\/li\u003e\n\u003cli\u003eTi2000 springs for reduced unsprung weight\u003c\/li\u003e\n\u003cli\u003ePillowball-bushing upper mounts (spherical bearing, no camber adjustment)\u003c\/li\u003e\n\u003cli\u003e36-level single-knob damping through factory controller\u003c\/li\u003e\n\u003cli\u003eMonotube, hand-assembled in Japan\u003c\/li\u003e\n\u003cli\u003eRebuildable \/ serviceable dampers\u003c\/li\u003e\n\u003cli\u003e1-Year \/ 12,000-mile RS-R warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eWhat’s Included\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eFull coilover set (front and rear)\u003c\/li\u003e\n\u003cli\u003eHex and allen wrenches\u003c\/li\u003e\n\u003cli\u003eUpper rubber seat for rear\u003c\/li\u003e\n\u003cli\u003eHex nut, bolt and washer for rear shock\u003c\/li\u003e\n\u003cli\u003eWaterproof rubber damper cover\u003c\/li\u003e\n\u003cli\u003eSpring tubes for front and rear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eSpecifications\u003c\/h5\u003e\u003ctable class=\"table table-striped table-primary\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eXLIT104MA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003eRS-R Best-i Active Coilovers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2015+ Lexus RC300 F Sport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Code\u003c\/td\u003e\n\u003ctd\u003eGSC10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrivetrain\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Adjustment\u003c\/td\u003e\n\u003ctd\u003e36-Level Single-Knob\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRide-Height Adjustable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamper Construction\u003c\/td\u003e\n\u003ctd\u003eMonotube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreset Approximate Height - Front\u003c\/td\u003e\n\u003ctd\u003e-30mm to -35mm (-1.2in to -1.4in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreset Approximate Height - Rear\u003c\/td\u003e\n\u003ctd\u003e-20mm to -25mm (-0.8in to -1.0in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Adjustment Range - Front\u003c\/td\u003e\n\u003ctd\u003e+15mm to -105mm (+0.6in to -4.2in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Adjustment Range - Rear\u003c\/td\u003e\n\u003ctd\u003e0mm to -55mm (0in to -2.2in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Adjustment Range - Front\u003c\/td\u003e\n\u003ctd\u003e-5mm to -55mm (-0.2in to -2.2in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Adjustment Range - Rear\u003c\/td\u003e\n\u003ctd\u003e0mm to -55mm (0in to -2.2in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Front\u003c\/td\u003e\n\u003ctd\u003e9.00 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Rear\u003c\/td\u003e\n\u003ctd\u003e9.00 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Mount - Front\u003c\/td\u003e\n\u003ctd\u003ePillowball Bushings (Spherical Bearing, no camber adjustment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Mount - Rear\u003c\/td\u003e\n\u003ctd\u003ePillowball Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuspension Design - Front\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuspension Design - Rear\u003c\/td\u003e\n\u003ctd\u003eDivorced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRebuildable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year \/ 12,000 Miles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e2015 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2016 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2017 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2018 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2019 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2020 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2021 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2022 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2023 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2024 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2025 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003cli\u003e2026 Lexus RC300 F Sport RWD (GSC10)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RS-R","offers":[{"title":"Default Title","offer_id":42079260999740,"sku":"XLIT104MA","price":2399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/rs-r-best-i-active-coilovers-2015-lexus-rc300-f-sport-rwd-gsc10-xlit104ma-1194406666.jpg?v=1767699279","url":"https:\/\/www.springrates.com\/products\/rs-r-best-i-active-coilovers-2015-lexus-rc300-f-sport-rwd-gsc10","provider":"SPRINGRATES®","version":"1.0","type":"link"}