{"title":"Buick GL8 SGM258 Coilovers \u0026 Suspension","description":"\u003cp\u003eCoilovers and suspension for the Buick GL8 MK3, GL8 Luxury MK2, GL8 MK2 (SGM258, 2011-2016). We list 6 parts for this chassis: 6 coilover kits, from SF Racing. Prices from $995.\u003c\/p\u003e","products":[{"product_id":"sf-racing-sport-coilovers-for-2011-2016-buick-gl8-luxury-mk2-sgm258","title":"SF Racing Sport Coilovers for 2011-2016 Buick GL8 Luxury MK2 (SGM258)","description":"\u003cp\u003eIf you want a lower, tighter 2011-2016 Buick GL8 MK2 (SGM258) without a harsh ride, the SF Racing Sport Coilovers are made for that job: street use, adjustable height and 32 damping settings.\u003c\/p\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\u003cp\u003eUp front it is a true coilover; the rear keeps a divorced layout, with the spring and shock mounted separately like the factory setup. Damper bodies are 52mm front and 46mm rear. It comes with 9 kg\/mm (about 504 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube dampers, which shed heat well and hold their damping under hard use\u003c\/li\u003e\n\u003cli\u003e32 damping settings on a single knob that sets rebound and compression together\u003c\/li\u003e\n\u003cli\u003eIndependent lower mount adjustment keeps spring preload and damper travel where they should be when you change height\u003c\/li\u003e\n\u003cli\u003eAnodized T6-6061 aluminum top mounts, spring perches and collars for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eCold-wound SAE9254 spring steel\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eAdjustable ride height, roughly 1 to 2.5 inches below factory per SF Racing, while keeping suspension travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Fits Luxury model.\u003c\/p\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eBest suited to daily drivers and weekend canyon cars where ride comfort still matters.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-04-SP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2011-2016 Buick GL8 MK2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSport Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 46mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFits Luxury model.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656213594413,"sku":"SF-BU09-04-SP","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-sport-coilovers-for-2011-2016-buick-gl8-luxury-mk2-sgm258-sf-bu09-04-sp-1194302080.jpg?v=1792164939"},{"product_id":"sf-racing-sport-coilovers-for-2011-2016-buick-gl8-mk2-sgm258","title":"SF Racing Sport Coilovers for 2011-2016 Buick GL8 MK2 (SGM258)","description":"\u003cp\u003eBuilt for daily-driven cars, this SF Racing Sport kit replaces the factory struts and springs on the 2011-2016 Buick GL8 MK2 (SGM258) with height-adjustable coilovers and single-knob damping adjustment.\u003c\/p\u003e\n\u003ch3\u003e2011-2016 Buick GL8 MK2 setup details\u003c\/h3\u003e\u003cp\u003eThe front uses true coilovers, while the rear stays divorced (separate spring and shock), matching how the car is built from the factory. Damper bodies are 52mm front and 46mm rear. It comes with 9 kg\/mm (about 504 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube damper design for better heat control and fewer leaks\u003c\/li\u003e\n\u003cli\u003e32 damping settings on a single knob that sets rebound and compression together\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eRide height lowers roughly 1 to 2.5 inches below stock (SF Racing's figure) without giving up suspension travel\u003c\/li\u003e\n\u003cli\u003eIndependent lower mount adjustment keeps spring preload and damper travel where they should be when you change height\u003c\/li\u003e\n\u003cli\u003eT6-6061 aluminum hardware (top mounts, perches and collars), anodized against corrosion\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eSAE9254 cold-wound springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Base model. Rear Multi-Link.\u003c\/p\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eIdeal for street cars that need a sensible drop and some tuning range, without going to track-level stiffness.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-03-SP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2011-2016 Buick GL8 MK2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSport Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 46mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase model. Rear Multi-Link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656230863149,"sku":"SF-BU09-03-SP","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-sport-coilovers-for-2011-2016-buick-gl8-mk2-sgm258-sf-bu09-03-sp-1194300455.jpg?v=1792165498"},{"product_id":"sf-racing-track-coilovers-for-2011-2016-buick-gl8-mk2-sgm258","title":"SF Racing Track Coilovers for 2011-2016 Buick GL8 MK2 (SGM258)","description":"\u003cp\u003eThis is SF Racing's track-oriented coilover kit for the 2011-2016 Buick GL8 MK2 (SGM258): height-adjustable, 32-way damping and valving tuned for hard driving at the circuit or on back roads.\u003c\/p\u003e\n\u003ch3\u003e2011-2016 Buick GL8 MK2 setup details\u003c\/h3\u003e\u003cp\u003eUp front it is a true coilover; the rear keeps a divorced layout, with the spring and shock mounted separately like the factory setup. Damper bodies are 52mm front and 46mm rear. It comes with 9 kg\/mm (about 504 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube dampers, which shed heat well and hold their damping under hard use\u003c\/li\u003e\n\u003cli\u003e32 damping settings on a single knob that sets rebound and compression together\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil (20W)\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eAdjustable ride height, roughly 1 to 2.5 inches below factory per SF Racing, while keeping suspension travel\u003c\/li\u003e\n\u003cli\u003eSeparate lower-mount (length) adjustment, so height changes don't preload the spring\u003c\/li\u003e\n\u003cli\u003eAnodized T6-6061 aluminum top mounts, spring perches and collars for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eCold-wound SAE9254 spring steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Base model. Rear Multi-Link.\u003c\/p\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eA good fit for dual-duty cars that commute during the week and hit the track on weekends.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-03-TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2011-2016 Buick GL8 MK2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrack Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 46mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase model. Rear Multi-Link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656291909933,"sku":"SF-BU09-03-TR","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-track-coilovers-for-2011-2016-buick-gl8-mk2-sgm258-sf-bu09-03-tr-1194294287.jpg?v=1792167364"},{"product_id":"sf-racing-track-coilovers-for-2011-2016-buick-gl8-luxury-mk2-sgm258","title":"SF Racing Track Coilovers for 2011-2016 Buick GL8 Luxury MK2 (SGM258)","description":"\u003cp\u003eFor a 2011-2016 Buick GL8 MK2 (SGM258) that sees track days as well as the commute, the SF Racing Track Coilovers add firmer valving on top of full height and damping adjustment.\u003c\/p\u003e\n\u003ch3\u003e2011-2016 Buick GL8 MK2 setup details\u003c\/h3\u003e\u003cp\u003eUp front it is a true coilover; the rear keeps a divorced layout, with the spring and shock mounted separately like the factory setup. Damper bodies are 52mm front and 46mm rear. It comes with 9 kg\/mm (about 504 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube dampers, which shed heat well and hold their damping under hard use\u003c\/li\u003e\n\u003cli\u003e32-level damping adjustment, rebound and compression combined on one adjuster\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eRide height lowers roughly 1 to 2.5 inches below stock (SF Racing's figure) without giving up suspension travel\u003c\/li\u003e\n\u003cli\u003eIndependent lower mount adjustment keeps spring preload and damper travel where they should be when you change height\u003c\/li\u003e\n\u003cli\u003eT6-6061 aluminum hardware (top mounts, perches and collars), anodized against corrosion\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eCold-wound SAE9254 spring steel\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil (20W)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Fits Luxury model.\u003c\/p\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eA good fit for dual-duty cars that commute during the week and hit the track on weekends.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-04-TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2011-2016 Buick GL8 MK2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrack Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 46mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFits Luxury model.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656296530221,"sku":"SF-BU09-04-TR","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-track-coilovers-for-2011-2016-buick-gl8-luxury-mk2-sgm258-sf-bu09-04-tr-1194293534.jpg?v=1792167437"},{"product_id":"sf-racing-track-coilovers-for-2017-buick-gl8-mk3-sgm258","title":"SF Racing Track Coilovers for 2017+ Buick GL8 MK3 (SGM258)","description":"\u003cp\u003eFor a 2017+ Buick GL8 MK3 (SGM258) that sees track days as well as the commute, the SF Racing Track Coilovers add firmer valving on top of full height and damping adjustment.\u003c\/p\u003e\n\u003ch3\u003e2017+ Buick GL8 MK3 (SGM258) setup details\u003c\/h3\u003e\u003cp\u003eUp front it is a true coilover; the rear keeps a divorced layout, with the spring and shock mounted separately like the factory setup. Damper bodies are 52mm front and 50mm rear. It comes with 8 kg\/mm (about 448 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube damper design for better heat control and fewer leaks\u003c\/li\u003e\n\u003cli\u003e32 damping settings on a single knob that sets rebound and compression together\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eAdjustable ride height, roughly 1 to 2.5 inches below factory per SF Racing, while keeping suspension travel\u003c\/li\u003e\n\u003cli\u003eSeparate lower-mount (length) adjustment, so height changes don't preload the spring\u003c\/li\u003e\n\u003cli\u003eAnodized T6-6061 aluminum top mounts, spring perches and collars for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eSAE9254 cold-wound springs\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil (20W)\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eA good fit for dual-duty cars that commute during the week and hit the track on weekends.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-05-TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2017+ Buick GL8 MK3 (SGM258)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrack Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 50mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656313176365,"sku":"SF-BU09-05-TR","price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-track-coilovers-for-2017-buick-gl8-mk3-sgm258-sf-bu09-05-tr-1194291525.jpg?v=1792167898"},{"product_id":"sf-racing-sport-coilovers-for-2017-buick-gl8-mk3-sgm258","title":"SF Racing Sport Coilovers for 2017+ Buick GL8 MK3 (SGM258)","description":"\u003cp\u003eBuilt for daily-driven cars, this SF Racing Sport kit replaces the factory struts and springs on the 2017+ Buick GL8 MK3 (SGM258) with height-adjustable coilovers and single-knob damping adjustment.\u003c\/p\u003e\n\u003ch3\u003eHow this kit is set up for the 2017+ Buick GL8 MK3 (SGM258)\u003c\/h3\u003e\u003cp\u003eUp front it is a true coilover; the rear keeps a divorced layout, with the spring and shock mounted separately like the factory setup. Damper bodies are 52mm front and 50mm rear. It comes with 8 kg\/mm (about 448 lb\/in) springs up front and 8 kg\/mm (about 448 lb\/in) at the rear. Damping is 1-way: a single knob with 32 settings changes rebound and compression together, which keeps tuning quick. The front top mounts are aluminum with rubber bushings.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMonotube damper design for better heat control and fewer leaks\u003c\/li\u003e\n\u003cli\u003e32-level damping adjustment, rebound and compression combined on one adjuster\u003c\/li\u003e\n\u003cli\u003eIndependent lower mount adjustment keeps spring preload and damper travel where they should be when you change height\u003c\/li\u003e\n\u003cli\u003eAnodized T6-6061 aluminum top mounts, spring perches and collars for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eZinc-plated shock bodies for rust protection\u003c\/li\u003e\n\u003cli\u003eCold-wound SAE9254 spring steel\u003c\/li\u003e\n\u003cli\u003eNOK seals and Italian IP damping oil\u003c\/li\u003e\n\u003cli\u003eBuilt-in dust boots and bump stops\u003c\/li\u003e\n\u003cli\u003eBolt-on install with no modifications, unless the notes below say otherwise\u003c\/li\u003e\n\u003cli\u003eRide height lowers roughly 1 to 2.5 inches below stock (SF Racing's figure) without giving up suspension travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho it suits\u003c\/h3\u003e\u003cp\u003eBest suited to daily drivers and weekend canyon cars where ride comfort still matters.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSF-BU09-05-SP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2017+ Buick GL8 MK3 (SGM258)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSGM258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSport Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Way: Rebound and Compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper size (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52mm diameter \/ 50mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring rate (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 kg\/mm \/ 8 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign (front \/ rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover \/ Divorced (Separate shock and spring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (front)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum with Rubber Bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop mounts (rear)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"SPRINGRATES®","offers":[{"title":"Default Title","offer_id":67656362131757,"sku":"SF-BU09-05-SP","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/8295\/1469\/files\/sf-racing-sport-coilovers-for-2017-buick-gl8-mk3-sgm258-sf-bu09-05-sp-1194289411.jpg?v=1792170400"}],"url":"https:\/\/lowerhq.com\/collections\/buick-gl8-sgm258-coilovers-suspension.oembed","provider":"LowerHQ","version":"1.0","type":"link"}