{"product_id":"riaction-gt1-coilovers-for-2011-mercedes-benz-slk-r172","title":"Riaction GT1 Coilovers for 2011+ Mercedes-Benz SLK (R172)","description":"\u003cp\u003eThe Riaction GT1 Coilovers for the 2011+ Mercedes-Benz SLK R172 deliver a premium, adjustable suspension upgrade built for drivers who want more from their SLK R172 than the factory setup can offer. These Mercedes-Benz SLK coilovers are engineered to pair street comfort with canyon and track capability, giving you the stance, handling, and adjustability you've been chasing without compromising daily driveability. Whether you track your R172 SLK on weekends or log daily miles, this R172 coilover kit dials in ride height and damping to match how you actually use the car.\u003c\/p\u003e\n\u003cp\u003eEvery GT1 set features a monotube damper with 32 levels of damping adjustment, so you can tune ride quality to match the road, the weather, or your driving mood. Full-length ride-height adjustment separates preload from ride height — meaning you can drop the SLK R172 to the height you want while preserving spring travel and shock stroke. Riaction coilovers for the 2011+ Mercedes-Benz SLK are fully rebuildable and backed by a 2-year warranty, making the GT1 a long-term suspension investment rather than a disposable upgrade.\u003c\/p\u003e\n\u003ch3\u003eGT1 Series Technology\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonotube linear damper with seamless 52mm electroplated carbon steel body\u003c\/li\u003e\n\u003cli\u003e32-level damping adjustment (1-Way)\u003c\/li\u003e\n\u003cli\u003e44mm CNC-machined 6061 aluminum high-flow piston\u003c\/li\u003e\n\u003cli\u003e20mm piston rod for MacPherson applications \/ 14mm for non-MacPherson\u003c\/li\u003e\n\u003cli\u003eSAE9254 cold-wound linear main springs\u003c\/li\u003e\n\u003cli\u003eMulti-thickness valving shims for consistent damping\u003c\/li\u003e\n\u003cli\u003ePolyurethane oil seals and 7.5W suspension fluid\u003c\/li\u003e\n\u003cli\u003eLow-gas-pressure design for improved compliance\u003c\/li\u003e\n\u003cli\u003eFully rebuildable — built to be serviced, not replaced\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull-length ride-height adjustment (preload-independent)\u003c\/li\u003e\n\u003cli\u003e32 levels of damping adjustment\u003c\/li\u003e\n\u003cli\u003eOptional Swift Springs upgrade (sold separately)\u003c\/li\u003e\n\u003cli\u003e2-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable class=\"table table-striped table-primary\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMZ-018-SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003eRiaction GT1 Coilovers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2011+ Mercedes-Benz SLK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Code\u003c\/td\u003e\n\u003ctd\u003eR172\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Type\u003c\/td\u003e\n\u003ctd\u003e1-Way\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\u003eSpring Rate - Front\u003c\/td\u003e\n\u003ctd\u003e8 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Rear\u003c\/td\u003e\n\u003ctd\u003e11 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Mounts - Front\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Mounts - Rear\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Front\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Rear\u003c\/td\u003e\n\u003ctd\u003eNo\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\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e2011 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2012 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2013 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2014 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2015 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2016 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2017 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2018 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2019 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2020 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2021 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2022 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2023 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2024 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2025 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003cli\u003e2026 Mercedes-Benz SLK (R172)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Riaction","offers":[{"title":"Default Title","offer_id":44203248353340,"sku":"MZ-018-SS","price":1080.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/riaction-generic-true-coilover.jpg?v=1776390787","url":"https:\/\/www.springrates.com\/products\/riaction-gt1-coilovers-for-2011-mercedes-benz-slk-r172","provider":"SPRINGRATES®","version":"1.0","type":"link"}