{"product_id":"ast-suspension-5300-series-3-way-coilover-kit-frontrear-top-mounts-2006-2011-bmw-323i-sedan-rwd-e90","title":"AST Suspension 5300 Series 3-Way Coilover Kit (Front\/Rear Top Mounts) - 2006-2011 BMW 323i Sedan RWD (E90)","description":"\u003cp\u003eAre you the ultimate track enthusiast aiming for championship-level performance? The AST 3-WAY Motorsport Suspension for your 2006-2011 BMW 323i Sedan RWD (E90) gives you full control to fine-tune every aspect of your car's handling. This monotube coilover system is 3-way adjustable for rebound, high- and low-speed compression, and ride height. It features external reservoirs, camber-adjustable front top mounts, and solid rear mounts where applicable. With adjustable-rate springs, rebuildable dampers, and precision engineering from the Netherlands, it's built for serious racers. Independently adjust rebound and both compression settings to sharpen response, minimize body roll, and maintain optimal traction. The inverted strut design withstands high cornering and braking forces - delivering the ultimate in control, consistency, and performance on every lap.\u003c\/p\u003e\u003ch3\u003eStandard Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh end, track ready suspension.\u003c\/li\u003e\n\u003cli\u003eRebound, Low \u0026amp; Hi Speed Compression Adjustable ('Triples'), with a remote reservoir.\u003c\/li\u003e\n\u003cli\u003eRemote reservoirs allow additional travel, heat dissipation and oil\/nitrogen gas capacity.\u003c\/li\u003e\n\u003cli\u003e4.5mm diameter shaft struts are inverted and offer exceptional strength, which in turn reduces geometry change under corner and braking monoevers.\u003c\/li\u003e\n\u003cli\u003eAluminum cylinder, threaded body shocks, factory mounting style\u003c\/li\u003e\n\u003cli\u003eNew low friction seal on all AST dampers.\u003c\/li\u003e\n\u003cli\u003eSpherical lower eye shock mounts.\u003c\/li\u003e\n\u003cli\u003eReservoir with hose or piggyback (piggyback examples: 2008 STI; BMW E36 rears).\u003c\/li\u003e\n\u003cli\u003eSpherical upper shock mount assemblies.\u003c\/li\u003e\n\u003cli\u003eSynthetic hydraulic fluid.\u003c\/li\u003e\n\u003cli\u003eOptional DLC (diamond like carbon) 44.5mm inverted shafts.\u003c\/li\u003e\n\u003cli\u003eOptional DDP piston (double digressive piston).\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003eDouble Digressive Pistons are recommended for use on the non-driven wheels.\u003c\/li\u003e\n\u003cli\u003e4WD\/FWD vehicles: DD pistons for both rear axle struts\/shocks.\u003c\/li\u003e\n\u003cli\u003eRWD vehicles: DD pistons for both front axle struts\/shocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eFully serviceable and rebuildable.\u003c\/li\u003e\n\u003cli\u003eRevalveable for specific characteristics.\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\u003eRAC-B1601SD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003e5300 Series Coilovers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2006-2011 BMW 323i Sedan RWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Code\u003c\/td\u003e\n\u003ctd\u003eE90\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\u003eDamping Adjustment\u003c\/td\u003e\n\u003ctd\u003e3-Way\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Includes\u003c\/td\u003e\n\u003ctd\u003e4 Shock Absorbers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Includes\u003c\/td\u003e\n\u003ctd\u003eSprings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eFull Set (Front \u0026amp; Rear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e2006 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003cli\u003e2007 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003cli\u003e2008 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003cli\u003e2009 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003cli\u003e2010 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003cli\u003e2011 BMW 323i Sedan RWD (E90)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AST Suspension","offers":[{"title":"Default Title","offer_id":46148003102780,"sku":"RAC-B1601SD","price":7209.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/RAC-B1601S-0_e137c78d-2832-4513-8f96-33199d0aabe1.png?v=1789073235","url":"https:\/\/www.springrates.com\/products\/ast-suspension-5300-series-3-way-coilover-kit-frontrear-top-mounts-2006-2011-bmw-323i-sedan-rwd-e90","provider":"SPRINGRATES","version":"1.0","type":"link"}