{"product_id":"bc-racing-zr-series-coilovers-2006-2011-bmw-3-series","title":"BC Racing ZR Series Coilovers for 2006-2013 BMW 3 Series Coupe RWD (E92)","description":"\u003cp\u003eBC Racing ZR Series Coilovers for the 2006-2013 BMW 3 Series Coupe (E92) deliver the deepest damping adjustability in BC Racing's lineup, with Swift Springs included standard and three axes of independent tuning for competitive track programs. Every kit is extensively tested on the E92 chassis and refined until it balances ride quality with performance — the reason 3 Series Coupe coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.\u003c\/p\u003e\n\u003cp\u003eZR Series kits use an inverted mono-tube damper with a linear twin-piston design, feeding three independent adjustment circuits. Swift Springs come standard — not as an upgrade — and the kit is race-tuned out of the box. The off-the-shelf setup from BC Racing is deliberately balanced — spring rates and valving chosen so the kit feels comfortable day-to-day without giving up performance when you push it. Drivers who want a different recipe can spec Swift Springs, custom spring rates, or fully custom valving at checkout; BC will tune the dampers to match, which is a depth of customization most brands only offer on their top-tier kits.\u003c\/p\u003e\n\u003cp\u003eBC Racing has been manufacturing adjustable coilovers since 2004 and is one of the most popular coilover brands in the automotive tuning industry for a reason: competitive pricing, deep customization, proven reliability, and a fully rebuildable damper design that lasts years instead of seasons. These 3 Series Coupe coilovers arrive tuned for the E92 chassis and ready to bolt in — no break-in period, no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts — no unit replacement required when it's time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e30-level rebound adjustment\u003c\/li\u003e\n\u003cli\u003e15-level low-speed compression adjustment\u003c\/li\u003e\n\u003cli\u003e12-level high-speed compression adjustment\u003c\/li\u003e\n\u003cli\u003eInverted mono-tube damper with twin-piston design\u003c\/li\u003e\n\u003cli\u003eSwift Springs come standard\u003c\/li\u003e\n\u003cli\u003eRide height adjustable independent of spring preload\u003c\/li\u003e\n\u003cli\u003eUpper mount hardware varies by chassis — camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.\u003c\/li\u003e\n\u003cli\u003eCustom spring rates and custom valving available at checkout\u003c\/li\u003e\n\u003cli\u003eFully rebuildable — replacement parts available from BC for the life of the shock\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty against defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable class=\"table table-striped table-primary\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eI-03-ZR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003eZR Series Coilovers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2006-2013 BMW 3 Series Coupe\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\u003eChassis Code\u003c\/td\u003e\n\u003ctd\u003eE92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Adjustment\u003c\/td\u003e\n\u003ctd\u003e3-Way (30 levels rebound\/15 LSC\/12 HSC)\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\u003e5.5 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Rear\u003c\/td\u003e\n\u003ctd\u003e9 kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Size - Front\u003c\/td\u003e\n\u003ctd\u003e62-170-5.5K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Size - Rear\u003c\/td\u003e\n\u003ctd\u003e62-230-9K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwift Springs - Front\u003c\/td\u003e\n\u003ctd\u003e62-152-X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwift Springs - Rear\u003c\/td\u003e\n\u003ctd\u003e62-228-X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Front\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Rear\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\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\u003eNotes\u003c\/td\u003e\n\u003ctd\u003e\u003cul\u003e\n\u003cli\u003eInverted Front\u003c\/li\u003e\n\u003cli\u003ePillowball Rear Top Mounts are not available\u003c\/li\u003e\n\u003cli\u003eThe ZR Series is not available in Extreme-Low configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e2006 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2007 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2008 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2009 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2010 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2011 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2012 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003cli\u003e2013 BMW 3 Series Coupe RWD (E92)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":42538696540220,"sku":"I-03-ZR","price":2845.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/bc-racing-zr-series-coilovers-for-2006-2013-bmw-3-series-coupe-rwd-e92-i-03-zr-1234613005.jpg?v=1779688276","url":"https:\/\/www.springrates.com\/products\/bc-racing-zr-series-coilovers-2006-2011-bmw-3-series","provider":"SPRINGRATES®","version":"1.0","type":"link"}