{"product_id":"bilstein-46-181121-suspension-kit-front-and-rear","title":"Bilstein 46-181121 Suspension Kit - Front and Rear","description":"\u003ch2\u003eBilstein B12 (Pro-Kit) Suspension Kit\u003c\/h2\u003e\u003cp\u003eThe Bilstein B12 (Pro-Kit) suspension kit combines Bilstein Performance dampers with Eibach Pro-Kit springs for a fixed-height lowering setup. This package is tuned for specific applications and delivers a moderate drop of about 24-40 mm, depending on the vehicle.\u003c\/p\u003e\u003cp\u003eBuilt for the BMW 545i and BMW 550i, part number 46-181121 provides a matched suspension solution that balances ride control, stance, and everyday drivability. The monotube damper design and yellow damper finish with dark grey springs identify the B12 (Pro-Kit) series.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete suspension kit with dampers and lowering springs\u003c\/li\u003e\n\u003cli\u003eBilstein monotube internal design for consistent damping response\u003c\/li\u003e\n\u003cli\u003eModerate lowering range of 24-40 mm, application dependent\u003c\/li\u003e\n\u003cli\u003eApplication-specific tuning for fixed ride height\u003c\/li\u003e\n\u003cli\u003eYellow dampers and dark grey springs\u003c\/li\u003e\n\u003cli\u003ePart number 46-181121\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eB12 (Pro-Kit) Product Line Details\u003c\/h2\u003e\u003cp\u003eThe Bilstein B12 (Pro-Kit) line pairs Bilstein dampers with Eibach Pro-Kit springs to create a coordinated suspension package. For BMW 545i and BMW 550i fitments, this approach supports a lower stance without changing the vehicle’s basic suspension layout, making it a direct choice for drivers seeking a controlled drop and a more refined road feel.\u003c\/p\u003e\u003cp\u003eThis part cross-references Eibach part numbers E10-20-011-03-22 and E90-20-011-03-22 for the same application.\u003c\/p\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2004-2005 BMW 545i, front and rear, without electronic or self-leveling suspension.\u003c\/li\u003e\n\u003cli\u003eFits 2006-2010 BMW 550i, front and rear, without electronic or self-leveling suspension.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing worn dampers and springs with a matched suspension kit\u003c\/li\u003e\n\u003cli\u003eLowering ride height on BMW 545i and BMW 550i applications\u003c\/li\u003e\n\u003cli\u003eRestoring consistent damping response after suspension wear\u003c\/li\u003e\n\u003cli\u003eAddressing uneven stance caused by aging springs or dampers\u003c\/li\u003e\n\u003cli\u003eImproving suspension control with a fixed-height setup\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify that the vehicle does not have electronic or self-leveling suspension before ordering. This kit is specified for front and rear installation on the listed BMW applications, and the final ride height will vary by vehicle and configuration within the stated lowering range.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBilstein B12 (Pro-Kit) suspension kits are built around Bilstein Performance dampers and matched springs selected for each application. The monotube damper construction supports consistent performance across the intended fitments.\u003c\/p\u003e","brand":"Bilstein","offers":[{"title":"Default Title","offer_id":52409487786165,"sku":"BBGL-46-181121","price":1148.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/B5_46181121_Fro.jpg?v=1777778470","url":"https:\/\/www.partcatalog.com\/products\/bilstein-46-181121-suspension-kit-front-and-rear","provider":"PartCatalog","version":"1.0","type":"link"}