{"product_id":"10mm-85a-polyurethane-rear-shock-mounts-for-bmw-e46-e36-e30-z3-e36-z4-e85-e86-replace-for-33521128734-33521128819-33526772864","title":"BMW 3 Series E30 E36 E46 \/ Z3 \/ Z4 E85 E86 Aluminum 85A Polyurethane Rear Shock Mounts 10mm 1986 - 2008","description":"\u003cp\u003e\nFactory rubber upper rear shock mounts deflect under load, compromising rear shock damping performance and introducing rear end knocking as the rubber ages and degrades — a problem that becomes significantly more pronounced on modified suspensions with increased shock valving. These aluminum and steel rear shock mounts with 85A polyurethane bushings virtually eliminate that deflection, keeping the rear shock absorber correctly positioned so it can operate as intended. Polyurethane offers lower compression variability, higher stability, and greater resistance to shock and ageing compared to standard rubber, making these mounts a meaningful performance and durability upgrade for both street and modified applications. Designed for 10mm shock shaft diameters and compatible with a wide range of OE and aftermarket shock absorber systems.\n\u003c\/p\u003e\n\n\u003ch6\u003eFeatures:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eVirtually eliminates factory shock mount deflection under load – keeps the rear shock absorber correctly positioned for proper damping operation\u003c\/li\u003e\n\u003cli\u003e85A polyurethane bushings offer lower compression variability, high stability, shock resistance, and superior ageing resistance compared to standard rubber\u003c\/li\u003e\n\u003cli\u003eAluminum and steel construction prevents breakage above the rear shock absorbers and provides long-term structural integrity\u003c\/li\u003e\n\u003cli\u003eEliminates rear end knocking caused by worn or degraded factory rubber shock mount bushings\u003c\/li\u003e\n\u003cli\u003eHard-anodized surface finish for corrosion and abrasion resistance in underbody conditions\u003c\/li\u003e\n\u003cli\u003e10mm inner sleeve diameter – compatible with OE shocks and a wide range of aftermarket coilover systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eSpecifications:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eCondition: 100% Brand New\u003c\/li\u003e\n\u003cli\u003eType: Rear Shock Mounts\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum · Steel · Polyurethane\u003c\/li\u003e\n\u003cli\u003eSurface Finish: Anodized\u003c\/li\u003e\n\u003cli\u003eBushing Hardness: 85A Shore\u003c\/li\u003e\n\u003cli\u003eShock Shaft Diameter: 10mm\u003c\/li\u003e\n\u003cli\u003eNVH Impact: Medium – will amplify road imperfections\u003c\/li\u003e\n\u003cli\u003eRecommended Use: Street\u003c\/li\u003e\n\u003cli\u003eItem Weight: 0.51 kg\u003c\/li\u003e\n\u003cli\u003eOEM Replacement Part Numbers: 33521092362 · 33521137972 · 33521128734 · 33521128819 · 33526772864 · 33521125554 · 33521123351 · 33526779670 · 37121133412\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eFitment:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 3 Series E30 323 · 325 (1986–1991)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E30 M3 (1986–1991)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E36 323i · 325i · 328i (1992–1999)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E36 M3 (1995–1999)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E46 320i · 323i · 325i · 328i · 330i (1999–2006)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E46 M3 (2001–2006)\u003c\/li\u003e\n\u003cli\u003eBMW Z3 2.5 · 2.8 · 3.0i (1996–2002)\u003c\/li\u003e\n\u003cli\u003eBMW Z4 E85 · E86 2.5i · 3.0i (2003–2008)\u003c\/li\u003e\n\u003cli\u003eNot compatible with BMW E36 \/ E46 318ti or convertible models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eShock Absorber Compatibility (10mm):\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eOE standard shocks\u003c\/li\u003e\n\u003cli\u003eBilstein PSS9 \/ PSS10\u003c\/li\u003e\n\u003cli\u003eH\u0026amp;R Coilovers\u003c\/li\u003e\n\u003cli\u003eFK Coilovers\u003c\/li\u003e\n\u003cli\u003eRaceland Coilovers\u003c\/li\u003e\n\u003cli\u003eST Coilovers\u003c\/li\u003e\n\u003cli\u003eKW V1 · V2 · V3\u003c\/li\u003e\n\u003cli\u003eKoni Sport \/ Dinan\u003c\/li\u003e\n\u003cli\u003eAST 4XXX \/ 5XXX Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eContents:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e1x Pair Aluminum Rear Shock Mounts with 85A Polyurethane Bushings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eBenefits:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eDramatically reduces rear shock mount deflection for improved damping consistency and rear axle stability\u003c\/li\u003e\n\u003cli\u003eEliminates rear end knocking associated with aged or deteriorated factory rubber mounts\u003c\/li\u003e\n\u003cli\u003ePerformance improvement is most noticeable on modified suspensions with uprated shock valving\u003c\/li\u003e\n\u003cli\u003e85A polyurethane hardness balances performance improvement with acceptable NVH levels for street-driven vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eInstallation Notes:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003ePolyurethane bushings must be greased during installation – do not install dry\u003c\/li\u003e\n\u003cli\u003eThe 10mm sizing refers to the inner diameter of the shock mount sleeve – measure the OD of the top threaded portion of your shock absorber before ordering to confirm correct size\u003c\/li\u003e\n\u003cli\u003eOE shock shaft diameter is 10mm – aftermarket shocks vary and must be measured individually\u003c\/li\u003e\n\u003cli\u003eFor 12mm shock shaft applications (Tein, MCS, JRZ, Ohlins, TC Kline S\/A or D\/A) a 12mm variant is required – this listing is 10mm only\u003c\/li\u003e\n\u003cli\u003eNot compatible with BMW E36 \/ E46 318ti or convertible body styles\u003c\/li\u003e\n\u003cli\u003eIf unsure about your shock shaft diameter, contact our team or check directly with your shock absorber manufacturer before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eWarranty:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e12-month standard warranty from date of purchase\u003c\/li\u003e\n\u003cli\u003eContact our support team for assistance with any issues\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K2 Industries","offers":[{"title":"Red","offer_id":45971594838250,"sku":"1005009562926774-Red","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45971594871018,"sku":"1005009562926774-black","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0477\/0427\/7142\/files\/Scd5e2cd4599848b78d4d481eaa6cb10fD.webp?v=1775129271","url":"https:\/\/www.k2-industries.com\/en-gb\/products\/10mm-85a-polyurethane-rear-shock-mounts-for-bmw-e46-e36-e30-z3-e36-z4-e85-e86-replace-for-33521128734-33521128819-33526772864","provider":"K2 Industries","version":"1.0","type":"link"}