{"product_id":"h-r-sport-spring-kit-bmw-1m-coupe-e82","title":"H\u0026R Sport Spring Kit – BMW 1M Coupe (E82, N54)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eH\u0026amp;R Sport Springs for the BMW 1 Series M (E82) are a purpose-built, single-application spring set — H\u0026amp;R does not simply reuse the 135i spring on the 1M's unique chassis and wider track. Replacing the factory coils lowers the car's center of gravity and tightens body control, sharpening turn-in and reducing roll on a car that already has one of BMW's most focused factory chassis setups.\u003c\/p\u003e\n\u003cp\u003eThe progressive spring rate is roughly 10–20% up on stock, so ride quality stays streetable while control firms up under load. H\u0026amp;R lists an average lowering of approximately 1.5–1.8 inches for this application.\u003c\/p\u003e\n\u003cp\u003eEvery H\u0026amp;R spring is cold-wound in-house from 54SiCr6 alloy spring steel and shot-peened to increase service life by more than 200%, so the set resists sag and settling. Each spring is 100% tested before leaving H\u0026amp;R's ISO 9001-certified plant in Germany, and the range carries TÜV approval.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAverage lowering: approximately 1.5–1.8\" (H\u0026amp;R factory figure, front and rear combined)\u003c\/li\u003e\n\u003cli\u003eProgressive spring rates, increased approximately 10–20% over stock\u003c\/li\u003e\n\u003cli\u003eSpring material: 54SiCr6 alloy spring steel, cold-wound\u003c\/li\u003e\n\u003cli\u003eShot-peened to increase service life by more than 200%\u003c\/li\u003e\n\u003cli\u003eWill not settle or sag in service\u003c\/li\u003e\n\u003cli\u003eEvery spring 100% tested before leaving H\u0026amp;R's ISO 9001-certified production facility in Germany\u003c\/li\u003e\n\u003cli\u003eQuality certification: TÜV and ISO 9001\u003c\/li\u003e\n\u003cli\u003eWarranty: H\u0026amp;R covers springs for the duration of the original purchaser's ownership of the vehicle the springs are installed on\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComplete H\u0026amp;R spring set (4 springs) as supplied by H\u0026amp;R Special Springs.\u003c\/li\u003e\n\u003cli\u003eSee the fitting instructions supplied in the box for the full bill of materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring compressor.\u003c\/strong\u003e A spring-only kit requires the struts to be disassembled, which needs a proper coil-spring compressor. Installer-supplied.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-wheel alignment.\u003c\/strong\u003e H\u0026amp;R requires the alignment to be checked and reset any time ride height is changed. Budget for this before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional installation.\u003c\/strong\u003e H\u0026amp;R states its springs and suspensions should be installed by professional suspension mechanics only. Improper installation voids the H\u0026amp;R warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel and tire clearance check.\u003c\/strong\u003e Verify clearance at the fender, strut and inner arch at full lock and full compression, particularly with aftermarket wheel and tire packages on the 1M's wide factory track.\u003c\/li\u003e\n\u003cli\u003eOptional: matched sport-valved dampers, since a lowered car holds up better on a damper valved for the shorter spring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/hr-springs-technical-installation-information.pdf?v=1787168924\" target=\"_blank\" rel=\"noopener\"\u003eH\u0026amp;R Technical Information \u0026amp; Installation Guide (PDF)\u003c\/a\u003e — spring identification and markings, dead and tender coils, ride-height measurement, bump-stop trim chart by part number, and alignment requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/hr-springs-warranty-and-claims.pdf?v=1787169177\" target=\"_blank\" rel=\"noopener\"\u003eH\u0026amp;R Warranties \u0026amp; Claims (PDF)\u003c\/a\u003e — official H\u0026amp;R warranty terms, coverage periods and claim procedure.\u003c\/li\u003e\n\u003cli\u003eVehicle-specific fitting instructions are supplied in the box with the spring set. H\u0026amp;R does not publish a separate per-application installation PDF for this part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eThe 1 Series M (E82) was built for a single model year — 2011 only — and BMW never offered it with xDrive, so no drivetrain-exclusivity tag applies. Lowering figures are H\u0026amp;R factory approximations and vary with the car's options and starting ride height; confirm exact fitment with Speed Logic before ordering.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003e28910-1\u003c\/strong\u003e — H\u0026amp;R Sport Spring set, BMW 1 Series M (E82)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e1 Series M Coupe\u003c\/td\u003e\n\u003ctd\u003eE82\u003c\/td\u003e\n\u003ctd\u003eN54 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"H\u0026R Springs","offers":[{"title":"Default Title","offer_id":52599827726616,"sku":"28910-1","price":390.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/SportSprings_e77b349a-6821-4fa3-a1c1-adad9c47111d.jpg?v=1788306980","url":"https:\/\/speedlogicauto.com\/products\/h-r-sport-spring-kit-bmw-1m-coupe-e82","provider":"SPEED LOGIC","version":"1.0","type":"link"}