{"product_id":"ast-suspension-bmw-m5-g99-adjustable-lowering-springs","title":"AST Suspension BMW M5 G99 Adjustable Lowering Springs","description":"\u003cp\u003eThis AST Suspension BMW M5 G99 Adjustable Lowering Springs is a vehicle-specific adjustable lowering spring set. Match the exact chassis, drivetrain, body style, factory damper or air-suspension configuration, adjustment range, and every application note before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAdjustable Height: Threaded perches deliver 10-30mm front and 20-45mm rear drop for custom stance and alignment adjustments.\u003c\/li\u003e\n\u003cli\u003eChrome Silicon Steel: High-tensile progressive wound construction resists sagging under high-speed track loads.\u003c\/li\u003e\n\u003cli\u003eLinear Spring Rates: Front 6.8 kg\/mm rear 11.2 kg\/mm ensure balanced response and comfort matching OEM ride quality.\u003c\/li\u003e\n\u003cli\u003eDirect Fitment: Engineered for BMW M5 G99 OEM strut mounts requires no additional hardware.\u003c\/li\u003e\n\u003cli\u003eCorrosion Resistant: Dual-layer powder coat and e-coat finish protects against road salt and harsh conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e2025-2026\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003eSedan\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAST Suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eASTALS-21-021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eLowering Springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eBMW M5 G99 Adjustable Lowering Springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustable Height\u003c\/th\u003e\n\u003ctd\u003eThreaded perches deliver 10-30mm front and 20-45mm rear drop for custom stance and alignment adjustments.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLinear Spring Rates\u003c\/th\u003e\n\u003ctd\u003eFront 6.8 kg\/mm rear 11.2 kg\/mm ensure balanced response and comfort matching OEM ride quality.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKey Features Adjustable Height\u003c\/th\u003e\n\u003ctd\u003eThreaded perches deliver 10-30mm front and 20-45mm rear drop for custom stance and alignment adjustments.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOne new AST Suspension product in the exact part number, dimensions, rate, adjustment specification, and quantity identified on this page. Springs, dampers, top mounts, reservoirs, adjusters, links, tools, lines, fittings, and hardware are included only when expressly stated for this exact configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout AST Suspension\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAST Suspension develops performance springs, dampers, coilovers, top mounts, and motorsport suspension components. Vehicle fitment, dimensions, rates, adjustment functions, and included components remain exact-part specific.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated Parts\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/collections\/ast\"\u003eShop the complete AST Suspension collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/collections\/suspension\"\u003eShop suspension components\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/products\/ast-bmw-f90-m5-adjustable-lowering-springs\"\u003eAST BMW F90 M5 Adjustable Lowering Springs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/products\/ast-suspension-bmw-m5-g90-adjustable-lowering-springs\"\u003eAST Suspension BMW M5 G90 Adjustable Lowering Springs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ca\/products\/ast-01-1988-03-1997-bmw-5-lowering-springs-35mm-35mm\"\u003eAST 01\/1988-03\/1997 BMW 5 Lowering Springs - 35mm\/35mm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm the correct adjustable spring kit?\u003c\/strong\u003e\u003cbr\u003eMatch the exact vehicle, chassis, drivetrain, body style, factory damper or air-suspension setup, axle configuration, and AST part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan ride height be changed after installation?\u003c\/strong\u003e\u003cbr\u003eThe supplied adjustment hardware is designed to fine-tune ride height within the stated range. The vehicle must be safely supported and the current AST procedure followed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the vehicle need an alignment?\u003c\/strong\u003e\u003cbr\u003eYes. Settle and measure the final ride height, then align the vehicle and verify suspension, tire, wheel, and brake-line clearance through full travel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit replace the factory dampers?\u003c\/strong\u003e\u003cbr\u003eNot unless the exact listing expressly includes dampers. Adjustable lowering spring kits normally retain the compatible damper arrangement identified for that part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation Instructions\u003c\/strong\u003e\u003c\/p\u003e\u003col\u003e\n\u003cli\u003eConfirm the exact AST part number, complete application or dimensional specification, included components, and current instructions before disassembly.\u003c\/li\u003e\n\u003cli\u003eSupport the vehicle at approved points and record the original ride height, alignment, suspension orientation, and adjustment settings.\u003c\/li\u003e\n\u003cli\u003eInstall components in the specified position and sequence using correct spring-compression, torque, preload, ride-height, and damper setup procedures.\u003c\/li\u003e\n\u003cli\u003eVerify full suspension and steering travel, tire and wheel clearance, brake-line routing, fastener torque, and damper operation.\u003c\/li\u003e\n\u003cli\u003eSettle the suspension, measure final ride height, complete a professional alignment, and recheck the installation after the initial driving cycles.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"AST","offers":[{"title":"Default Title","offer_id":43826077204559,"sku":"ASTASTALS-21-021","price":1332.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/ast-astastals-21-021-product-image-01-5728671823.png?v=1790716602","url":"https:\/\/www.blackopsautoworks.com\/en-ca\/products\/ast-suspension-bmw-m5-g99-adjustable-lowering-springs","provider":"Black Ops Auto Works","version":"1.0","type":"link"}