{"title":"Suspension Springs","description":null,"products":[{"product_id":"spring-perch-collar-isfm9z","title":"Spring Perch Collar","description":"\u003cp\u003e\u003cstrong\u003eSpring Perch Collar\u003c\/strong\u003e is a suspension springs from Silver's North America designed for performance-focused fitment and handling.\u003c\/p\u003eReplacement Spring Perch","brand":"Silvers North America","offers":[{"title":"Default Title","offer_id":52485915836714,"sku":"SPC","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/9ytyp4xy9h98_4cc4595d-529f-4a64-a27d-92dad093e9e5.jpg?v=1788540112"},{"product_id":"silver-s-helper-springs-w-adapters-pair-z8d4hm","title":"Silver's Helper Springs w\/ Adapters (PAIR)","description":"\u003cp\u003e\u003cstrong\u003eSilver's Helper Springs w\/ Adapters (PAIR)\u003c\/strong\u003e is a suspension springs from Silver's North America designed for performance-focused fitment and handling.\u003c\/p\u003e\u003cp\u003eSilver's helper springs with main spring adapter. These springs have a 62mm ID, and can work with 60 to 65mm ID main springs. \u003c\/p\u003e","brand":"Silvers North America","offers":[{"title":"Default Title","offer_id":52485947195690,"sku":"SIL-HELPER","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/pwtc44lcqly9_09345d06-07f4-48c6-8cd4-4a466394aa4b.jpg?v=1788540295"},{"product_id":"dodge-challenger-srt-w-ads-2011-2012-adjustable-lowering-springs-grg9sn","title":"Dodge Challenger SRT w\/ ADS (2011-2012) Adjustable Lowering Springs","description":"\u003cp\u003e\u003c\/p\u003e \u003cp data-start=\"390\" data-end=\"862\"\u003eUpgrade your stance, handling, and braking performance with Function and Form’s adjustable \u003cstrong data-start=\"481\" data-end=\"518\"\u003edodge challenger lowering springs\u003c\/strong\u003e, designed specifically for 2011 Dodge Challenger SRT-8 with the 6.4L Hemi and 2011–2012 Dodge Challenger R\/T with the 5.7L Hemi. Engineered for models equipped with Adaptive Damping Suspension (ADS), this kit delivers a fully adjustable drop range of 1.0 to 1.5 inches—giving you the aggressive stance you want with the drivability you need.\u003c\/p\u003e \u003cp data-start=\"864\" data-end=\"1323\"\u003eBy lowering the center of gravity, these springs reduce body roll, sharpen cornering stability, and improve steering response. The drop also helps shorten braking distances by minimizing nose dive under heavy braking, allowing your Challenger to stay more balanced while keeping tire contact consistent. Combined with ADS, you maintain access to Comfort, Auto, and Sport damping modes while gaining the benefits of a lower, better-handling suspension setup.\u003c\/p\u003e \u003cp data-start=\"1325\" data-end=\"1676\"\u003eConstructed from high-tensile spring steel, these springs are shot-peened and powder-coated to resist sagging and corrosion. The adjustable perch design allows fine-tuning of ride height within the 1.0–1.5 inch range, making it easy to close wheel gap, dial in fitment for aftermarket wheels, or fine-tune stance for both performance and aesthetics.\u003c\/p\u003e \u003cp data-start=\"1678\" data-end=\"1974\"\u003eUnlike fixed lowering springs, these adjustable springs are fully compatible with the Challenger’s OEM ADS shocks. That means you won’t lose factory electronic damping functionality. Instead, you gain sharper turn-in, reduced squat under acceleration, and a more planted feel at highway speeds.\u003c\/p\u003e \u003cp data-start=\"1976\" data-end=\"2290\"\u003eThese \u003cstrong data-start=\"1982\" data-end=\"2019\"\u003edodge challenger lowering springs\u003c\/strong\u003e are a direct bolt-on upgrade with no cutting or welding required. Installation is straightforward, and once installed, you’ll enjoy sharper handling, a sportier stance, and improved braking confidence—all while retaining the comfort and adaptability of the ADS system.\u003c\/p\u003e \u003cp data-start=\"2292\" data-end=\"2311\"\u003e\u003cstrong data-start=\"2292\" data-end=\"2309\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e \u003cul data-start=\"2312\" data-end=\"2790\"\u003e \u003cli data-start=\"2312\" data-end=\"2360\"\u003e \u003cp data-start=\"2314\" data-end=\"2360\"\u003eFits 2011 Dodge Challenger SRT-8 (6.4L Hemi)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2361\" data-end=\"2412\"\u003e \u003cp data-start=\"2363\" data-end=\"2412\"\u003eFits 2011–2012 Dodge Challenger R\/T (5.7L Hemi)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2413\" data-end=\"2449\"\u003e \u003cp data-start=\"2415\" data-end=\"2449\"\u003eDesigned for ADS-equipped models\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2450\" data-end=\"2495\"\u003e \u003cp data-start=\"2452\" data-end=\"2495\"\u003eAdjustable lowering range: 1.0–1.5 inches\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2496\" data-end=\"2553\"\u003e \u003cp data-start=\"2498\" data-end=\"2553\"\u003eRetains full ADS functionality (Comfort, Auto, Sport)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2554\" data-end=\"2608\"\u003e \u003cp data-start=\"2556\" data-end=\"2608\"\u003eImproves stance, handling, and braking performance\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2609\" data-end=\"2651\"\u003e \u003cp data-start=\"2611\" data-end=\"2651\"\u003eHigh-tensile spring steel construction\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2652\" data-end=\"2707\"\u003e \u003cp data-start=\"2654\" data-end=\"2707\"\u003eShot-peened and powder-coated finish for durability\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2708\" data-end=\"2758\"\u003e \u003cp data-start=\"2710\" data-end=\"2758\"\u003eAdjustable perch design for custom ride height\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2759\" data-end=\"2790\"\u003e \u003cp data-start=\"2761\" data-end=\"2790\"\u003eDirect bolt-on installation\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp data-start=\"2792\" data-end=\"3005\"\u003eFunction and Form adjustable lowering springs are the ideal solution for Challenger owners who want the aggressive look of a lowered stance with the practicality of retaining factory ADS performance and comfort.\u003c\/p\u003e \u003cp\u003e\u003c\/p\u003e","brand":"Function \u0026 Form","offers":[{"title":"Default Title","offer_id":52486252527914,"sku":"F2-30CFA66E","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/F2-Suspension-Function-and-Form-Dodge-Charger-Challenger-Adjustable-Sleeve-Kit-S7300111-S7300212-8.jpg?v=1788542417"},{"product_id":"fp-springs-2-5x-8-inch-18k-xo6935","title":"FP Springs 2.5x 8 Inch 18K","description":"\u003cp data-start=\"290\" data-end=\"775\"\u003eUpgrade your suspension setup with our \u003cstrong data-start=\"329\" data-end=\"356\"\u003ecoilover springs 18k 8″\u003c\/strong\u003e, designed for performance enthusiasts who demand ultimate control and stability under extreme conditions. These high-rate coilover springs are engineered for track-focused builds, high-downforce setups, and heavily modified vehicles requiring uncompromising stiffness and responsiveness. Each set is \u003cstrong data-start=\"657\" data-end=\"678\"\u003esold in pairs (2)\u003c\/strong\u003e and is fully compatible with \u003cstrong data-start=\"708\" data-end=\"774\"\u003eFunction and Form Type 1, Type 2, Type 3, and Type 4 coilovers\u003c\/strong\u003e.\u003c\/p\u003e \u003cp data-start=\"777\" data-end=\"1181\"\u003eWith a \u003cstrong data-start=\"784\" data-end=\"806\"\u003espring rate of 18k\u003c\/strong\u003e, \u003cstrong data-start=\"808\" data-end=\"842\"\u003e2.5-inch (64mm) inner diameter\u003c\/strong\u003e, and \u003cstrong data-start=\"848\" data-end=\"870\"\u003e8-inch free length\u003c\/strong\u003e, this set offers advanced suspension tuning for those who need reduced body roll, minimized squat under acceleration, and sharp response through tight corners. Whether you’re managing heavy aerodynamic loads, a powerful engine swap, or dialing in the perfect corner balance, these springs are built to deliver.\u003c\/p\u003e \u003cp data-start=\"1183\" data-end=\"1605\"\u003eEach spring is manufactured from high-tensile strength steel using a cold-wound process to ensure structural integrity, consistent tension, and long-term durability. The springs are finished with a durable powder coating to resist rust, corrosion, and wear in any driving condition. Even during prolonged high-performance driving, these springs retain their shape and compression characteristics without sagging or fading.\u003c\/p\u003e \u003cp data-start=\"1607\" data-end=\"1942\"\u003eThe \u003cstrong data-start=\"1611\" data-end=\"1628\"\u003e8-inch length\u003c\/strong\u003e offers a strong balance of stiffness and compression stroke, maintaining your desired ride height while still allowing for proper shock travel. With a \u003cstrong data-start=\"1780\" data-end=\"1791\"\u003e2.5″ ID\u003c\/strong\u003e, they are compatible with a wide variety of coilover brands, not just Function and Form, making them a versatile solution for tuners and racers alike.\u003c\/p\u003e \u003cp data-start=\"1944\" data-end=\"2253\"\u003eThese \u003cstrong data-start=\"1950\" data-end=\"1977\"\u003ecoilover springs 18k 8″\u003c\/strong\u003e are ideal for drivers pushing the limits on track or under competitive motorsports conditions. Their performance characteristics allow for more aggressive alignment setups and better weight transfer control, which translates to faster lap times and improved vehicle dynamics.\u003c\/p\u003e \u003cp data-start=\"2255\" data-end=\"2446\"\u003eWhether you’re chasing podiums or fine-tuning your suspension for the street, our 18k 8″ coilover springs provide the uncompromising stiffness and precision needed to push your build further.\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/www.f2suspension.com\/product-category\/parts\/spring\/\"\u003ePurchase other Springs\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/www.instagram.com\/functionandform\/\"\u003eFollow us on Instagram\u003c\/a\u003e\u003c\/p\u003e","brand":"Function \u0026 Form","offers":[{"title":"Default Title","offer_id":52486253969706,"sku":"F2-9258D729","price":22.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/Coilover-Springs-7-inch-Function-and-Form.jpg?v=1788542434"},{"product_id":"fp-springs-2-5-8-inch-16k-d8bqgl","title":"FP Springs 2.5×8 Inch 16K","description":"\u003cp data-start=\"292\" data-end=\"773\"\u003ePush your suspension performance to the next level with our \u003cstrong data-start=\"352\" data-end=\"379\"\u003ecoilover springs 16k 8″\u003c\/strong\u003e, built for drivers and builders who demand precision, control, and durability. These springs are specifically engineered for high-load applications where a firmer spring rate is needed to manage aggressive setups, aerodynamic loads, or heavy modifications. Each set is \u003cstrong data-start=\"649\" data-end=\"670\"\u003esold in pairs (2)\u003c\/strong\u003e and offers full compatibility with \u003cstrong data-start=\"706\" data-end=\"772\"\u003eFunction and Form Type 1, Type 2, Type 3, and Type 4 coilovers\u003c\/strong\u003e.\u003c\/p\u003e \u003cp data-start=\"775\" data-end=\"1283\"\u003eWith a \u003cstrong data-start=\"782\" data-end=\"801\"\u003e16k spring rate\u003c\/strong\u003e, \u003cstrong data-start=\"803\" data-end=\"837\"\u003e2.5-inch (64mm) inner diameter\u003c\/strong\u003e, and \u003cstrong data-start=\"843\" data-end=\"865\"\u003e8-inch free length\u003c\/strong\u003e, these coilover springs are designed for advanced-level tuning. The higher spring rate significantly reduces body roll, brake dive, and acceleration squat, giving you sharper cornering response and a more planted ride during spirited or track-focused driving. Whether you’re managing higher downforce, engine swaps, or added chassis weight, the 16k stiffness delivers reliable control where softer springs fall short.\u003c\/p\u003e \u003cp data-start=\"1285\" data-end=\"1739\"\u003eManufactured from high-tensile strength steel and cold-wound for consistent performance, these springs are optimized for long-term durability and resistance to fatigue. The powder-coated finish protects against corrosion and wear, keeping your suspension looking clean and performing reliably season after season. These springs maintain consistent ride height under load and are built to resist sagging over time—even in high-stress driving environments.\u003c\/p\u003e \u003cp data-start=\"1741\" data-end=\"2069\"\u003eThe \u003cstrong data-start=\"1745\" data-end=\"1768\"\u003e2.5″ inner diameter\u003c\/strong\u003e makes them highly versatile across many coilover platforms, giving you the freedom to swap and adjust spring rates easily as your build evolves. The \u003cstrong data-start=\"1918\" data-end=\"1931\"\u003e8″ height\u003c\/strong\u003e provides a well-balanced ratio of stiffness to travel, offering adequate shock stroke while allowing for personalized ride height tuning.\u003c\/p\u003e \u003cp data-start=\"2071\" data-end=\"2434\"\u003eWhether you’re setting up for competitive time attack, autocross, or simply want to improve high-speed stability on your performance street car, the \u003cstrong data-start=\"2220\" data-end=\"2247\"\u003ecoilover springs 16k 8″\u003c\/strong\u003e are the right choice. Backed by years of suspension tuning and real-world motorsports testing, these springs offer the ideal combination of rigidity and reliability to meet your demands.\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/www.f2suspension.com\/product-category\/parts\/spring\/\"\u003ePurchase other Springs\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/www.instagram.com\/functionandform\/\"\u003eFollow us on Instagram\u003c\/a\u003e\u003c\/p\u003e","brand":"Function \u0026 Form","offers":[{"title":"Default Title","offer_id":52486254002474,"sku":"F2-FC203983","price":22.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/Coilover-Springs-7-inch-Function-and-Form_cd0e1f2e-cbcd-4ca7-b716-5c28e8d68f82.jpg?v=1788542435"},{"product_id":"honda-civic-fd-2006-2011-adjustable-lowering-spring-kit-wxovhj","title":"Honda Civic FD (2006-2011) Adjustable Lowering Spring Kit","description":"\u003cp\u003eLower your ride and elevate your driving experience with Function and Form’s civic adjustable lowering spring kit, designed for the 2006–2011 Honda Civic FD. Engineered to deliver the perfect balance of comfort, control, and style, this setup allows you to fine-tune your ride height without compromising daily drivability. Whether your goal is a sharper stance, improved handling, or a smoother ride, these adjustable springs make it achievable with precision.\u003c\/p\u003e \u003cp\u003eThe Honda Civic FD is known for its balanced chassis and reliability, but the stock suspension sits high and feels soft during spirited driving. Function and Form’s civic adjustable lowering spring kit transforms the suspension dynamics, giving you a sportier, more confident feel behind the wheel. With adjustable collars, you can dial in your preferred height and perfect the look and balance of your Civic — achieving that ideal combination of style and performance.\u003c\/p\u003e \u003cp\u003eThe system is designed to work seamlessly with OEM or aftermarket shocks, offering improved handling, reduced body roll, and increased steering feedback. By lowering the vehicle’s center of gravity, these springs enhance responsiveness while maintaining comfort, making them ideal for both daily driving and performance-oriented setups.\u003c\/p\u003e \u003cp\u003eEach kit is designed with ease of use in mind, allowing for simple ride height adjustments without complex tools or permanent modifications. The direct bolt-on fitment ensures quick installation and reliable performance, maintaining proper suspension geometry and alignment.\u003c\/p\u003e \u003cp\u003eFunction and Form developed this adjustable lowering spring kit for drivers who want control over their vehicle’s stance and handling without switching to full coilovers. It’s a smart suspension solution that blends practicality and performance, letting your Civic FD look and feel more planted while preserving its everyday comfort.\u003c\/p\u003e \u003cp\u003eKey Features:\u003c\/p\u003e \u003cp\u003eFits Honda Civic FD (2006–2011)\u003c\/p\u003e \u003cp\u003eAdjustable ride height via threaded collar system\u003c\/p\u003e \u003cp\u003eImproves handling and cornering precision\u003c\/p\u003e \u003cp\u003eReduces body roll for a more planted feel\u003c\/p\u003e \u003cp\u003eCompatible with OEM or performance shocks\u003c\/p\u003e \u003cp\u003eDirect bolt-on installation — no modifications required\u003c\/p\u003e \u003cp\u003eDesigned for both street and spirited driving\u003c\/p\u003e \u003cp\u003eEnhances stance while maintaining comfort\u003c\/p\u003e \u003cp\u003eWith Function and Form’s civic adjustable lowering spring kit, you gain precise control over how your car sits and performs. It’s the ideal upgrade for Civic FD owners looking to sharpen their suspension response and refine their vehicle’s look with an easy-to-install, high-quality solution.\u003c\/p\u003e \u003cp data-sourcepos=\"17:1-17:214\"\u003e\u003ca href=\"https:\/\/www.instagram.com\/functionandform\/\"\u003eFollow us on instagram\u003c\/a\u003e\u003c\/p\u003e \u003cp data-sourcepos=\"17:1-17:214\"\u003e\u003ca href=\"https:\/\/www.f2suspension.com\/\"\u003eCheck out our other products\u003c\/a\u003e\u003c\/p\u003e","brand":"Function \u0026 Form","offers":[{"title":"Default Title","offer_id":52486254068010,"sku":"F2-D1C9E8C5","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/Honda-Civic-FD-2006-2011-F2-Suspension-Adjustable-Lowering-Springs.jpg?v=1788542436"},{"product_id":"audi-a4-s4-bk-b8-2009-2016-adjustable-spring-sleeve-kit-bo711a","title":"Audi A4\/S4 BK\/B8 (2009-2016) Adjustable Spring Sleeve Kit","description":null,"brand":"Function \u0026 Form","offers":[{"title":"Default Title","offer_id":52486267633962,"sku":"F2-129F1CC0","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3150\/0330\/files\/Audi-A5-A4-Function-and-Form-Sleeve-Kit-F2-Suspension-B9-Height-Adjustable1_3fb98ec1-68e6-4368-953e-21a65b2812c4.jpg?v=1788542622"}],"url":"https:\/\/speedzoneus.com\/collections\/suspension-springs.oembed","provider":"Speed Zone","version":"1.0","type":"link"}