{"product_id":"honda-civic-si-fc-17-21-traction-plus-ultra-coilovers","title":"Honda Civic SI FC (17-21) Traction Plus Ultra Coilovers","description":"\u003cp\u003eRefine chassis stability and cornering consistency in your \u003cstrong\u003eHonda Civic SI FC\u003c\/strong\u003e with Riaction Traction Plus Ultra coilovers. Designed for modern front-wheel-drive platforms, the TPU system reduces body roll, improves braking composure, and delivers more predictable front-end grip during spirited driving.\u003c\/p\u003e\n\u003cp\u003eTraction Plus Ultra is engineered around our \u003cstrong\u003enew digressive piston design\u003c\/strong\u003e, providing firm low-speed damping for stronger roll resistance and clearer steering feedback while maintaining composure as suspension velocity increases. On the FC chassis, this results in flatter cornering, improved mid-corner stability, and smoother weight transfer through rapid transitions.\u003c\/p\u003e\n\u003cp\u003eEach kit features a \u003cstrong\u003enickel-coated shock body\u003c\/strong\u003e for corrosion resistance and long-term durability. The \u003cstrong\u003ehex screw preload collar locking system\u003c\/strong\u003e secures spring preload under repeated high-load driving. Signature orange-coated non-MacPherson components add protection and a distinctive performance finish, while pillowball upper mounts are included where applicable to maximize steering precision and suspension articulation.\u003c\/p\u003e\n\u003cp\u003eEvery Traction Plus Ultra system is backed by our 2-year factory warranty.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e🔧 \u003cstrong\u003eTraction Plus Ultra Coilover Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFull-Length Ride Height Adjustment\u003cbr\u003e32-Level Damping Adjustment\u003cbr\u003eNew Digressive Piston Valving\u003cbr\u003eMono-Tube Damper Design\u003cbr\u003eNickel-Coated Shock Body for Corrosion Protection\u003cbr\u003eHex Screw Preload Collar Locking System\u003cbr\u003eSignature Orange Coating on Non-MacPherson Components\u003cbr\u003ePillowball Upper Mounts (When Applicable)\u003cbr\u003e44mm High-Flow CNC 6061 Aluminum Piston\u003cbr\u003eCNC 6061 Aluminum Floating Piston\u003cbr\u003ePolyurethane Oil Seals\u003cbr\u003eSAE9254 Cold-Wound Performance Springs\u003cbr\u003eMulti-Thickness Valving Shims\u003cbr\u003eLow-Gas Pressure Internal Design\u003cbr\u003e7.5w Compounded Suspension Fluid\u003cbr\u003eFully Rebuildable Coilover Assembly\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e⚙️ \u003cstrong\u003eFactory Spring Rates:\u003c\/strong\u003e\u003cbr\u003eFront: XXX\u003cbr\u003eRear: XXX\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e📧 \u003cstrong\u003eInternational Orders:\u003c\/strong\u003e\u003cbr\u003eFor international shipping inquiries, please email us at \u003ca class=\"decorated-link cursor-pointer\" rel=\"noopener\"\u003einfo@riactionshocks.com\u003cspan class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-d1qk0x1f.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eDeliver controlled handling and improved chassis balance in your Honda Civic SI FC with Traction Plus Ultra coilovers—engineered performance shocks from Riaction Performance Shocks.\u003c\/p\u003e","brand":"Riaction Performance Shocks","offers":[{"title":"Default Title","offer_id":53599550832916,"sku":"0HA-046-TPU","price":1780.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/3833\/7812\/files\/2006-2011-honda-civic-8th-gen-fd-traction-plus-ultra-coilovers_d362e1a7-4dca-4700-b0ae-0f1c2f1646c9.webp?v=1776892294","url":"https:\/\/www.riactionperformanceshocks.com\/products\/honda-civic-si-fc-17-21-traction-plus-ultra-coilovers","provider":"Riaction Performance Shocks","version":"1.0","type":"link"}