{"title":"Shop All Products","description":"\u003cdiv style=\"text-align: left;\" data-sentry-source-file=\"p.tsx\" data-sentry-component=\"P\" class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\"\u003eDiscover the complete selection of aftermarket auto parts and performance parts for Honda, Subaru, Ford, Nissan, Mazda, Toyota, Chevrolet, and Infiniti. Underground Dynamics specializes in performance suspension, body kits, and interior styling upgrades engineered for street performance, track racing, and show-winning builds.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-sentry-source-file=\"p.tsx\" data-sentry-component=\"P\" class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\"\u003eShop our extensive catalog of coilovers, lowering springs, air suspension, body kits, widebody fenders, carbon fiber hoods, racing seats, steering wheels, exhaust systems, brake rotors, and air intakes. Whether you're building a Honda Civic, Subaru BRZ, Ford Mustang, Nissan 350Z, Mazda Miata, or Toyota Supra, we offer performance auto parts with direct-fit applications and bolt-on installation.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\" data-sentry-source-file=\"p.tsx\" data-sentry-component=\"P\" class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\"\u003e\u003cstrong\u003eProduct Categories:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca title=\"CoilOvers\" href=\"\/collections\/coilovers\" aria-label=\"CoilOvers\"\u003eSuspension Parts\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCoilovers, lowering springs, air suspension, camber kits, strut bars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca title=\"Body Kits\" href=\"\/collections\/body-kits\" aria-label=\"Body Kits\"\u003eBody Kits \u0026amp; Aero\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eComplete body kits, widebody fenders, carbon fiber hoods, spoilers, front lips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca title=\"Racing Seats\" href=\"\/collections\/seats-harnesses-and-accessories\" aria-label=\"Racing Seats\"\u003eInterior Upgrades\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRacing seats, racing harnesses, steering wheels, quick release hubs, seat covers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/collections\/air-intakes\" title=\"Air Intakes\" aria-label=\"Air Intakes\"\u003ePerformance Parts\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eExhaust systems, air intakes, brake rotors, brake pads, motor mounts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/collections\/hoods-spoilers-body-panels\" title=\"Spoilers\" aria-label=\"Spoilers\"\u003eExterior Styling\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMud flaps, body panels, fender flares, side skirts, rear diffusers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\" data-sentry-source-file=\"p.tsx\" data-sentry-component=\"P\" class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\"\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003eDirect-fit aftermarket parts for popular makes and models\u003c\/li\u003e\n\u003cli\u003ePerformance suspension for improved handling\u003c\/li\u003e\n\u003cli\u003eAggressive body kits and aero components\u003c\/li\u003e\n\u003cli\u003eRacing-inspired interior upgrades\u003c\/li\u003e\n\u003cli\u003eCarbon fiber and lightweight construction\u003c\/li\u003e\n\u003cli\u003eStreet and track-proven performance parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\" data-sentry-source-file=\"p.tsx\" data-sentry-component=\"P\" class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\"\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Compatible with Acura TL, Nissan 350Z, Mazda Miata, Infiniti G35, Scion FR-S, Subaru BRZ, Toyota Supra, Honda Accord, Honda Civic, Chevrolet Camaro, and Ford Mustang.\u003c\/div\u003e","products":[{"product_id":"th-h808-1-truhart-coilovers","title":"04-08 Acura TL TruHart StreetPlus Full Coilovers","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your 2004-2008 Acura TL with TruHart StreetPlus Full Coilovers. This street-focused setup blends precise handling, adjustable stance, and everyday comfort without the premium price tag.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTwin-Tube Shock Design\u003c\/strong\u003e: Delivers consistent damping across all conditions, ensuring smooth compression and controlled body motion from city streets to canyon roads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndependent Ride Height Adjustment\u003c\/strong\u003e: Fine-tune your TL’s stance with adjustable lower mounts without sacrificing shock travel or geometry.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOptimized Spring Rates\u003c\/strong\u003e: Front 14 kg\/mm (784 lbs\/in) and Rear 7.2 kg\/mm (403 lbs\/in) provide firm, responsive handling with acceptable daily ride quality.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e: Zinc-plated shock bodies resist corrosion; powder-coated lower mounts stand up to the elements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNon-Adjustable Damping\u003c\/strong\u003e for simple, reliable tuning and predictable behavior—great for daily driving with weekend performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDaily-Driver Friendly\u003c\/strong\u003e: Improves grip and turn-in without turning the TL into a rough-riding track machine.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy it makes sense for TL owners\u003c\/strong\u003e: Lower the center of gravity, reduce body roll, and customize your look—from a subtle drop to an aggressive stance—while maintaining daily usability and long-term reliability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e: 2004–2008 Acura TL (UA6\/UA7).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Truhart","offers":[{"title":"Default Title","offer_id":47742046666967,"sku":"TH-H808-1","price":549.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0791\/9815\/9063\/files\/04-08-acura-tl-truhart-streetplus-full-coilovers-370.webp?v=1777257805"},{"product_id":"mismmsk-xl-bk-mishimoto-shift-knobs","title":"Mishimoto Weighted Shift Knob XL Black","description":"Constructed from solid steel, weighing in at nearly two full pounds, and standing 4.3-inches tall, the Mishimoto XL Weighted Shift Knob is an indestructible and indispensable addition to your interior. When you’re rowing through the gears, the extra weight helps provide more positive gear engagement and smoother shifts. Whether you are racing, towing, or daily driving, the XL Weighted Shift Knob is comfortable in the hand and makes grabbing gears easier than ever. Available in Black, Blue, Red, or Silver, you can find something to match your style with ease. To provide a wide range of fitment, we include 3 thread adapter inserts to fit M8X1.25, M10X1.5, or M12X1.25 shifters. As with all our products, the XL Weighted Shift Knob includes our signature Mishimoto Lifetime Warranty.","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":48275940540631,"sku":"MISMMSK-XL-BK","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0791\/9815\/9063\/files\/mishimoto-weighted-shift-knob-xl-black-knobs-963.jpg?v=1777395640"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0791\/9815\/9063\/collections\/shop-all-products.webp?v=1776559015","url":"https:\/\/www.undergrounddynamics.com\/collections\/shop-all.oembed","provider":"Underground Dynamics","version":"1.0","type":"link"}