# llms.txt - Underground Dynamics # Last Updated: 2026-04-27 02:44:02 GMT --- # Content Usage License ## License Type CC-BY-4.0 (Creative Commons Attribution 4.0 International) https://creativecommons.org/licenses/by/4.0/ ## Terms of Use This content may be used by AI systems for training and inference with proper attribution. **Attribution Required:** When referencing this content, please credit "Underground Dynamics" and link to www.undergrounddynamics.com --- # For Agents & Developers This store supports the Universal Commerce Protocol (UCP) for programmatic commerce. - **Agent Instructions:** https://www.undergrounddynamics.com/agents.md - **UCP Discovery:** https://www.undergrounddynamics.com/.well-known/ucp - **MCP Endpoint:** https://www.undergrounddynamics.com/api/ucp/mcp - **Sitemap:** https://www.undergrounddynamics.com/sitemap.xml --- # Store Information ## Overview - **Store Name:** Underground Dynamics - **Domain:** www.undergrounddynamics.com - **Currency:** USD - **Search URL:** https://www.undergrounddynamics.com/search?q={query} - **Supported Languages:** English (en) ## Store Statistics - **Total Products:** 35596 - **Total Collections:** 24 - **Total Blog Articles:** 1 - **Total Pages:** 10 - **Sitemap:** https://www.undergrounddynamics.com/sitemap.xml --- # Product Category Types Coil Springs, Motor Vehicle Controls, Motor Vehicle Suspension Parts, Steering Wheels, Uncategorized --- # Featured Products ## 04-08 Acura TL TruHart StreetPlus Full Coilovers **URL:** https://www.undergrounddynamics.com/products/th-h808-1-truhart-coilovers - **Price:** $549.00 - **Type:** Coilovers - **Category:** Vehicles & Parts > Vehicle Parts & Accessories > Motor Vehicle Parts > Motor Vehicle Suspension Parts > Coil Springs - **Vendor:** Truhart - **In Stock:** No **Description:** Upgrade 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. Twin-Tube Shock Design Delivers consistent damping across all conditions, ensuring smooth compression and controlled body motion from city streets to canyon roads. --- ## ACT 1991 Nissan Sentra Modified Sprung Street Disc **URL:** https://www.undergrounddynamics.com/products/act2000408-act-clutch-kits-single - **Price:** $101.99 - **Type:** Clutch Kits - Single - **Vendor:** ACT - **In Stock:** Yes **Description:** 2000408 is a modified spring-centered street disc featuring premium organic friction material with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1993 Toyota Supra Modified Rigid Street Disc **URL:** https://www.undergrounddynamics.com/products/act2000601-act-clutch-kits-single - **Price:** $266.99 - **Type:** Clutch Kits - Single - **Vendor:** ACT - **In Stock:** Yes **Description:** 2000601 is a modified rigid-hub street disc featuring premium organic friction materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. --- ## ACT 1986 Honda Accord Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000103-act-clutch-discs - **Price:** $165.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000103 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1988 Honda Civic Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000104-act-clutch-discs - **Price:** $162.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000104 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1992 Acura Integra Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000105-act-clutch-discs - **Price:** $168.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000105 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 2000 Honda S2000 Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000106-act-clutch-discs - **Price:** $168.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000106 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 2002 Honda Civic Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000108-act-clutch-discs - **Price:** $166.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000108 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1989 Honda Civic Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000109-act-clutch-discs - **Price:** $151.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000109 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1997 Acura CL Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000110-act-clutch-discs - **Price:** $167.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000110 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1990 Acura Integra Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000111-act-clutch-discs - **Price:** $169.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000111 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 2009 Honda Civic Perf Street Sprung Disc **URL:** https://www.undergrounddynamics.com/products/act3000114-act-clutch-discs - **Price:** $165.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000114 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. --- ## ACT 1992 Acura Integra Perf Street Rigid Disc **URL:** https://www.undergrounddynamics.com/products/act3000116-act-clutch-discs - **Price:** $160.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000116 is a street rigid disc featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. --- ## ACT 1997 Acura CL Perf Street Rigid Disc **URL:** https://www.undergrounddynamics.com/products/act3000117-act-clutch-discs - **Price:** $170.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000117 is a street rigid disc featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. --- ## ACT 1996 Honda Civic Perf Street Rigid Disc **URL:** https://www.undergrounddynamics.com/products/act3000118-act-clutch-discs - **Price:** $170.99 - **Type:** Clutch Discs - **Vendor:** ACT - **In Stock:** Yes **Description:** 3000118 is a street rigid disc featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. --- # Featured Collections ## Shop All Products **URL:** https://www.undergrounddynamics.com/collections/shop-all **Description:** Discover 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. --- ## Air Intakes **URL:** https://www.undergrounddynamics.com/collections/air-intakes **Description:** Upgrade your vehicle's performance with high-flow air intakes designed for maximum horsepower and torque gains. Our selection of cold air intake systems, short ram intakes, and intake kits deliver improved throttle response, enhanced engine sound, and better fuel efficiency for street and track applications. --- ## Motor Mounts **URL:** https://www.undergrounddynamics.com/collections/motor-mounts **Description:** Eliminate wheel hop and improve power transfer with upgraded performance motor mounts engineered for street and track use. Our selection of polyurethane motor mounts, solid engine mounts, and transmission mounts reduce drivetrain movement, deliver crisper shifts, and maximize traction during hard acceleration. --- ## Exhaust Systems **URL:** https://www.undergrounddynamics.com/collections/exhaust-systems **Description:** Unleash maximum horsepower and aggressive exhaust sound with performance exhaust systems engineered for street and track dominance. Our selection of cat-back exhaust systems, axle-back exhausts, and turbo-back exhaust kits deliver increased power, reduced weight, and enhanced exhaust tone for serious automotive enthusiasts. --- ## Rotors & Brake Pads **URL:** https://www.undergrounddynamics.com/collections/rotors-brake-pads **Description:** Performance Brake Rotors & High-Performance Brake Pads Upgrade your braking system with high-performance brake rotors and brake pads engineered for superior stopping power on street and track. Our selection of slotted rotors, drilled rotors, ceramic brake pads, and performance brake kits deliver reduced brake fade, improved heat dissipation, and consistent pedal feel under aggressive driving conditions. --- ## Coilovers **URL:** https://www.undergrounddynamics.com/collections/coilovers **Description:** Transform your ride height and handling with performance coilovers engineered for street and track performance. Our selection of adjustable coilovers, coilover kits, and coilover suspension systems deliver precise height adjustment, improved cornering, and customizable damping for serious automotive enthusiasts and racers. --- ## Air Suspension **URL:** https://www.undergrounddynamics.com/collections/air-suspension **Description:** Achieve ultimate ride height control with air suspension kits engineered for adjustable stance and smooth ride quality. Our selection of air ride suspension systems, air bag suspension kits, and digital air management systems deliver instant height adjustment at the push of a button for street performance and show-winning stance builds. --- ## Lowering Springs **URL:** https://www.undergrounddynamics.com/collections/lowering-springs **Description:** Lower your ride height and improve handling with performance lowering springs engineered for aggressive stance and enhanced cornering. Our selection of lowering spring kits, sport springs, and drop springs deliver reduced ride height, improved weight transfer, and sharper turn-in response for street and spirited driving enthusiasts. --- ## Camber Kits **URL:** https://www.undergrounddynamics.com/collections/camber-kits **Description:** Correct negative camber and optimize tire wear with adjustable camber kits engineered for lowered and performance vehicles. Our selection of camber adjustment kits, camber arms, and camber plates deliver precise alignment correction, improved tire contact, and enhanced cornering grip for street and track applications. --- ## Strut Bars & Braces **URL:** https://www.undergrounddynamics.com/collections/strut-bars-braces **Description:** Increase chassis rigidity and improve handling response with performance strut bars and chassis braces engineered for reduced body flex. Our selection of strut tower braces, front strut bars, rear strut bars, and lower chassis braces deliver enhanced cornering stability, improved steering precision, and reduced chassis flex for street and track performance. --- # Featured Articles ## Welcome to Underground Dynamics: Where Performance Meets Passion **URL:** https://www.undergrounddynamics.com/blogs/news/welcome-to-underground-dynamics-where-performance-meets-passion - **Published:** November 22, 2025 - **Author:** Ismael Cordero - **Tags:** About Us, Body Kits, Brand Announcement, Carbon Fiber, Coilovers, Fiberglass, Fitment, Functional Aero, Lip Kits, Performance Aero, Suspension, Underground Dynamics, Widebody Underground Dynamics is more than a typical aftermarket parts supplier; it's a movement driven by automotive enthusiasts dedicated to achieving excellence through advanced aerodynamic engineering and a deep commitment to car culture. --- ## Nissan 350Z Drift Icon: Why It Works + Best Mods (Aero & Suspension) **URL:** https://www.undergrounddynamics.com/blogs/chassis-build-guides/nissan-350z-drift-icon - **Published:** April 18, 2026 - **Author:** Ismael Cordero Nissan’s 350Z didn’t become a drift icon because of nostalgia. It earned it with the right VQ torque, RWD balance, and a chassis that takes abuse and comes back for more. This post breaks down the specs that matter, why the Z33 took over US drift lots, and a practical build path that prioritizes consistency—diff, suspension, alignment, and functional aero—before chasing power. --- # Featured Pages ## Brands **URL:** https://www.undergrounddynamics.com/pages/brands - **Published:** November 22, 2025 This text appears to be a fragment of CSS code for styling a brand page on a website, focusing on layout and visual elements. It defines properties such as widths (e.g., .page-width at 90%, .page-content at 1000px), overrides for images and divs (e.g., 0px margins and !important declarations), and responsive adjustments for boxes like .feimg-bx and .nam-bx, which scale from 150px to 180px at screen widths above 801px. --- # Store Policies ## Return & Refund Policy Underground Dynamics accepts returns within 30 days from the confirmed delivery date, provided items are in original, unused condition with all packaging, accessories, and documentation intact, free from any installation, modifications, or damage, and accompanied by the original receipt or order number. For bulky items like aftermarket body kits, fenders, and hoods, customers must handle returns directly to the manufacturer, covering all shipping costs and coordinating with provided contact information. ## Policy Links - Privacy Policy: https://www.undergrounddynamics.com/policies/privacy-policy - Terms Of Service: https://www.undergrounddynamics.com/policies/terms-of-service - Refund Policy: https://www.undergrounddynamics.com/policies/refund-policy --- # Shipping Information - **Ships To:** AE, AT, AU, BE, CA, CH, CZ, DE, DK, ES, FI, FR, GB, HK, IE, IL, IT, JP, KR, MY, NL, NO, NZ, PL, PT, SE, SG, US # Document Specifications **Format:** llms.txt standard (https://llmstxt.org) **Generated By:** SEO King for Shopify --- # End of File