{"product_id":"bmw-f8x-m3-m4-tl-one-coilover-system","title":"BMW F8X M3\/M4 TL-ONE Coilover System","description":"\u003cp class=\"tl-consult-top\" style=\"margin:0 0 16px;padding:10px 14px;background:#FAEEDA;border-left:3px solid #fdb819;font-size:15px;line-height:1.6;\"\u003e\u003cstrong\u003eBuilt to order.\u003c\/strong\u003e Not sure which spec you need? \u003ca href=\"\/pages\/build-consultation?chassis=F8X+M3%2FM4\u0026amp;product=BMW+F8X+M3%2FM4+TL-ONE\"\u003eSpec your build with us →\u003c\/a\u003e\u003c\/p\u003e\n\u003csection class=\"tlone-product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBMW F8X M3\/M4 TL-ONE Coilover System\u003c\/strong\u003e is Thunder Lane's track-focused single-adjustable coilover for the BMW M3 (F80) and M4 (F82\/F83) — hand-assembled in Poland and bespoke-valved to your tire, aero, and grip level, whether you're running HPDE, autocross, time attack, or wheel-to-wheel.\u003c\/p\u003e\n\u003ch2\u003eBuilt for Racing, Time Attack, Autocross, and HPDE\u003c\/h2\u003e\n\u003cp\u003eThe F8X platform's power and weight reward a coilover with real low-speed control for consistent balance under braking and power-down. Every kit can also be valved specifically for street use — the compliance needed for competent track use often makes for a comfortable street ride, since controlling the platform better also controls body motion better on the street.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e46mm monotube damper with advanced piston technology and check valves\u003c\/li\u003e\n\u003cli\u003e20-click rebound adjustment (1-way)\u003c\/li\u003e\n\u003cli\u003eIndependent Ride Height and Travel Adjustment\u003c\/li\u003e\n\u003cli\u003e2.5\" linear springs, customizable rates (Swift optional)\u003c\/li\u003e\n\u003cli\u003eSpherical bearing top mounts\u003c\/li\u003e\n\u003cli\u003eCVP + PVP dyno graphs included with every kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eConstruction \u0026amp; Hardware\u003c\/h2\u003e\n\u003cp\u003eElectroplated bodies resist long-term corrosion, and spherical top mounts hold alignment precisely through hard cornering. Every damper is rebuildable and serviceable as your setup evolves.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eBMW M3 (F80) \/ M4 (F82\/F83).\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"tlone-faq\" id=\"tlone-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the lead time?\u003c\/summary\u003e\u003cp\u003e4–6 weeks, built to order.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the warranty?\u003c\/summary\u003e\u003cp\u003e6 months — void for track damage, covers unreasonable wear and defects only.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan you help choose spring rates and setup?\u003c\/summary\u003e\u003cp\u003eYes — we confirm rates, ride height targets, and use case with you before building.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this streetable?\u003c\/summary\u003e\u003cp\u003eYes — every kit can be valved specifically for street use if that's your preference. Even with track-oriented valving, the compliance needed for competent track use often makes for a comfortable street ride, since controlling the platform better also controls body motion better on the street.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003cp\u003eRacing Thunder Lane suspension in Time Attack, Hill Climb, or wheel-to-wheel? Ask about product credit through our contingency program.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\"name\":\"BMW F8X M3\/M4 TL-ONE Coilover System\",\"description\":\"Bespoke-valved TL-ONE coilovers for the BMW M3\/M4 F8X. Hand-assembled per order with CVP\/PVP dyno graphs and travel-adjustable ride height.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Thunder Lane\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What's the lead time?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"4–6 weeks, built to order.\"}},{\"@type\":\"Question\",\"name\":\"What's the warranty?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"6 months — void for track damage, covers unreasonable wear and defects only.\"}},{\"@type\":\"Question\",\"name\":\"Can you help choose spring rates and setup?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — we confirm rates, ride height targets, and use case with you before building.\"}},{\"@type\":\"Question\",\"name\":\"Is this streetable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — every kit can be valved specifically for street use if that's your preference. Even with track-oriented valving, the compliance needed for competent track use often makes for a comfortable street ride, since controlling the platform better also controls body motion better on the street.\"}}]}\u003c\/script\u003e\u003cp class=\"tl-guide-link\"\u003eWant the full breakdown for your chassis? Read the \u003ca href=\"https:\/\/thunderlane.us\/blogs\/news\/best-coilovers-for-the-bmw-f8x-m3-m4-f80-f82-f83\"\u003eBMW F8X M3\/M4 coilover buying guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"tl-consult-cta\" style=\"margin:32px 0 8px;padding:24px;border:1px solid #e3e3e3;border-radius:8px;text-align:center;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:18px;font-weight:600;\"\u003eNot sure which spec you need?\u003c\/p\u003e\n\u003cp style=\"margin:0 0 16px;font-size:15px;color:#555;line-height:1.6;\"\u003eTell us the chassis, how the car is built, and how you use it. We spec the kit before anything is assembled.\u003c\/p\u003e\n\u003ca class=\"tl-consult-btn\" href=\"\/pages\/build-consultation?chassis=F8X+M3%2FM4\u0026amp;product=BMW+F8X+M3%2FM4+TL-ONE\" style=\"display:inline-block;padding:14px 30px;background:#fdb819;color:#111;font-size:16px;font-weight:600;text-decoration:none;border-radius:6px;\"\u003eSpec your build with us\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Thunder Lane","offers":[{"title":"Faulkner (Standard)","offer_id":51687002603819,"sku":"TL-ONE-BMW-F8X-1W-FAU","price":2714.25,"currency_code":"USD","in_stock":true},{"title":"Swift","offer_id":51667535462699,"sku":"TL-ONE-BMW-F8X-1W-SWI","price":3014.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/7960\/6315\/files\/IMG_9114-768x1024.jpg?v=1766155071","url":"https:\/\/thunderlane.us\/products\/bmw-f8x-m3-m4-tl-one-coilover-system","provider":"thunderlane.us","version":"1.0","type":"link"}