{"title":"Porsche","description":"\u003cp\u003eThunder Lane builds hand-assembled, bespoke-valved suspension for Porsche — currently the 996-generation 911 (1999–2004, including Carrera 4) with the TL-ONE single-adjustable coilover system, and the 991\/992 911 (2WD and 4WD, including Carrera S) with the TL-HAS height-adjustable spring kit that lowers the car while keeping PASM and the factory dampers fully active. The 911's rear-biased weight distribution rewards damping that controls platform motion precisely without going harsh, and every kit here is valved around exactly that balance.\u003c\/p\u003e\n\u003cp\u003eEvery coilover is built to order in Poland with 46mm electroplated, fully rebuildable monotube dampers and ships with CVP and PVP dyno graphs documenting how your set was valved. Spring rates are finalized with you before production begins, and every kit can be valved for street use, track duty, or both. Lead time is 4–6 weeks. Not sure between springs and coilovers? Read \u003ca href=\"https:\/\/thunderlane.us\/blogs\/shock-technology-engineering-explained\/coilovers-vs-height-adjustable-springs-which-should-you-buy\"\u003eCoilovers vs Height-Adjustable Springs\u003c\/a\u003e or the \u003ca href=\"https:\/\/thunderlane.us\/blogs\/news\/best-coilovers-for-the-porsche-911-996\"\u003ePorsche 911 (996) buying guide\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"porsche-911-996-tl-one-coilover-system-1999-2004","title":"Porsche 911 (996) TL-ONE Coilover System (1999–2004)","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=911+996\u0026amp;product=Porsche+911+%28996%29+TL-ONE\"\u003eSpec your build with us →\u003c\/a\u003e\u003c\/p\u003e\n\u003csection class=\"tlone-product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePorsche 911 (996) TL-ONE Coilover System\u003c\/strong\u003e is Thunder Lane's track-focused single-adjustable coilover for the 996-generation 911 — hand-assembled in Poland and bespoke-valved to your car, tires, and goals. Every set ships with 20-click rebound adjustment, rebuildable monotube dampers, and camber-capable pillowball upper mounts.\u003c\/p\u003e\n\u003ch2\u003eBuilt for Racing, Time Attack, Autocross, and HPDE\u003c\/h2\u003e\n\u003cp\u003eThe 996's rear-biased weight distribution rewards a coilover that controls platform motion precisely without going harsh. TL-ONE is valved around that balance, and 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\u003eRebuildable monotube dampers, modular design\u003c\/li\u003e\n\u003cli\u003e20-click rebound adjustment (1-way)\u003c\/li\u003e\n\u003cli\u003eCamber \/ pillowball upper mounts\u003c\/li\u003e\n\u003cli\u003eSpring rates finalized in consultation with you before production begins\u003c\/li\u003e\n\u003cli\u003eLinear \/ digressive valving; CVP + PVP dyno graphs included with every kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eConstruction \u0026amp; Hardware\u003c\/h2\u003e\n\u003cp\u003eCheck valves manage the split between compression and rebound for strong low-speed platform control. 46mm monotube bodies are electroplated for corrosion resistance, and every kit is fully rebuildable, serviceable, and re-valvable as tires, alignment, or use case change.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003ePorsche 911 (996), including Carrera 4, 1999–2004.\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\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.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow are spring rates chosen?\u003c\/summary\u003e\u003cp\u003eWe finalize spring rates with you before production begins, matched to your car, tires, and goals.\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\":\"Porsche 911 (996) TL-ONE Coilover System\",\"description\":\"Track-focused TL-ONE coilovers for the Porsche 911 (996), hand-assembled in Poland with 20-click rebound, rebuildable monotube dampers, and CVP\/PVP dyno graphs.\",\"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\":\"Is this streetable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — every kit can be valved specifically for street use, and track-oriented valving often rides comfortably 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-porsche-911-996\"\u003ePorsche 911 (996) 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=911+996\u0026amp;product=Porsche+911+%28996%29+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":54981333745963,"sku":"TL-ONE-PORSCHE-996-1W-FAU","price":2975.0,"currency_code":"USD","in_stock":true},{"title":"Swift","offer_id":54981333778731,"sku":"TL-ONE-PORSCHE-996-1W-SWI","price":3275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/7960\/6315\/files\/PORSCHE_911_996_C4-819x1024.jpg?v=1786464930"},{"product_id":"porsche-911-991-992-tl-has-height-adjustable-spring-kit","title":"Porsche 911 (991\/992) TL-HAS Height Adjustable Spring Kit","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=911+991%2F992\u0026amp;product=Porsche+911+%28991%2F992%29+TL-HAS\"\u003eSpec your build with us →\u003c\/a\u003e\u003c\/p\u003e\n\u003csection class=\"tlhas-product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePorsche 911 (991\/992) TL-HAS Height Adjustable Spring Kit\u003c\/strong\u003e is Thunder Lane's height-adjustable spring system for the 991 and 992 generation 911 — hand-assembled in Poland and built to order, letting you dial in ride height on your factory dampers without moving to a full coilover.\u003c\/p\u003e\n\u003ch2\u003eHeight Adjustable, Factory-Damper Friendly\u003c\/h2\u003e\n\u003cp\u003eTL-HAS lowers the car and lets you set front and rear ride height independently, while keeping the factory suspension — including electronic damping control — fully active. It's the clean way to get a corner-balanced stance and improved handling on a car you want to keep largely OEM.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFront lowering range 15–35mm; rear lowering range 20–40mm\u003c\/li\u003e\n\u003cli\u003eWorks with factory suspension, including electronic damping control (PASM)\u003c\/li\u003e\n\u003cli\u003eTailored spring travel for improved handling and stance\u003c\/li\u003e\n\u003cli\u003eIndependent front and rear ride-height adjustment\u003c\/li\u003e\n\u003cli\u003eSpring rates finalized in consultation with you before production begins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003ePorsche 911 (991 and 992), 2WD and 4WD, including Carrera S 2WD.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"tlhas-faq\" id=\"tlhas-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\u003eDoes it keep my PASM and factory suspension features?\u003c\/summary\u003e\u003cp\u003eYes — TL-HAS works with the factory suspension, and electronic damping control (PASM) remains fully active.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I set the ride height myself?\u003c\/summary\u003e\u003cp\u003eYes — front and rear ride height adjust independently so you can dial in your exact stance and corner balance.\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\":\"Porsche 911 (991\/992) TL-HAS Height Adjustable Spring Kit\",\"description\":\"Height-adjustable lowering springs for the Porsche 911 991 and 992 (2WD\/4WD) — independent front\/rear ride height, keeps factory PASM active, hand-assembled and built to order.\",\"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\":\"Does it keep my PASM and factory suspension features?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — TL-HAS works with the factory suspension, and electronic damping control (PASM) remains fully active.\"}}]}\u003c\/script\u003e\u003cp class=\"tl-guide-link\"\u003eWant the full breakdown for your chassis? Read the \u003ca href=\"https:\/\/thunderlane.us\/blogs\/news\/height-adjustable-springs-for-the-porsche-911-991-992-lower-it-keep-pasm\"\u003ePorsche 911 height-adjustable springs 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=911+991%2F992\u0026amp;product=Porsche+911+%28991%2F992%29+TL-HAS\" 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":"Default Title","offer_id":54981739905323,"sku":"TL-HAS-PORSCHE-911","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/7960\/6315\/files\/IMG_3540-856x1024.jpg?v=1786473403"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/7960\/6315\/collections\/porsche.png?v=1786469899","url":"https:\/\/thunderlane.us\/collections\/porsche.oembed","provider":"thunderlane.us","version":"1.0","type":"link"}