CUSTOM VALVING AVAILABLE
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Thunder Lane
Porsche 911 (991/992) TL-HAS Height Adjustable Spring Kit
$1,200.00
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- Description
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Built to order. Not sure which spec you need? Spec your build with us →
The Porsche 911 (991/992) TL-HAS Height Adjustable Spring Kit 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.
Height Adjustable, Factory-Damper Friendly
TL-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.
Technical Specs
- Front lowering range 15–35mm; rear lowering range 20–40mm
- Works with factory suspension, including electronic damping control (PASM)
- Tailored spring travel for improved handling and stance
- Independent front and rear ride-height adjustment
- Spring rates finalized in consultation with you before production begins
Fitment
Porsche 911 (991 and 992), 2WD and 4WD, including Carrera S 2WD.
Frequently Asked Questions
What's the lead time?
4–6 weeks, built to order.
What's the warranty?
6 months — void for track damage, covers unreasonable wear and defects only.
Does it keep my PASM and factory suspension features?
Yes — TL-HAS works with the factory suspension, and electronic damping control (PASM) remains fully active.
Can I set the ride height myself?
Yes — front and rear ride height adjust independently so you can dial in your exact stance and corner balance.
Racing Thunder Lane suspension in Time Attack, Hill Climb, or wheel-to-wheel? Ask about product credit through our contingency program.
Want the full breakdown for your chassis? Read the Porsche 911 height-adjustable springs guide.
Not sure which spec you need?
Tell us the chassis, how the car is built, and how you use it. We spec the kit before anything is assembled.
Spec your build with usWe build every suspension set to order and want you to know exactly what to expect from checkout to delivery.
Build Lead Time (Made-to-Order)
Because every set is machined and assembled for one specific car, most orders require a 4–6 week lead time to machine hardware and complete assembly.
Every set is built 100% in-house in Kraków, Poland—no outsourced assembly, no pre-built inventory.
Shipping Time to the United States
Once your order is complete and ready to dispatch, typical shipping time to the U.S. is 5–10 business days.
Transit time can vary slightly depending on carrier, customs processing, and your location.
Where We Ship
We currently ship to the United States, Canada, Mexico, and Central America, with free shipping to every destination we serve.
Order Processing & Tracking
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You’ll receive a confirmation email after placing your order.
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We’ll reach out to confirm your build spec—spring rates, valving, and ride height—before production begins.
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When your order ships, you’ll receive an email with tracking information.
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If your order includes multiple items, they may ship together or separately depending on production status.
Important Notes
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Lead times are estimates and may change based on current workload, parts availability, or production volume.
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Business days do not include weekends or holidays.
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International shipments may experience customs-related delays outside of our control.
Need Help?
If you have a deadline (event, track day, or travel schedule) or want an update on your order, contact us and we’ll do our best to help you plan accordingly.
