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Thunder Lane

TL-ONE Thunder Lane Single Adjustable Coilover Kit for BMW E46 M3 (Inverted Front)

TL-ONE Thunder Lane Single Adjustable Coilover Kit for BMW E46 M3 (Inverted Front)

$2,300.00 USD
$2,300.00 USD
Sale Sold out

Built to order, to your spec. The TL-ONE is Thunder Lane US’s track-focused single adjustable coilover system for the BMW E46 M3. Every set is hand-assembled and bespoke-valved to match your tire, aero, grip level, and goals — whether that’s HPDE, autocross, time attack, or wheel-to-wheel.

Included with every order: CVP + PVP dyno graphs, build-to-order spring rate selection, and damping tuned for repeatable performance.

What this kit delivers

  • Confidence and consistency on entry, mid-corner, and power-down
  • Real low-speed control for tire management and predictable balance
  • Usable travel at your target ride height (not riding bump stops)

TL-ONE hardware highlights

  • 46mm monotube dampers with advanced piston technology and check valves
  • 20-click rebound adjustment for fast, meaningful track-side tuning
  • Independent ride height and preload adjustment
  • Electroplated bodies for long-term corrosion resistance
  • Spherical bearing top mounts for precise response and alignment stability Inverted front struts for added rigidity and track durability.
  • 2.5" linear springs with customizable spring rates (Swift optional)
  • Rebuildable & serviceable — individual replacement parts available

Spec options (we confirm with you)

  • Fitment: BMW M3 E46
  • Spring rates: track-ready defaults or your requested rates
  • Valving profile: linear or digressive (based on your use case)
  • Top mounts: spherical mounts / camber plates when applicable

FAQ

Is this kit rebuildable and serviceable?

Yes — all TL dampers are rebuildable and serviceable, with individual replacement parts available.

Do you include dyno graphs?

Yes. Every order includes CVP + PVP dyno graphs so you can document performance and track changes over time.

Can you help choose spring rates and setup?

Absolutely. We’ll confirm spring rates, ride height targets, and intended use during the build process.

Are these suitable for street use?

These systems are built with track performance as the priority. Many customers do drive them on the street, but expect a firm, motorsport-oriented ride quality.

Lead time and warranty?

Build time: built to order. Warranty: 3-Year Warranty (non-competition use).

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