• Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
  • Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)
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SLR Speed

Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)

Mercedes S-Class W221 Coilover Conversion Kit with Adjustable Sway Bars and Power Steering 2006-2013 (S250 CDI, S300, S350, S400 HYBRID, S450, S550, S500, S600, S320 CDI, S420 CDI, S63, S65)

$3,545.85 USD
$3,545.85 USD
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MODEL
Spring Rate
Your Original Suspension
  • Ships direct from the brand or supplier
  • Tracking emailed when it ships
  • Free fitment check before you order

Listed for: Mercedes-Benz MercedesFitment notes & questions

This SLR Speed coilover kit is listed for the Mercedes-Benz S-Class W221. A coilover kit replaces the factory spring and shock with an adjustable assembly, giving you control over stance and, on adjustable kits, damping.

Key details

  • ☆ All cancellations subject to 3.9% processing fee, returns will be subject to 15% restocking fee.☆

Good to know

  • Mercedes Active Body Control system (ABC) often becomes a constant maintenance issue, frequently costing thousands with each repair.
  • This kit includes everything to safely and securely replace your entire ABC system with a coilover suspension (like the SL65 Black Series), not only getting rid of your headaches, but also giving you the confident handling & control your S-Class deserves.
  • This kit includes the following: Full Coilover Suspension (32-click simultaneous compression & rebound adjustment on top of each strut)
  • All Required Hardware for Complete Install
  • ☆ Please allow at least 2week lead time for each kit hand assembled here in Florida.☆

Tip: Set your final ride height, then get the car aligned.

View full details

Before you order: Mercedes-Benz Mercedes fitment and setup

If you want more control over stance and handling than lowering springs give you on a Mercedes-Benz Mercedes, a coilover kit like this SLR Speed set is the usual next step.

Fitment notes

  • Listed for: Mercedes-Benz Mercedes.
  • Factory adaptive dampers: if your car has electronic or adaptive suspension, check whether the listing covers it or needs a cancellation kit.
  • Specs, lead time and warranty come from SLR Speed and can change. The details above this guide are the latest we have.

Not sure it fits? Message us your car's details and we'll double-check fitment with the supplier before you buy.

Ask about fitment

Plan the whole job

  • An alignment. Any change in ride height changes camber and toe. Set your final height first, then align.
  • Camber and toe adjustment. Bigger drops often need adjustable arms or camber plates to align properly. See alignment and camber kits.
  • Wheel and tire clearance. Check clearance at full lock and full compression, especially with wider wheels. Our ride height and wheel fitment calculator shows how much drop and offset change you are planning.
  • The right spring rate. Compare the rates listed here with what our spring rate calculator suggests for your car's weight and use.

More for your car: Mercedes-Benz Coilovers & Suspension · All Coilovers

Questions about Mercedes-Benz Mercedes coilovers

Will this fit my Mercedes-Benz Mercedes?
It is listed for the Mercedes-Benz Mercedes. Check your year, model, drivetrain and chassis code against the product title. If anything is different, contact us and we will confirm fitment with the supplier before you order.
Do I need an alignment after installing coilovers?
Yes. Changing ride height changes camber and toe. Set your final height, let the suspension settle, then get the car aligned.
How low can I go?
It depends on the adjustment range the brand lists, your wheels and tires, and how you use the car. Most cars that are driven hard work best with a modest drop that leaves enough suspension travel.
Where do specs and warranty details come from?
From SLR Speed. We sell parts from several brands and suppliers, and each one sets its own specs, lead times and warranty terms. The product details above are the latest we have.
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