How to Install Coilovers (Step-by-Step Guide)
Installing coilovers is one of the most satisfying upgrades you can do on your car. You do the work, you set the height where you want it, and every time you drive it you know what went into it. It is also one of the upgrades where one skipped step can undo all of it. This guide covers the full process correctly, including the step most DIY installation guides skim over.
This guide covers the full process correctly, including the step that most DIY installation guides underemphasize.
Understanding Coilovers and Their Benefits
A coilover kit combines a coil spring and shock absorber into one integrated unit. It replaces your factory spring and shock completely. A quality coilover kit installed correctly gives you adjustable ride height, tunable damping, reduced unsprung weight, and a real performance suspension upgrade.
The key word is correctly. A well-installed coilover kit transforms how the car drives. A poorly installed kit, or one that skips post-installation alignment, can leave handling worse than stock and accelerate tire wear.
Essential Tools and Materials for Installation
Before you start, have everything ready. Starting a suspension job without the right tools is how you end up with the car on stands overnight.
Required Tools
Floor jack and rated jack stands, socket set (metric and standard), torque wrench, spring compressor, penetrating oil, and a breaker bar. An impact wrench speeds up the process. Access to an alignment shop immediately after installation.
Before You Start
Check the kit contents. Verify all hardware is included. Read the manufacturer's installation guide for your specific platform. Some kits have platform-specific notes that matter. Write down all torque specs before you start.
Pre-Installation Preparation
Safety first. Park on a flat, level surface. Apply the parking brake. Chock the wheels you are not working on. Never work under a car supported only by a floor jack.
Set your ride height before installation if possible. Use the manufacturer's recommendation as your starting point. Most kits come with a suggested starting height. Thread the spring perch to that position and lock the collar before the kit goes in. It is much easier to set it on the bench than under the car.
Read the torque specs for your specific platform. Every fastener has a spec. Upper mount nuts. Lower mount bolts. Locking collar. All of it. Write them down before you start.
Step-By-Step Installation Process
Step 1. Lift and support the car safely. Use proper jack points from your car's manual. Get the car on stands before doing anything else. Never trust a floor jack alone.
Step 2. Remove the wheel. Keep your hardware organized. A parts tray or labeled bags for each corner saves headaches.
Step 3. Disconnect the factory shock from upper and lower mounts. Take photos before disconnecting anything. This is your reference when installing the new kit.
Step 4. Remove the factory spring and shock. If your car uses a strut design, use a spring compressor to safely remove the spring before disconnecting the upper mount. Do not skip the spring compressor. A compressed spring stores enormous energy and will injure you if it releases unexpectedly.
Step 5. Transfer any components needed to the new coilover. Some platforms require moving a bump stop, dust boot, or top hat from the factory strut. Check the instructions.
Step 6. Set the initial ride height and damping on the new coilover before installation. Use the manufacturer's starting point. Set the damping adjuster to the recommended street setting, typically 8 to 12 clicks from full soft.
Step 7. Install the new coilover. Align upper and lower mounts correctly. Hand-tighten all hardware first. Confirm the coilover is seated correctly before torquing anything.
Step 8. Torque everything to spec. Use your torque wrench on every fastener. Locking collar, upper mount nuts, lower mount bolts, wheel bolts. All of it. Undertorqued hardware is how ride height changes on its own and how components fail.
Step 9. Reinstall the wheel. Lower the car off stands. Bounce each corner to settle the suspension.
Step 10. Repeat for all four corners. Then get the alignment done before driving.
Post-Installation Checks and Maintenance
The Step That Gets Skipped Most Often
Get a professional alignment immediately after installation. Not eventually. Immediately. Any time you change ride height, you change the camber and toe settings at every corner. Driving on out-of-alignment suspension wears your tires unevenly, can make handling worse than stock, and in extreme cases affects steering response. An alignment takes 30 to 60 minutes and costs less than one tire.
The step that matters most and gets skipped most often.
Get a professional alignment immediately after installation. Not eventually. Immediately. Any time you change ride height, you change camber and toe at every corner of the car. Driving on out-of-alignment suspension wears your tires unevenly, can cause handling that feels worse than stock, and in extreme cases affects steering response. An alignment takes 30 to 60 minutes and costs less than one tire.
Some drivers skip the alignment because they plan to adjust ride height again soon. That is wrong thinking. Even a quarter inch of change shifts your spring rate behavior and alignment settings measurably. Do not put miles on misaligned suspension.
Common Installation Mistakes to Avoid
Installing on worn components. If your wheel bearings, ball joints, or control arm bushings are worn, installing coilovers on top of them is wasted money. Fix worn components first.
Skipping the torque wrench. Tight by hand and tight to spec are not the same. A loose upper mount creates noise and allows movement that degrades handling. A loose locking collar lets ride height change over time.
Setting the car too low on the first try. Start at the manufacturer's recommended height or slightly above. You can always go lower. Going too low means removing the car from the ground again to adjust.
Dirty or corroded threads. Clean the threads before installation. Corrosion prevents accurate ride height adjustment and can seize the collar in place over winter.
Choosing Between DIY and Professional Installation
Installing with worn or damaged components. If your wheel bearings, ball joints, or control arm bushings are worn, installing coilovers on top of them is wasted money. Fix worn components first.
Skipping the torque wrench. Tight by hand and tight to spec are not the same. A loose upper mount creates noise and allows movement that degrades handling. A loose locking collar lets ride height change over time.
Setting the car too low on the first try. Start at the manufacturer's recommended height or slightly above. You can always go lower. Going too low on the first setup means removing the car from the ground again to adjust.
Frequently Asked Questions
What tools do I need to install coilovers?
Floor jack and stands, socket and wrench set, torque wrench, spring compressor, penetrating oil, and breaker bar. An impact wrench speeds up the process. You also need access to an alignment shop immediately after installation.
How do coilovers improve a car's performance?
Coilovers lower the center of gravity, reduce unsprung weight, and let you tune damping and ride height to your specific driving style and roads. A properly installed and aligned coilover kit improves cornering, reduces body roll, and gives you better feedback through the steering wheel.
What are the steps for installing coilovers?
Lift and support the car. Remove the wheel. Disconnect factory shocks. Remove factory springs. Set ride height on the new coilover. Install it. Torque all hardware to spec. Reinstall wheels. Get a professional alignment immediately after.
How do I adjust the ride height after installing coilovers?
Thread the spring perch up or down the shock body and lock the collar. Moving the perch down lowers the car. Moving it up raises it. Always torque the locking collar after any adjustment. Always get a professional alignment after any ride height change.
Can I install coilovers on my own?
Yes, with the right tools and a mechanical understanding of suspension systems. The job requires a spring compressor and a torque wrench as minimum requirements. If you are not confident with suspension work, professional installation is the safer choice. The cost of installation is far less than the cost of a mistake.
Do I need a professional alignment after installing coilovers?
Yes, every time. This is not optional. Any ride height change affects camber and toe. Driving on out-of-alignment suspension wears tires unevenly and can make the car handle worse than stock. An alignment immediately after installation is a non-negotiable part of the process. Choosing Between DIY and Professional Installation If you have done suspension work before and have the right tools, coilover installation is a satisfying afternoon job. If you have never worked on suspension, coilovers are not the best first project. The spring compressor step requires care, and the torque specs matter. A professional installation typically costs $150 to $300 depending on the shop. That includes installation and often a basic alignment check. For a first-time coilover install, or for a driver who is not mechanically confident, professional installation is money well spent. The coilovers perform correctly from day one. No guesswork. Whether you install them yourself or have them installed professionally, the alignment afterward is always the owner's responsibility to schedule. Make sure it is booked before the car goes back on the road.
Installation Notes by Brand
Each brand has quirks worth knowing before you start. KW Suspension uses a twin-tube or monotube design depending on model. Their top mount hardware is platform-specific. Always check their fitment guide before assuming the box hardware covers your application. BC Racing BR Series kits require an Allen key hold on the damper shaft during top nut torque. Skipping this step is the most common install error and the most common source of post-install noise. Fortune Auto 500 Series kits require a specific torque sequence on the pillowball top mounts. Feal Suspension ships their coilover kit with a setup sheet, read it before you reach for the spanner wrench. Tein kits are generally the most straightforward to install, with conventional top mount hardware on most platforms.
None of these brands assume the installer knows their product. Their documentation is thorough. If you have not installed a coilover kit from a particular brand before, download their installation guide first. Read it before your appointment, not during it.
Need Help Choosing the Right Kit Before You Install?
The installation process is the same across most platforms. What changes is which kit is right for your car, your budget, and how you drive it. That is the conversation we have with customers every day.
BC Racing, KW, Fortune Auto, Ohlins, Feal, Tein. We know which ones work best on which platforms and we will give you a straight answer. No runaround.
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