How to adjust tein coilovers

Written by alexander eliot
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TEIN produces a wide range of adjustable coilover suspension systems for most vehicle makes and models. TEIN's entry-level coilover systems are a perfect suspension upgrade for street-driven vehicles, as they offer a ride quality close to stock, while improving handling performance and offering an adjustable vehicle ride height. TEIN also produces more expensive, race-inspired coilover systems that provide optimum handling performance on track-driven vehicles. All TEIN coilovers feature a threaded shock body that allows for adjusting the total shock length, thus altering the overall ride height of your vehicle.

Skill level:
Moderately Challenging

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Things you need

  • Floor jack
  • Jack stands
  • Socket wrench
  • Socket set
  • Shock collar adjustment wrenches
  • Tape measure
  • Torque wrench

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  1. 1

    Park your vehicle on a solid, even surface to allow for safely raising the vehicle. Raise each side of the vehicle with a floor jack, and support each corner of the chassis on a jack stand.

  2. 2

    Use a socket wrench to remove the lug bolts securing the wheels to the axle, then lift the wheels free and set them aside. This gives you access to the TEIN coilover system's threaded shock bodies, mounted in each wheel well.

  3. 3

    Use the shock collar adjustment wrenches supplied with your TEIN coilover set to loosen the lower locking collar on any of the four coilover shocks. The lower locking ring is tightened onto the lower shock body near the base of the shock. TEIN locking collars feature square-cut grooves which can be hooked with the tips of the adjustment wrenches. Once you securely hook the adjustment wrench into one of the locking collar grooves, loosen and thread the locking collar up the shock body by rotating it counterclockwise.

  4. 4

    Grip the upper shock body locking collar with one of the collar adjustment wrenches. Since the lower shock body locking collar is loose, turning the upper locking collar will rotate the entire upper shock assembly, threading it into or out of the lower shock body. This will effectively adjust your vehicle's ride height. Use a tape measure to determine the exact adjustment in shock length, as you will need to set all four coilover shocks to the same length for an even vehicle ride height.

  5. 5

    Thread the upper shock body down into the lower body by turning the adjustment collar clockwise. This will reduce the overall shock length, and thus reduce your vehicle's ride height. Alternatively, turn the upper shock body counterclockwise to lengthen the overall shock body and increase the ride height. Once the desired ride height is achieved, thread the lower locking collar down onto the lower shock body, and tighten it in place with the collar adjustment wrench.

  6. 6

    Repeat Steps 3 through 5 for each of the other three coilover shocks, ensuring that each shock is set at an equal length. Replace the wheels and thread the lug nuts back in place. Use a torque wrench to torque the lug nuts to your vehicle manufacturer's specifications, which will be listed in your vehicle's shop maintenance manual and/or owner's manual. Remove the jack stands from under the vehicle, and lower it off the floor jack.

  7. 7

    Have your tires and suspension realigned by a professional alignment shop. Adjusting the TEIN coilover ride height will also affect other suspension dynamics, such as the tire camber angle. Failing to realign the tires and suspension after adjustment can lead to uneven tire wear and/or poor vehicle handling.

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