How to Replace the Rear Shocks on a 2006-2011 Honda Civic Si

The rear shock absorbers in your Honda Civic Si dampen the suspension’s movement to give you and your passengers a smoother ride. Replacing worn shock absorbers on your 2006 to 2011 Honda Civic Si is a simple repair that can improve vehicle balance, handling, tire wear, and the overall ride. If your Honda’s shock absorbers are failing, you may experience excessive rocking, poor handling, oil leaks near the lower shock tube or shaft seal, knocking noises, damaged rubber bushings, or longer braking time. High-temperatures exposure and other weather conditions can contribute to failing shock absorbers, and they should be replaced as soon as you suspect a problem to prevent tire and suspension damage to your vehicle. It’s recommended that you inspect or replace your shocks every 50,000 miles, and both shock absorbers on your Civic should be replaced at the same time since they have experienced the same usage. Our instructions can help you perform a rear shock absorber replacement on your 2006-2011 Honda Civic Si.

Tools & Materials List

Step by Step Instructions

Prepare the Vehicle

Remove the Old Shock

Install the New Shock

Additional Resources

Tools & Materials

Step-by-Step Instructions to Replace the Shocks on a 2006 to 2011 Honda Civic Si

Today, we’ll be changing the rear shocks on this 2008 Civic Si, and procedures will be similar for a lot of these from 2006 to 2011, but be sure to know the specifics for your vehicle before getting started. If you’re not completely comfortable doing this yourself, we’d be happy to recommend a professional technician in your area.

Prepare the Vehicle

O’Reilly Auto Parts mechanic opening the trunk of a 2008 Honda Civic Si

Step 1: Pop the Trunk and Fold Down the Seats

Park on a level surface and pop the trunk. Go ahead and fold the backs of the rear seats forward by pulling the release levers at the top of the trunk. This will be important in a minute.
O’Reilly Auto Parts mechanic using a torque wrench to loosen the lug nuts on a 2008 Honda Civic

Step 2: Loosen the Lug Nuts

Loosen the lug nuts on the back wheels with a 19mm socket.
Mechanic using an ACDelco Floor Jack and Jack Stands to support the Honda Civic Si

Step 3: Jack Up the Vehicle

Jack up the back end and put it on stands.

Do It Right: Unsure how to safely jack up your vehicle? Learn how with this helpful video: How to Safely Lift & Support Your Vehicle

O’Reilly Auto Parts mechanic removing a wheel from the Honda Civic Si

Step 4: Remove the Wheels

Remove the lug nuts and take off the wheels.

Remove the Rear Shocks

AC Delco floor jack pushing up on the Honda Civic’s suspension

Step 5: Place the Floor Jack Under the Suspension

Put the floor jack under the connecting point of the trailing arm and the knuckle and raise it until the suspension begins to compress.
Step 6: Remove the Rear Shock’s Bolt

Step 6: Remove the Rear Shock’s Bolt

Remove the bolt from the bottom of the first shock you’ll be replacing using a 14mm socket.
Mechanic using a screwdriver to loosen and remove the clips and then pulling back the panel

Step 7: Remove the Trunk Side Trim Clips and Panel

Remove the clips securing the trunk side trim panel, then fold it back.
Mechanic wearing gloves loosening the self-locking nut with a wrench

Step 8: Loosen the Self-Locking Nut

Loosen the self-locking nut while holding the shock absorber shaft with a hex wrench.
 O’Reilly Auto Parts Mechanic holding the old rear shock

Step 9: Remove the Shock from the Wheel Well

Compress the shock by hand and remove it from the wheel well. Now, you should be able to remove the old mounting bushing.

Install the New Rear Shock

Mechanic holding a new shock absorber next to the old shock absorber

Step 10: Check the Size of the New Shock

Set the old shock next to your new shock to make sure you have the right replacement. There may be a slight difference in length due to different types of internal rebound bumpers or support springs, but it won’t affect performance.
Mechanic pushing the new shock absorber into the group to prime it

Step 11: Prime the Shock Absorber

Before installation, it is a good idea to prime the shock absorber by fully compressing and letting it extend on its own 4-5 times.

Do It Right: This will ensure that the gas and oil are in the proper position inside the shock and can help prevent unwanted noise when you start driving with the new shock in place.

Top of the new shock absorber with the mounting bushing positioned correctly

Step 12: Install the Mounting Bushing

Install the mounting bushing onto the shock
Mechanic holding the new shock absorber into place in the Honda Civic Si

Step 13: Place the New Shock

Position the new shock absorber between the body and the trailing arm.
Ratchet tightening the mounting bolt to secure the new shock into place

Step 14: Install the Mounting Bolt

Now, install the mounting bolt at the bottom of the shock. Loosely tighten the bolt.
AC Delco floor jack raising the Honda Civic from the lift supports and then a ratchet tightening the bolts

Step 15: Raise the Suspension and Tighten the Bolt

Raise the suspension with the jack until the vehicle lifts from the jack stands, then tighten the bolt to fifty-one foot pounds.
Mounting bushing sitting in the housing, secured.

Step 16: Install the Mounting Bushing

At the top of the shock, install the mounting bushing, washer, and a new self-locking nut. Hold the shaft with a hex wrench or plier and ratcheting wrench, then you can tighten the self-locking nut to twenty-two foot pounds.

Do It Right: Shocks should be replaced in pairs, so repeat these steps on the other side.

Roger from O’Reilly Auto Parts pushing the trunk liner back into place

Step 17: Replace the Trunk Side Trim Lining

Replace the trunk side trim lining and secure it with the trim clips.
Roger from O’Reilly Auto Parts closing the trunk

Step 18: Return the Back Seats and Close the Trunk

Return the back seats to their upright position and close the trunk.
O’Reilly Auto Parts mechanic putting the wheel back into place in the wheel well

Step 19: Replace the Wheel

Replace the wheel and finger tighten the lug nuts so that the wheels are flush against the hub.
Roger from O’Reilly Auto Parts lowing the Honda Civic Si to the ground

Step 20: Lower the Vehicle

Lower the vehicle and use your 19mm socket to tighten the nuts in a star pattern to eighty-foot pounds.

Additional Resources

The automotive repair work depicted in this series is performed under the direction of the manufacturer of the product featured. Prior to undertaking any of the demonstrated repairs on your vehicle, we suggest you consult with a certified mechanic or another professional who can adequately advise you of the proper repair or remedy required. O’Reilly Automotive Stores, Inc. and its affiliates (“O’Reilly”) disclaims any responsibility for injury or damage resulting from a viewer’s attempt to recreate the repairs shown in this series.

These instructions and video explain a rear shock absorber replacement on a 2006, 2007, 2008, 2009, 2010, and 2011 Honda Civic Si, and will be similar for 2006 to 2011 Civic models equipped with an L4 engine. Replacing worn shock absorbers can help you maintain a healthy suspension system, which may help you avoid an accident. If you notice oil leaks near the shock tube or shaft seal, knocking noises, excessive rocking, increased braking time, or poor handling, it is important to replace the rear shock absorbers as soon as possible.