🔧 Focus - Rear Shock Absorber Replacement

This guide covers replacing the rear shock absorbers on your Focus. The rear shocks control bounce and keep the tires planted, so worn shocks can cause poor ride quality, clunking, tire wear, and longer stopping distance.

Difficulty Level: Beginner | Estimated Time: 1.5-2.5 hours

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⚠️ Safety & Precautions

• ⚠️ Always support your Focus with jack stands. Never work under a vehicle supported only by a jack.
• ⚠️ Replace rear shock absorbers in pairs so both sides dampen evenly.
• ⚠️ The rear suspension can move when the shock is removed. Support the rear lower control arm with a floor jack before removing shock bolts.
• ⚠️ Wear safety glasses and gloves. Road dirt and rust can fall while working under the car.
• ⚠️ Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• 19mm lug nut socket
• Breaker bar 1/2-inch drive
• Ratchet 1/2-inch drive
• 15mm socket
• 18mm socket
• 15mm wrench
• 18mm wrench
• Torque wrench 1/2-inch drive
• Trim clip removal tool
• Flathead screwdriver
• Penetrating oil
• Work gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear shock absorbers - Qty: 2
• Rear shock upper mounting hardware kit - Qty: 2
• Rear shock lower bolts and nuts - Qty: 2

Replace in pairs: Always replace both rear shocks together.

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📋 Before You Begin

• Park your Focus on level ground.
• Set the parking brake and place wheel chocks in front of the front wheels.
• Loosen the rear lug nuts slightly before lifting the car. Do not remove them yet.
• Spray penetrating oil on the upper and lower shock bolts. Let it soak for 5-10 minutes.
• A jack stand is a strong adjustable support stand that holds the vehicle safely after lifting.
• A torque wrench is a tool that tightens bolts to the correct tightness instead of guessing.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Rear Wheel Lug Nuts

• Use a 19mm lug nut socket and breaker bar 1/2-inch drive to loosen each rear wheel lug nut about half a turn.
• Do this while the tires are still on the ground so the wheels do not spin.
• Tip: Push down slowly, not with jerks.

Step 2: Lift and Support the Rear of the Car

• Use the floor jack at the rear lift point to raise the rear of your Focus.
• Place jack stands under the rear side support points.
• Lower the car gently onto the jack stands.
• Keep the floor jack nearby because you will use it to support the suspension arm.

Step 3: Remove the Rear Wheels

• Use the 19mm lug nut socket and ratchet 1/2-inch drive to remove the loosened lug nuts.
• Remove both rear wheels and set them flat under the side of the vehicle as an added safety backup.

Step 4: Support the Rear Lower Control Arm

• Place the floor jack under the rear lower control arm near the shock mount.
• Raise the jack just enough to lightly support the suspension. Do not lift the car off the jack stand.
• The lower control arm is the metal suspension arm that holds the wheel assembly and spring in position.

Step 5: Remove the Lower Shock Bolt

• Use an 18mm socket, 18mm wrench, and ratchet 1/2-inch drive to remove the lower shock mounting bolt and nut.
• If the bolt is tight, apply penetrating oil and work it back and forth slowly with the breaker bar 1/2-inch drive.
• Do not force the suspension downward by hand.

Step 6: Access the Upper Shock Mount

• Open the trunk.
• Use a trim clip removal tool or flathead screwdriver to carefully move the trunk side liner away from the shock tower area.
• The shock tower is the upper body area where the top of the shock attaches.
• Work gently so the plastic clips do not break.

Step 7: Remove the Upper Shock Mount Fasteners

• Use a 15mm socket, 15mm wrench, and ratchet 1/2-inch drive to remove the upper shock mounting fasteners.
• Hold the shock with one hand while removing the last fastener so it does not drop.
• Remove the old shock absorber from the vehicle.

Step 8: Compare the Old and New Shock

• Place the old and new shock absorbers side by side.
• Check that the mounting ends, length, and bushings match.
• If the new shock has a shipping strap or band, do not remove it until you are ready to install it.

Step 9: Install the New Upper Shock Mount

• Position the new shock absorber into the upper mounting area.
• Use a 15mm socket, 15mm wrench, and ratchet 1/2-inch drive to start the upper fasteners by hand first.
• Once the threads are started cleanly, tighten the upper shock fasteners.
• Torque to 35 Nm (26 ft-lbs)
• Tip: Start bolts by hand to avoid cross-threading.

Step 10: Attach the Lower Shock Mount

• Use the floor jack to raise or lower the lower control arm slightly until the lower shock eye lines up with the mounting hole.
• Install the lower shock bolt and nut by hand first.
• Use an 18mm socket, 18mm wrench, and ratchet 1/2-inch drive to snug the bolt.
• Do not fully torque the lower bolt until the suspension is close to normal ride height.

Step 11: Load the Suspension Before Final Tightening

• Use the floor jack under the lower control arm to raise the suspension until it is close to normal ride height.
• This prevents twisting the rubber bushing while the car is sitting on the ground.
• Use the torque wrench 1/2-inch drive, 18mm socket, and 18mm wrench to tighten the lower shock bolt.
• Torque to 115 Nm (85 ft-lbs)

Step 12: Repeat on the Other Side

• Move to the opposite rear shock absorber.
• Use the same tools and repeat Steps 4 through 11.
• Always replace both rear shocks before driving.

Step 13: Reinstall the Trunk Liners

• Use your hands and the trim clip removal tool to reinstall the trunk side liners and plastic clips.
• Make sure the liner sits flat and does not cover loose wiring or hardware.

Step 14: Reinstall the Rear Wheels

• Place each rear wheel back onto the hub.
• Install the lug nuts by hand first.
• Use the 19mm lug nut socket and ratchet 1/2-inch drive to snug the lug nuts in a star pattern.

Step 15: Lower the Car and Torque the Lug Nuts

• Use the floor jack to raise the rear slightly and remove the jack stands.
• Lower your Focus fully to the ground.
• Use the torque wrench 1/2-inch drive and 19mm lug nut socket to tighten the rear lug nuts in a star pattern.
• Torque to 135 Nm (100 ft-lbs)

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✅ After Repair

• ✅ Bounce-test the rear of your Focus by pressing down firmly on the trunk area. It should rise and settle quickly.
• ✅ Test drive slowly at first. Listen for clunks, rattles, or rubbing sounds.
• ✅ After the test drive, recheck the lower shock bolts visually to make sure everything is seated correctly.
• ✅ Recheck rear lug nut torque after 25-50 miles.
• ✅ A wheel alignment is not normally required for rear shock replacement only, but get one if tire wear or pulling is present.

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💰 DIY vs Shop Cost

Shop Cost: $350-$600 (parts + labor)

DIY Cost: $80-$220 (parts only)

You Save: $270-$380 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-2 hours.

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🎯 Ready to get started?

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