How to Replace Rear Shock Absorbers on a 2019-2023 Mazda CX-5
Step-by-step DIY guide with tools, parts, torque specs, safety tips, and cost savings for 2019, 2020, 2021, 2022, 2023
How to Replace Rear Shock Absorbers on a 2019-2023 Mazda CX-5
Step-by-step DIY guide with tools, parts, torque specs, safety tips, and cost savings for 2019, 2020, 2021, 2022, 2023
🔧 CX-5 - Shock Absorber Replacement
This repair covers replacing the rear shock absorbers on your CX-5. The shock absorbers control bounce and help keep the tires planted, so worn shocks can cause a floaty ride, poor handling, uneven tire wear, or clunking over bumps.
Difficulty Level: Intermediate | Estimated Time: 1.5-2.5 hours
⚠️ Safety & Precautions
- ⚠️ Work on a flat, solid surface and never rely on a jack alone.
- ⚠️ Always support your CX-5 with jack stands before working underneath it.
- ⚠️ Replace rear shock absorbers in pairs so both sides handle the same.
- ⚠️ Do not remove suspension bolts while the suspension is hanging unless instructed; final tightening should be done at normal ride height to avoid bushing damage.
- ⚠️ The rear shock is separate from the spring on your CX-5, so no spring compressor is normally needed for rear shock replacement.
🔧 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
- 21mm lug nut socket
- Breaker bar 1/2-inch drive
- Ratchet 1/2-inch drive
- Ratchet 3/8-inch drive
- 14mm socket
- 17mm socket
- 17mm wrench
- Torque wrench 1/2-inch drive
- Torque wrench 3/8-inch drive
- Trim clip removal tool
- Flat-head screwdriver
- Penetrating oil
- Paint marker
- Rubber mallet
- Safety glasses
- Mechanic gloves
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Rear shock absorbers - Qty: 2
- Rear shock upper mounting nuts - Qty: 4
- Rear shock lower mounting bolts - Qty: 2
- Rear shock lower mounting nuts - Qty: 2
📋 Before You Begin
- 🅿️ Park your CX-5 on level ground, shift to Park, and apply the parking brake.
- 🧱 Place wheel chocks in front of the front tires. Wheel chocks are wedge blocks that stop the vehicle from rolling.
- 🔩 Slightly loosen the rear lug nuts before lifting the vehicle.
- 🧴 Spray penetrating oil on the lower shock bolts and nuts if they look rusty.
- 🖊️ Use a paint marker to mark the position of the lower shock hardware before removal.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Loosen the Rear Wheel Lug Nuts
- Use a 21mm lug nut socket and breaker bar 1/2-inch drive to loosen each rear lug nut about half a turn.
- Do not remove the lug nuts yet.
- Loosen before lifting for safety.
Step 2: Lift and Support the Rear of the Vehicle
- Use a floor jack (rated 2-ton minimum) to lift the rear of your CX-5 at the rear center jacking point.
- Place jack stands (rated 2-ton minimum) under the rear side support points.
- Lower the vehicle gently onto the jack stands.
- Keep the floor jack lightly supporting the rear suspension area as an extra safety backup.
Step 3: Remove the Rear Wheels
- Use the 21mm lug nut socket and ratchet 1/2-inch drive to remove the rear lug nuts.
- Remove both rear wheels and set them flat on the ground.
Step 4: Support the Rear Suspension Arm
- Place the floor jack (rated 2-ton minimum) under the rear lower control arm near the shock absorber.
- Raise the jack just enough to support the arm. Do not lift the vehicle off the jack stand.
- The lower control arm is the metal suspension arm that holds the wheel hub area from below.
Step 5: Remove the Lower Shock Mounting Bolt
- Use a 17mm socket, ratchet 1/2-inch drive, and 17mm wrench to remove the lower shock absorber nut and bolt.
- If the bolt is stuck, apply penetrating oil and tap it gently with a rubber mallet.
- Do not force the bolt at an angle, because that can damage the mount.
Step 6: Access the Upper Shock Mount
- Use a trim clip removal tool or flat-head screwdriver to carefully remove the small plastic clips or cover near the upper shock mount area inside the rear wheel well.
- Work slowly so the clips do not break.
- The upper mount is where the top of the shock bolts to the body.
Step 7: Remove the Upper Shock Mounting Nuts
- Use a 14mm socket and ratchet 3/8-inch drive to remove the two upper shock absorber mounting nuts.
- Hold the shock absorber with one hand while removing the final nut so it does not drop.
- Remove the shock absorber from the wheel well.
Step 8: Compare the New and Old Shock Absorbers
- Place the new rear shock absorber next to the old one.
- Make sure the length, mounting holes, and upper mount design match.
- If the new shock has a shipping strap, leave it on until you are ready to install it.
Step 9: Install the New Shock Absorber Upper Mount
- Position the new shock absorber into the upper mount area by hand.
- Install the new upper mounting nuts by hand first to prevent cross-threading.
- Use a 14mm socket and torque wrench 3/8-inch drive to tighten the upper nuts to Torque to 36-46 Nm (27-34 ft-lbs).
Step 10: Install the Lower Shock Mounting Bolt
- Use the floor jack (rated 2-ton minimum) to raise or lower the rear lower control arm until the shock eye lines up with the mounting hole.
- Slide the new lower bolt through the mount by hand.
- Install the new lower nut by hand.
- Use a 17mm socket, 17mm wrench, and ratchet 1/2-inch drive to snug the lower bolt, but do not fully torque it yet.
Step 11: Repeat on the Other Side
- Repeat Steps 4 through 10 on the opposite rear shock absorber.
- Use the same tools and keep both sides matched.
- Always replace shocks in pairs.
Step 12: Load the Suspension Before Final Torque
- Use the floor jack (rated 2-ton minimum) under each rear lower control arm to raise the suspension close to normal ride height.
- Normal ride height means the suspension is sitting about where it would be with the vehicle on the ground.
- This prevents twisting the rubber bushing when tightening the lower shock bolt.
Step 13: Torque the Lower Shock Bolts
- Use a 17mm socket, 17mm wrench, and torque wrench 1/2-inch drive to tighten each lower shock bolt to Torque to 85-105 Nm (63-77 ft-lbs).
- Make sure the bolt head and nut sit flat against the mounting bracket.
Step 14: Reinstall Wheel Well Covers or Clips
- Use your hands and the trim clip removal tool if needed to reinstall any removed covers or plastic clips.
- Make sure the liner is secure and not rubbing the shock absorber.
Step 15: Reinstall the Rear Wheels
- Place each wheel back onto the hub by hand.
- Install the lug nuts by hand first.
- Use the 21mm lug nut socket and ratchet 1/2-inch drive to snug the lug nuts in a star pattern.
Step 16: Lower the Vehicle and Torque the Lug Nuts
- Use the floor jack (rated 2-ton minimum) to lift the rear slightly off the jack stands.
- Remove the jack stands (rated 2-ton minimum).
- Lower your CX-5 completely to the ground.
- Use the 21mm lug nut socket and torque wrench 1/2-inch drive to tighten the rear lug nuts in a star pattern to Torque to 108-147 Nm (80-108 ft-lbs).
✅ After Repair
- ✅ Bounce each rear corner of your CX-5 by hand. It should settle quickly without repeated bouncing.
- ✅ Take a slow test drive over small bumps and listen for clunks or rattles.
- ✅ Recheck the lower shock bolts and wheel lug nuts after the test drive.
- ✅ A wheel alignment is not usually required for rear shock replacement only, but get one if the vehicle pulls, the steering wheel is off-center, or tire wear is uneven.
💰 DIY vs Shop Cost
Shop Cost: $350-$650 (parts + labor)
DIY Cost: $120-$280 (parts only)
You Save: $230-$370 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.











