FITTING GUIDES

How to Install a Rear Diffuser – Step-by-Step Tutorial for Perfect Installation

Why Install a Rear Diffuser?

A rear diffuser improves:

  • Aerodynamics – Reduces drag and increases downforce.
  • Performance – Helps with high-speed stability.

Tools & Materials Needed

Before starting, gather these essentials:

  • Socket wrench & screwdriver (for bolt removal)
  • Trim removal tool (optional, to avoid scratches)
  • New rear diffuser (ASM, OEM, or aftermarket)
  • Gloves (to protect your hands)

Step-by-Step Guide to Fitting a Rear Diffuser

STEP 1: Remove the Side Bolts

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  • Keep the bolts safe for reinstallation.

STEP 2: Unclip the Original Diffuser

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Warning: Use minimal force to avoid causing damage to the bumper.

STEP 3: Align & Install the New ASM Diffuser

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  • Position the new diffuser against the bumper.
  • Apply firm pressure to secure all clips.

Check: Verify that each edge is perfectly aligned with the bumper surface.

STEP 4: Reinstall the OEM Bolts

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Done! Your new rear diffuser is installed.

FAQs About Rear Diffuser Installation

Will a rear diffuser fit any car? 

  • No, diffusers are model-specific. Always check compatibility before purchasing.

It is possible to install a diffuser without taking off the bumper?

  • Yes!

Should I seek mechanic assistance to fit a diffuser on my vehicle?

  • Otherwise, a mechanic can help.

How do I maintain my rear diffuser?

Final Tips for a Perfect Diffuser Fit



Conclusion

Looking fir a High-Quality Diffuser?

If you want a perfectly designed diffuser that fits flawlessly and enhances your car’s aesthetics, explore our ASM Diffusers. 

Made from finest materials and engineered for easy installation, they’re the ideal upgrade for any enthusiasts. 

Browse Our Diffusers Here

Thank your for choosing ASM TUNING

We sincerely trust that our product will align with your expectations.

Let us know if you have any questions.
+44 (0) 121 798 0689
team@asmtuning.co.uk
team@asmtuning.co
Learn More: HOW TO FIT A SPLITTER

DISCLAIMER

These guidelines provided by ASM TUNING are only recommendations, and we highly advise that professional installers handle the installation process. ASM TUNING cannot be held responsible for any damages or liabilities that may occur from following the Company’s guidelines.

It is important to note that the misuse, abuse, or incorrect installation of ASM products may lead to significant vehicle malfunctions. There are potential dangers such as vehicle damage, serious bodily injury, disability, and even death. Any modifications made to your vehicle or someone else’s using ASM products are solely your responsibility.

ASM TUNING will not be accountable for any changes made to vehicles as a result of the misuse or abuse of its products. It is strongly recommended to seek professional installation for the products sold on the asmtuning.co website if you have little to no experience in installing them.

The products are sold as-is, and any damages or injuries sustained during installation or subsequent use of the vehicle are not our responsibility. As proper installation is crucial for the performance and longevity of our products, please carefully review the documentation and test your installation before resuming driving.

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