Replacement or add-on
Check whether the design replaces the lower bumper valance or adds to the existing bumper. Compare the mounting points, included pieces and required bumper version.
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VICREZ AERODYNAMICS
Rear Diffusers
Finish the rear view. Find a diffuser for your vehicle, then match the bumper, exhaust openings and style to your build.
Featured build shown. Product fitment and finish vary by SKU.
Start with your vehicle
Choose your year, make and model. Check the exact trim and rear-bumper style before ordering.
Loading vehicle options…
Shopping for BMW, Audi or another make? Use the dropdowns to explore the full catalog. Confirm aftermarket bumper and exhaust changes separately.
Before checkout: check these three details
Rear bumper & trim
Match the listed bumper, body style and model years. Standard, sport and widebody versions can use different parts.
Exhaust openings
Compare tip shape, position and clearance, especially with an aftermarket exhaust. Check whether tips are included.
Finish & installation
Confirm the supplied finish, hardware and any LED wiring. Review test-fitting, painting and installation requirements.
Have a modified bumper or conflicting product details? Send the team the SKU and a rear-bumper photo before ordering.
Shop rear diffusers for your build
Compare the exact bumper fitment, exhaust openings and supplied finish on each product.
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CHOOSE YOUR REAR-END DESIGN
Compare the part, material and finish
Material & surface
Read the construction and finish separately. ABS, polypropylene and carbon-fiber listings have different specifications; a carbon-look surface does not establish carbon-fiber construction.
Fins, tips & lighting
Compare the shape and position of the fins, exhaust openings and any LED option. Photos help with styling; the included-parts list defines what comes with the SKU.
Test-fit before finishing the part
Have your installer confirm the bumper match, mounting points and exhaust clearance before paint, drilling or other modifications. Review the product instructions and current return terms first.
Ask the aerodynamics team →VICREZDRIVER BUILD INSPIRATION
Explore the look on different vehicles
Challenger CP style
See the CP diffuser design on a Dodge Challenger and consider the look for your build.
View the feature →Kia Stinger Centa VR2 style
Explore another rear-end design and how the diffuser pairs with the vehicle’s styling.
View the feature →Use these VicrezDriver features for styling ideas. Check the current product page and instructions for fitment, included parts and installation requirements.
QUESTIONS BEFORE CHECKOUT
Rear diffuser FAQs
How do I find a rear diffuser that fits my vehicle?
Start with your year, make and model, then check the exact product’s trim, bumper and body-style requirements. Standard, sport and widebody bumpers can differ within the same model year. Vehicle selection narrows the catalog; it does not replace the product’s fitment notes.
Will a diffuser fit an aftermarket or widebody bumper?
Only if the selected product lists that bumper or conversion. A diffuser designed for one factory bumper may not fit another trim or an aftermarket bumper. Share the diffuser SKU and clear rear-bumper photos with the Vicrez team before ordering if the configuration is uncertain.
Will my exhaust tips fit the diffuser openings?
Compare the listed openings with your tip shape, size, position and exhaust configuration. Aftermarket exhaust systems may change the clearance. Check whether tips are included, sold separately or only shown in the photos, and have your installer confirm the fit.
What is the difference between material and finish?
Material describes the part’s construction, such as ABS, polypropylene or carbon fiber when specified. Finish describes its surface or appearance. A carbon-fiber-look finish is not the same as carbon-fiber construction. Read both fields on the selected product.
Does the diffuser arrive painted or ready to install?
The finish depends on the SKU. Some listings specify an unpainted part that requires preparation and painting; others describe a finished surface. Resolve conflicting finish details with the team before ordering, and test-fit the part before painting or modifying it.
Does installation require drilling or bumper removal?
Installation requirements vary by vehicle, bumper and diffuser design. Check the instructions and included hardware for the exact SKU. Drilling, trimming, bumper removal or professional installation may be required; do not assume every diffuser is a direct bolt-on.
Are lights, wiring and mounting hardware included?
Check the included-parts list for the selected SKU. LED versions may require wiring, and the photos may show separate accessories. Confirm the light, wiring components, hardware and any additional installation work before checkout.
Does a rear diffuser improve downforce or fuel economy?
Aerodynamic results depend on the vehicle, underbody, diffuser geometry and operating conditions. Styling alone does not establish a measured performance benefit. Choose for the listed fitment and design, and look for vehicle-specific testing before relying on a downforce, handling or fuel-economy claim.
Match the details to your build.
Have your year, make, model, trim and diffuser SKU ready. Include a rear-bumper photo and details of any bumper or exhaust changes.
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