2015-2020 BMW F80 M3 / F82 / F83 M4 - Varis Style Carbon Fiber Diffuser + Undertray

SuperAutoUSA

Product ID: 9112013537454

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$ 1,499.00 USD

2015-2020 BMW F80 M3 / F82 / F83 M4 - Varis Style Carbon Fiber Diffuser + Undertray


HIGHLIGHTS

Part:  Rear Bumper Diffuser / Skid Plate
Fitment:

Fits

  • 2015-2020 BMW F80 M3 Sedan
  • 2015-2020 BMW F82 M4 Coupe
  • 2015-2020 BMW F83 M4 Convertible
Location:  Rear Bumper
Material:  Carbon Fiber
Color Finish:  Carbon Fiber
Type: Screw-on
Product Fit: Direct Fit
Warranty & Returns Policy: Check out our Return Policy for more details.
Quantity Sold:  A set of Rear Bumper Diffuser / Skid Plate and mounting hardware
Installation: Please message us for instructions.

 

Product Features

  • Aggressive V-Style Aero: This high-performance kit features an ultra-aggressive center diffuser with deep vertical strakes, paired with an extended lower undertray. The design creates a "boxed-in" motorsport look that adds significant visual width and depth to the F8X chassis.

  • Authentic 3K Twill Carbon Fiber: Hand-laid using genuine 3K 2x2 twill carbon fiber weave. This isn't a print; it is a high-strength, lightweight structural component finished with a mirror-deep UV-resistant clear coat to prevent yellowing and protect against exhaust heat.

  • Functional Underbody Management: The extended undertray isn't just for show—it smooths the airflow exiting the rear of the vehicle, reducing turbulence and enhancing high-speed stability by creating a more efficient low-pressure zone.

  • Signature M-Series Fitment: Precision-molded for an exacting fit on:

    • BMW M3 Sedan (F80)

    • BMW M4 Coupe (F82) & Convertible (F83)

    • Years: 2015, 2016, 2017, 2018, 2019, 2020.

  • Lightweight & Heat Resistant: Designed to withstand the intense thermal cycles of performance exhaust systems. The carbon fiber construction offers an incredible strength-to-weight ratio, ensuring the aero kit stays rigid even at track speeds.

  • Comprehensive Installation: This system is designed to replace the OEM diffuser. It utilizes factory mounting points combined with provided mechanical hardware to secure the undertray. Professional installation is highly recommended due to the size and complexity of the two-piece assembly.

 

FAQ:

Will this fit with my aftermarket exhaust?

The V-Style system is designed to accommodate most popular 90mm and 102mm quad-tip exhaust systems. However, extreme "straight-pipe" or custom wide-exit setups may require minor trimming of the undertray.

Is all the mounting hardware included?

Yes, the kit comes with the necessary bolts and brackets required to secure the undertray to the main diffuser and the vehicle's subframe points.

Do I need to remove the rear bumper for installation?

While not strictly required, removing the bumper makes the alignment and securing of the undertray significantly easier and is recommended for the best results.

How much lower does the undertray sit compared to stock?

The undertray sits approximately 1 to 1.5 inches lower than the factory plastic trim, providing a much more aggressive stance without making the car impossible to drive on the street.

 

RETURN POLICY
THERE ARE 2 KINDS OF RETURN CASES
_____________________________________________________________

WHAT KIND OF RETURN CAN BE RECOGNIZED AS NON-DEFECTIVE RETURN?
Superautousa ships out right product as product link displayed, and customer want to return:

Customers order wrong product for their car
Customers don’t like the product on personal reason
Customers request return after using or installing the product
Incorrect or mistakenly installation of a product


IMPORTANT NOTICE FOR NON-DEFECTIVE RETURN
If a customer received the wrong product, the customer needs to send an email to info@superautousa.com in 30 days of the item delivery; Otherwise, no return & replacement/refund will be provided from Superautousa.

If a customer received a damaged product, the customer needs to send an email to info@superautousa.com in 72 Hours of the item delivery. Otherwise, no return/replacement/refund will be provided from Superautousa.

Return items must be in the original package box, the products need to be in unused & good condition(in the same condition that you received it). Customers need to send pictures of the shipping labels on the package and the pictures of the product in full view to confirm the condition.
Return address will be provided by Superautousa after non-defective return authorized.
There will be a restocking fee (20% of the order's original purchase price) deducted from the refund for non-defective return.
If Superautousa receives the return item in damaged condition, there will be 50% of the order amount deducted from the refund, we highly recommend customers to purchase package protection/insurance.

IF THE RETURN IS CAUSED BY THE CONSUMER (NON-DEFECTIVE RETURN), CONSUMERS ARE RESPONSIBLE FOR THE SHIPPING FEE. THE SPECIFIC FEE SHOULD BE BASED ON THE EXPRESS COMPANY YOU CHOOSE.


WHAT KIND OF RETURN IS DUE Superautousa?
Superautousa sends the wrong product which is different from the product customer ordered, Superautousa will provide the correct product according to customers’ intention.

Customers receive damaged products, Superautousa will provide replacements.

Customers receive a product that's missing contents, Superautousa will provide replacements. 



IMPORTANT NOTICE FOR ALL RETURN/REFUND REQUEST

Customers need to send an email to info@superautousa.com in 30 days of the item delivery; Otherwise, no return & replacement/refund will be provided from Superautousa.

If a customer received a damaged product, the customer needs to send an email to info@superautousa.com in 72 Hours of delivery. Otherwise, no return/replacement/refund will be provided from Superautousa.

Customers need to feedback the product quality/defective issue once they receive it in 72 Hours. If customer feedback the item issue after installation, this kind of request is not acceptable, Superautousa won't provide return and refund on that order.

Customer need to send pictures in emails, Superautousa will recognize the return reason/confirm the issue(Please send the fitment issue with the required pictures/informations within 10 days after Superautousa send you email to require that/tips as suggested, otherwise the return request will be closed on our end)

Email content include:

  • Return Reason
  • Detail information of your car and pictures of the car (for fitment issue confirmation)
  • Pictures of the fitment issue area, and full test install (for fitment issue confirmation)
  • Pictures of the front look and back view of the products in full view(product condition confirmation)
  • Pictures of the all shipping labels in the package box
  • Picture of damage area of the product (If damaged product received)


Return package without authorization by Superautousa is not acceptable, no replacement or refund will be provided for unauthorized return. Thank you for your understanding!

Orders which have been shipped out and still in transit/shipment cannot be canceled, returned or refunded. Customers need to apply for the return or refund after they receive the products.

For customers with shipping protection, please keep All Packaging and Damaged Goods When filing a claim, keep all packaging and the damaged goods as they were received, as photographs may be required for claims processing. Do not dispose of any shipment materials or goods before the claim is complete.

 

Exchanges

If a customer wishes to exchange for another item, the customer needs to contact info@superautousa.com to request for the exchange.  The customer needs to pay for the price difference (if apply) and pay for the shipping cost.  Superautousa will refund the price difference (if apply) once the exchange request is accepted. 

Order Cancellation

If cancel reason is on Superautousa, we will provide a full refund.  The refund is expected to be received in 5 to 7 business days upon notifying. 

Superautousa accepts all cancellations before fulfillment.

Orders which have been shipped out cannot be canceled, please check if you need to apply the return.
Shipping Fee& Package Shipping Insurance Fee is not refundable.

Refunds

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved. If the product is returned in damaged, used or defective condition, a 50% restocking fee will apply.  If the reason for returning is not due Superautousa, a 20% restocking fee will apply.  If none of the above conditions apply, you will receive a full refund.  Please remember it can take some time for your bank or credit card company to process and post the refund too.
If you have not received your refund for more than 15 business days after we’ve approved your return, please contact us at info@superautousa.com. 

 

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