Experience Flow-Lock rear diffuser for your Mustang S550 FM, sharing the same durability and technology as our renowned WRX, Golf GTI & MK3 Focus RS line up which is trusted by car enthusiasts worldwide. The rear valance and diffuser fins will clear the Mustang S550 FM dual exhaust tips with ease, and rear bumper removal is not necessary for installation of the diffuser. 10 year warrantyapplies for the rear valance (excludes ABS fins).
The Flow-Lock interlocking system allows for the final assembly of the diffuser fins without tools or fasteners. A simple push and click and the kit is assembled and ready for installation - this means zero exposed hardware giving you the cleanest look for your Mustang S550 FM rear. Front lip splitter is also available for the Mustang S550 FM.
No more L-brackets, no additional exposed hardware and no double-sided tape, experience the Flow-Lock difference today!
Valance is installed to the car through bolts and nuts while the Flow-Lock diffuser fins simply click into the valance (once locked into the valance it is secure). It is also possible to install when your car is on the ground.
GT Mustang S550 FM Rear Diffuser Kit Includes:
Mustang S550 FM rear diffuser (rear valance and Flow-Lock diffuser fins)
2 Flow Designs stickers
Fitting kit
GT Mustang S550 FM Rear Diffuser Material & Finish:
Please note that although all our precision-made ABS accessories are extremely strong and durable, they do not hold the same shatterproof label as our 10mm thick polyethylene composite splitters. The accessories are manufactured in ABS with the intention that they will be lighter, bolt-on attachments that will improve aesthetics and are easily replaceable if they become damaged from varying road conditions.
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Refund Policy
Return & Refund Policy
If you are unhappy with your purchase, as long as you contact us within 30 days from the receipt of the item, we will process your return/exchange request. Please make sure to contact us by email vicky.lan.xu@gmail.com at first.
Return & Exchange Conditions:
All return items must include original packaging, tags, and must be in brand new condition.
All returns must include a return form, which can be obtained by contacting our customer service team.
Returns must be made within fifteen (15) days of delivery date.
Items that have been used, altered, washed or damaged will not be accepted for return or exchange.
Non-returnable items:
The following items are non-returnable:
Personalized or customized items.
Items marked as final sale.
Gift cards and vouchers.
General Return Process:
Contact our customer service team to initiate a return request and receive a return form.
Fill out the return form and include it with your return package.
Pack the item securely, and include any accessories, tags, and original packaging.
Ship the item back to us using a trackable shipping method.
Return Charge:
The customer is responsible for all shipping charges related to returns or exchanges, unless the item received was damaged or defective.
Refunds:
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If your return is approved, a refund will be processed to your original method of payment within fourteen (14) business days. The time it takes for the refund to post to your account may vary depending on your bank or credit card company.
Order Cancellations:
We are unable to cancel orders once they have been shipped. If you wish to cancel an order that has already been shipped, please initiate a return once you receive the item.
Product Damage:
If you receive a damaged or defective item, please contact our customer service team within forty-eight (48) hours of delivery to initiate a return or exchange. We will provide a return label and instructions on how to return the item.