SKU: 30351382746

Flow Designs GT Mustang S550 FM Rear Spat Winglets (Pair)

Sale price$76.49 Regular price$84.99
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Flow Designs GT Mustang S550 FM Rear Spat Winglets (Pair)Suits 2015 2017 Ford Mustang GT S550 FM INSTALL DOES NOT REQUIRE REAR BUMPER REMOVAL Details Our adjustable rear spat winglets will bolt directly onto our Mustang S550 FM rear spats thanks to the pre pressed in threaded brass fittings on our rear spats. Fitting kit is provided to ensure perfect fitment and can be adjusted to your liking. Adjustments can be made anywhere between 5mm 20mm on each side increasing the overall width up to 40mm! The Mustang

Suits 2015-2017 Ford Mustang GT S550 FM

INSTALL DOES NOT REQUIRE REAR BUMPER REMOVAL


Details

Our adjustable rear spat winglets will bolt directly onto our Mustang S550 FM rear spats thanks to the pre-pressed in threaded brass fittings on our rear spats. Fitting kit is provided to ensure perfect fitment and can be adjusted to your liking. Adjustments can be made anywhere between 5mm-20mm on each side increasing the overall width up to 40mm!

The Mustang S550 FM body kit range shares the same durability and technology as our renowned WRX, Golf GTI and Focus RS line up which is trusted by car enthusiasts worldwide.

Mustang S550 FM rear spats sold separately. 


GT Mustang S550 FM Rear Spat Winglets Kit Includes:

  • Mustang S550 FM adjustable rear winglets (pair)
  • 2 Flow Designs stickers
  • Does not include Fitting kit (supplied when purchased with rear spats)

GT Mustang S550 FM Rear Spat Winglets Kit Material & Finish:

  • 4.5mm thick textured ABS 
  • Scratch resistant textured ABS plastic

Others Who Own This Kit:

Use of ABS Plastic

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.

Install Instructions (PDF)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30351382746

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4.0 ★★★★★
Based on 14 reviews
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Product Reviews
C
Verified Purchase
Carb was beautiful once I got it tune in, cranks great runs smooth I would buy it again if needed
Grantham, US
★★★★★ 5
For motorcycles
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great stuff, good price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
J
Verified Purchase
JNL
Draper, US
★★★★★ 5
The best lower unit gear oil I have used
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
I have been boating my whole life, this is by far the best gear oil. I use this in my Johnson 115 even though this is technically made by Mercury. I seem to get less if any water intrusion into my gearcase with this oil. If there is any, the oil emulsifies the water and continues to protect the gears. I have had better luck with this than Pennzoil marine or others. Highly recommend. It is a blue color and easy to drain and fill.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
D
Verified Purchase
Debra
Fort Morgan, US
★★★★★ 5
Great
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great lube for the boat
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
J
Verified Purchase
Joshua Murray
New York, US
★★★★★ 5
recommend
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
C
Verified Purchase
Christopher C.
Belleville, US
★★★★★ 4
Does not come with a pump.
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself. The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that. The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)
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Reviewed in the United States on October 28, 2025

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