Function Factory Performance
Function Factory Performance, founded by Charles Siritho and active since 2019, is a factory-backed team of enthusiasts in Thousand Oaks, California. We rigorously test performance parts on Mustang EcoBoost, Shelby GT500, Porsche GT3, and McLaren 720S platforms, ensuring only top-quality products. As a certified Thorney Motorsport McLaren Independent Specialist and Ceramic Pro Elite Dealer, we offer McLaren, Corvette, and Ford Performance parts plus carbon fiber aerodynamics. Our 5,000 sq. ft., 10-bay facility provides expert McLaren maintenance, repair, and performance services.
Welcome to Function Factory Performance
Ford Performance & McLaren Independent Specialist
Shop By Performance Vehicle
7 Days of Halloween Sale Is Live
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MAZ 2015-2023 Ford Mustang Terminator Hood
$1,199.99Available
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MAZ 2015-2023 Ford Mustang Super Snake Hood
$1,199.99Available
Our Hottest Performance Parts
Motorcraft 2020-2022 Ford Mustang GT500 GT350 OEM Oil Filter – Metal Core
$99.99Contact Us for More Information
ZL1 Addons 2018-2023 Dodge Challenger Widebody Deluxe Rock Guards
$65.99Backorderd - Call or Email For ETA
ZL1 Addons 2015-2023 Ford Mustang GT500 Style Splitter Winglet and Fender Extensions
$192.49Available
Our Tested & Proven Models
FACTORY PROVEN. FACTORY BACKED.
Our crew of passionate car enthusiasts, led by owner and founder Charles Siritho, carefully hand-selects our premier products. We rigorously test many performance parts on our Ford Mustangs and customer vehicles. We only sell those that meet our high quality and performance standards. Our mission is to educate and guide you every step of the way so you can confidently select the best products for your car and your performance needs.
New Fall Season Drops
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Unobtainium 2017-2023 McLaren 720S High Flow Downpipes
$4,373.00 – $7,808.00Price range: $4,373.00 through $7,808.00Available
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FI Exhaust 2017-2023 McLaren 720S High Flow Downpipes
$3,500.00 – $4,800.00Price range: $3,500.00 through $4,800.00Available
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ON SALENEW
MAZ 2015–2023 Ford Mustang OEM Carbon Fiber Trunk
$1,000.00Original price was: $1,000.00.$749.99Current price is: $749.99.Available
ON SALENEW
MAZ 2018-2023 Ford Mustang Mach 1 Style Bumper
$1,000.00Original price was: $1,000.00.$775.00Current price is: $775.00.Available
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MAZ 2015-2026 Ford Mustang Magnetic Paddle Shifters
$225.00 – $285.00Price range: $225.00 through $285.00Available
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MAZ 2018-2023 Ford Mustang GTD Fenders
$999.99 – $1,349.99Price range: $999.99 through $1,349.99Available
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MAZ 2024-2026 Ford Mustang S650 R1 Competizione Bumper
$1,100.00 – $1,550.00Price range: $1,100.00 through $1,550.00Available
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MAZ 2024-2026 Ford Mustang S650 GT3 Hood
$999.99 – $1,549.99Price range: $999.99 through $1,549.99Available
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MAZ 2024-2026 Ford Mustang S650 Ducktail Wing
$400.00 – $750.00Price range: $400.00 through $750.00Available
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Thorney Motorsport of Angeles – McLaren Independent Specialist
Thorney Motorsport has been servicing and maintaining McLarens for 9 years, they are the largest McLaren Independent in the World. They have retained the same staff and management to give you the ultimate depth of knowledge of the cars. Their servicing and maintenance routine is based on what the vehicle needs rather than a fixed ‘tick box’ list of items to be changed. Function Factory Performance is a certified official Thorney Motorsport McLaren Independent Specialist.
Updates & Latest Sales
Keep up with our latest news and sales specials by signing up for our Hot Newsletter. Our news is jam-packed with real-life updates surrounding Function Factory Performance and their quest to become the most premium Mustang & C8 Corvette high-performance provider.
Our Best Selling Mustang Products
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MAZ 2024-2026 Ford Mustang S650 R1 Competizione Bumper
$1,100.00 – $1,550.00Price range: $1,100.00 through $1,550.00Available
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Shop Our Latest Drops
Function Factory Performance
FFP was founded by Charles Siritho in 2017 and was built by enthusiasts based in Thousand Oaks, California.
As a Thorney Motorsport McLaren Independent Specialist, we test and install performance parts for McLaren, Corvette, and Ford platforms inside our facility — delivering results, track-tested performance, and factory-level expertise.
Thorney Motorsport of Los Angeles – McLaren Independent Specialist
Thorney Motorsport, the world’s largest McLaren independent, has spent nearly a decade perfecting McLaren service and maintenance.
Their experienced team focuses on what each car truly needs—not a standard checklist. Function Factory Performance is proud to be a certified Thorney Motorsport McLaren Independent Specialist.
Have any questions?
Support@FFPerformance.coCall us
+1 805 267 9762Professional Services
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Wait, Don't Go Yet!
Hold up—leaving so soon? Your cart’s revving up with some top-tier gear, and it looks like you might be missing out! Just to sweeten the deal, use the discount code Hohoho at checkout for an irresistible price drop. Think of it as our little nudge to help you cross the finish line. Don't let your performance parts feel abandoned—give them the garage space they deserve!
