WELCOME TO FUNCTION FACTORY PERFORMANCE
Factory Proven. Factory Backed. — Premium performance parts & expert installation since 2017
FIND PARTS FOR YOUR VEHICLE
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CHOOSE YOUR PLATFORM
Premium performance parts for the world's most exciting vehicles
BEST SELLERS
Our most popular performance parts — proven by thousands of enthusiasts
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ISR Performance Driveshaft – LS Swap S13 Non ABS – Steel
$465.03Contact Us for More Information
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Radium Engineering Dual External Bosch 044 Vertical Fuel Surge Tank (Pumps Not Included)
$549.95Contact Us for More Information
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Roush Performance 2015-2020 Ford F-150 20-Inch Wheel with Rim Guard and BFG KO2 Tire
$779.99Contact Us for More Information
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Roush Performance 2011-2014 Ford Mustang / F-150 Serpentine Belt, 6K 2085 Length FEAD
$50.00Backorderd - Call or Email For ETA
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 performance parts on our Ford Mustangs, McLarens, and customer vehicles.
"We built FFP to be the shop we always wished existed — expert knowledge, premium parts, and no BS."
NEW ARRIVALS
Fresh drops — just landed in our warehouse
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Roush Performance 2011-2014 Ford Mustang Supercharger Kit, Phase 2, Calibrated, 625HP, Black R2300
$7,499.99Contact Us for More Information
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Roush Performance 2015-2020 Ford Mustang ROUSH Pedal Kit Automatic Transmission
$229.00Contact Us for More Information
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Roush Performance 2015-2021 Ford Mustang Rear Spoiler – Black
$489.99Contact Us for More Information
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Roush Performance 2005-2009 Ford Mustang Side Skirt Kit, LH & RH, Unpainted
$599.99Contact Us for More Information
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Roush Performance 2015-2017 Ford Mustang 5.0L V8 Quad Tip ACTIVE Exhaust Kit (REQUIRES ROUSH REAR VALANCE) (FASTBACK + CONVERTIBLE)
$2,967.99Contact Us for More Information
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Roush Performance 2015-2017 Ford Mustang 5.0L V8 Quad Tip ACTIVE-READY Exhaust Kit (REQUIRES ROUSH REAR VALANCE) (FASTBACK + CONVERTIBLE)
$1,542.99Contact Us for More Information
Certified Specialist
THORNEY MOTORSPORT OF LOS ANGELES
Factory-trained Thorney Motorsport independent specialist. Expert service, genuine parts, and performance upgrades for all McLaren models.
McLAREN EXTENDED WARRANTY COVERAGE
Protect your investment with comprehensive coverage from Thorney Motorsport — the UK's leading independent McLaren specialists.
FROM THE BLOG
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Explore All Articles
Browse our complete collection of build features and guides.
LET'S TALK PERFORMANCE
Questions about parts? Need install advice? Our team of enthusiasts is here to help you build the perfect setup.
805-267-9762