Welcome to 420 Performance (formerly In Stock Garage)
At 420 Performance, we
specialize in performance parts designed to dominate the road course. While our
primary focus is on enhancing the capabilities of Mustangs, we proudly offer a
wide range of parts for most makes and models. Whether you’re a weekend racer
or a dedicated track enthusiast, we’re here to help you elevate your
performance to the next level
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Popular Vehicles
Popular Product Categories
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aFe Takeda Stage-2 Pro 5R Cold Air Intake System 13-18 Nissan Altima I4 2.5L- Regular price
- $336.00
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- Sale price
- $336.00
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Large 3-Layer Performance Air Filter: This intake system utilizes an oil-free, large 6" tall conical 360 degree radial flow performance air filter with 3-Layer progressively finer porosity syntheti... -
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SLP 2008-2013 Chevrolet Corvette LS3/LS7 Blackwing Cold-Air Induction Package- Regular price
- $349.99
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- Sale price
- $349.99
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Cold-Air Induction, 08-13 C6 Corvette/2010-13 Grand Sport/2006-13 Z06 Blackwing -
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SLP 2001-2004 Chevrolet Corvette LS1 Blackwing Cold-Air Induction Package- Regular price
- $269.99
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- Sale price
- $269.99
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SLP 2001-2004 Chevrolet Corvette LS1 Blackwing Cold-Air Induction Package -
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SLP 1997-2000 Chevrolet Corvette LS1 Blackwing Cold-Air Induction Package- Regular price
- $269.99
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- Sale price
- $269.99
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SLP 1997-2000 Chevrolet Corvette LS1 Blackwing Cold-Air Induction Package -
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SLP 2000-2002 Chevrolet Camaro/Firebird LS1 FlowPac Cold-Air Induction Package- Regular price
- $389.99
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- Sale price
- $389.99
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SLP 2000-2002 Chevrolet Camaro/Firebird LS1 FlowPac Cold-Air Induction Package -
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SLP 1998-1999 Chevrolet Camaro/Firebird LS1 FlowPac Cold-Air Induction Package- Regular price
- $379.99
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- Sale price
- $379.99
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SLP 1998-1999 Chevrolet Camaro/Firebird LS1 FlowPac Cold-Air Induction Package -
K&N 19-24 Chevy Silverado (5.3L/6.2L V8) NextGen Cold Air Intake
- Regular price
- $399.99
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- Sale price
- $399.99
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This K&N NextGen cold air intake system is engineered for CHEV. SILVERADO 1500; V8-5.3/6.2L F/I. A high-density polyethylene (HDPE) rotationally molded tube helps increase the volume of airflow... -
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K&N 21-24 Ford F150 (3.5L V6) NextGen Cold Air Intake- Regular price
- $425.99
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- Sale price
- $425.99
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This K&N NextGen cold air intake system is engineered for your FORD F150/RAPTOR V6-2.7/3.5L F/I. A high-density polyethylene (HDPE) rotationally molded tube helps increase the volume of airflow...
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SaleBorla 05-19 Nissan Frontier 4.0L V6 AT/MT Regular Cab S-type Exhaust (2wd/4wd)- Regular price
- $767.99
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$859.99 - Sale price
- $767.99
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The Borla team has developed an awesome sounding exhaust system for the 2005-2019 Nissan Frontier. The Cat-Back system comes in the S-Type sound level and is specifically tuned for performance and ... -
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SLP 1996-2010 Ford 4.6L High-Flow Catalytic Converter - Pair- Regular price
- $299.99
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- Sale price
- $299.99
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SLP 1996-2010 Ford 4.6L High-Flow Catalytic Converter - Pair -
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SLP 2005-2010 Ford Mustang 4.6/5.4L LoudMouth Axle-Back Exhaust w/ 3.5in Tips- Regular price
- $439.99
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- Sale price
- $439.99
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SLP 2005-2010 Ford Mustang 4.6/5.4L LoudMouth Axle-Back Exhaust w/ 3.5in Tips -
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SLP 1999-2004 Ford Mustang 4.6L LoudMouth II Cat-Back Exhaust System- Regular price
- $639.99
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- Sale price
- $639.99
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SLP 1999-2004 Ford Mustang 4.6L LoudMouth II Cat-Back Exhaust System -
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SLP 1999-2004 Ford Mustang 4.6L LoudMouth Cat-Back Exhaust System- Regular price
- $629.99
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- Sale price
- $629.99
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SLP 1999-2004 Ford Mustang 4.6L LoudMouth Cat-Back Exhaust System -
SLP 2008-2014 Dodge Challenger/Charger/Magnum/300C 5.7L LoudMouth Cat-Back Exhaust System
- Regular price
- $749.99
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- Sale price
- $749.99
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Exhaust System, 2008-14 5.7L Challenger "LoudMouth" (modular); use w/stock exhaust manifolds -
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SLP 2008-2014 Dodge Challenger/Charger/Magnum/300C 6.1/6.4L LoudMouth Cat-Back Exhaust System- Regular price
- $799.99
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- Sale price
- $799.99
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Exhaust System, 2008-14 6.1L/6.4L SRT-8 Challenger "LoudMouth" (modular); use w/stock exhaust manifolds -
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SLP 2005-2014 Dodge Challenger/Charger/Magnum/300C 6.1/6.4L LoudMouth Cat-Back Exhaust System- Regular price
- $789.99
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- Sale price
- $789.99
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Exhaust System, 2005-14 6.1L/6.4L SRT-8 Charger/Magnum/300C "LoudMouth" (modular); use w/#D30003, #D30003A/stock exhaust manifolds
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SaleEibach 21-24 Hyundai Elantra N-Line CN7 Pro-Kit- Regular price
- $355.00
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$394.44 - Sale price
- $355.00
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The Eibach PRO-KIT is a premium line of lowering springs designed to enhance the performance and appearance of your vehicle. Whether you're a car enthusiast looking to improve the handling of your ... -
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Whiteline 2015 VW Golf MK7-R Performance Lowering Springs- Regular price
- $333.88
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- Sale price
- $333.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique combination of linear and p... -
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Whiteline 2015 VW Golf MK7 GTI/GTD Performance Lowering Springs- Regular price
- $333.88
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- Sale price
- $333.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique and progressive rate coil d... -
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Whiteline 2022+ Subaru WRX (VB Chassis) Performance Lowering Springs- Regular price
- $325.88
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- Sale price
- $325.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 4.5kg/mm (253lb/in) front rated springs that provide a 25mm drop... -
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Whiteline 2015+ Subaru WRX Performance Lowering Springs- Regular price
- $333.88
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- Sale price
- $333.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique combination of linear and p... -
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Whiteline 2015+ Subaru STI Performance Lowering Springs- Regular price
- $339.88
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- Sale price
- $339.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique combination of linear and p... -
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Whiteline 2013 Subaru FRS/BRZ/GT86 Performance Lowering Springs- Regular price
- $364.88
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- Sale price
- $364.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique combination of linear and p... -
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Whiteline 08-14 Subaru Impreza WRX GE/GH/GR/GV Performance Lowering Springs- Regular price
- $339.88
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- Sale price
- $339.88
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Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. By lowering the vehicles centre of gravity, the unique combination of linear and p...
SPECIAL PRODUCTS
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![2021+ BMW G80 M3 License Plate Relocation Kit]()
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Sale2021+ BMW G80 M3 License Plate Relocation Kit- Regular price
- $79.95
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$88.00 - Sale price
- $79.95
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BMW designers poured hours of time into the front end of the G8X M3 and M4, crafting every duct and body line to flow seamlessly with the rest of the car…then your local dealership spent 5 minute... -
3D MAXpider 11-19 Nissan Leaf Kagu Cargo Liner - Black
- Regular price
- $79.16
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- Sale price
- $79.16
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3D MAXpider proudly offers you the highest quality floor liners and cargo liners with patented MAXpider fiber backing and innovative 3-layer construction. -
![3D MAXpider 17-21 Genesis G90 AWD Kagu 1st Row Floormats - Black]()
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Sale3D MAXpider 17-21 Genesis G90 AWD Kagu 1st Row Floormats - Black- Regular price
- $90.99
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$95.94 - Sale price
- $90.99
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Unlike the traditional floor mats with heavy weights, commercial rubbery looking; 3D MAXpider custom-fit floor mats are the revolutionary interior protection for your vehicles with an innovative, u... -
![3D MAXpider 17-21 Tesla Model Y Kagu 3rd Row Floormats - Black]()
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Sale3D MAXpider 17-21 Tesla Model Y Kagu 3rd Row Floormats - Black- Regular price
- $68.99
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$71.94 - Sale price
- $68.99
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Unlike the traditional floor mats with heavy weights, commercial rubbery looking; 3D MAXpider custom-fit floor mats are the revolutionary interior protection for your vehicles with an innovative, u...
