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 MagnumFORCE Intakes Stage-2 Pro DRY S 11-13 Dodge Challenger/Charger/Chrysler 300 V6 3.6L (blk)
- Regular price
- $433.00
- Regular price
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- Sale price
- $433.00
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Easy to install one piece 16-gauge powder-coated heat shield requires no cutting or drilling. Stylish powder-coated steel or brushed aluminum cover blocks heat and directs cold air to the filter w... -
aFe Takeda Momentum Pro 5R Cold Air Intake System 12-16 Subaru Impreza H4-2.0L
- Regular price
- $372.00
- Regular price
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- Sale price
- $372.00
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This aFe POWER Pro 5R is a 7-1/2†tall, pre-oiled, 360-degree radial flow performance air filter with five layers of progressively finer cotton gauze media for maximum performance. It provides yo... -
aFe MagnumFORCE Intakes Stage-2 P5R AIS P5R; Ford F-250/350 11-12 V8-6.2L (blk)
- Regular price
- $384.00
- Regular price
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- Sale price
- $384.00
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Easy to install one piece 16-gauge powder-coated heat shield requires no cutting or drilling. Stylish powder-coated steel or brushed aluminum cover blocks heat and directs cold air to the filter w... -
aFe 23-24 GM Colorado/Canyon L4-2.7L (t) Momentum GT Cold Air Intake System w/ Pro 5R Filter
- Regular price
- $420.00
- Regular price
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- Sale price
- $420.00
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Momentum’s innovative filter-to-housing interface was built to feature the largest air filter possible. This 9" tall 360-degree radial flow air filter features our pre-oiled Pro 5R media with fiv... -
aFe 23-24 Honda Civic Type R Takeda Momentum Cold Air Intake System w/ Pro 5R Filter
- Regular price
- $420.00
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- Sale price
- $420.00
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Momentum’s innovative filter-to-housing interface was built to feature the largest air filter possible. This 7.5†tall 360-degree radial flow air filter features a 3.5" flange and our pre-oiled... -
aFe Takeda Momentum Pro 5R Cold Air Intake System Subaru WRX STI 18-19 H4-2.5L
- Regular price
- $408.00
- Regular price
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- Sale price
- $408.00
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Large Five Layer Performance Air Filter: Momentum's innovative filter-to-housing interface was built to feature the largest air filter possible. This 7-1/2 IN tall 360-degree radial flow air filter... -
aFe Takeda Momentum Pro Dry S Cold Air Intake System 17-19 Honda Ridgeline V6-3.5L
- Regular price
- $408.00
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- Sale price
- $408.00
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Unique One-Piece Housing:The smooth one-piece sealed housing, constructed of heat-resistant cross-linked polyethylene (XLPE), features our patent-pending filter-to-housing interface. Its innovative... -
aFe 18-21 Kia Stinger L4 2.0L (t) Takeda Stage-2 Cold Air Intake System w/ Pro 5R Filter
- Regular price
- $361.00
- Regular price
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- Sale price
- $361.00
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This 360-degree radial flow air filter features a 4" flange and our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. It provides your engin...
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MagnaFlow Conv DF 06-09 Chevy Trailblazer SS 6.0L SS *NOT FOR SALE IN CALIFORNIA*
- Regular price
- $974.00
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- Sale price
- $974.00
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Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93496. With features including free-flowing mandrel-bent tubing and highly corrosion res... -
AWE Tuning 2015+ Dodge Challenger 6.4L/6.2L SC Track Edition Exhaust - Quad Chrome Silver Tips
- Regular price
- $1,745.00
- Regular price
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$1,836.84 - Sale price
- $1,745.00
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Rage. Amplified. For those who like it raw and rowdy, the Track Edition is for you. The Track Edition shares the same integrated H-pipe and precision engineering as its Touring Edition counterpart,... -
AWE Tuning 11-24 Dodge Durango 5.7L Touring Edition Exhaust w/ Diamond Black Tips
- Regular price
- $1,795.00
- Regular price
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$1,889.47 - Sale price
- $1,795.00
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The Touring Edition is a full 3†straight-through stainless steel cat back configuration capable of delivering optimal power while remaining drone-free throughout the entire rev range. Featuring ... -
MBRP Universal T304 SS Dual Tip 3.5in OD/2.5in Inlet
- Regular price
- $124.99
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$154.40 - Sale price
- $124.99
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The exhaust tip is the crowning touch to your performance exhaust. It is your opportunity to really show off your personal style. That's why MBRP offers such a wide assortment of high quality, bolt... -
Invidia 22+ Toyota GR Corolla Q300 Rolled S.S Tip Cat-Back
- Regular price
- $756.00
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$1,080.00 - Sale price
- $756.00
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Invidia 22+ Toyota GR Corolla Q300 Rolled S.S Tip Cat-Back -
Borla 2019 RAM 1500 5.7L V8 AT 4DR Crew Cab Short Bed Touring SS Catback Exhaust
- Regular price
- $1,265.99
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$1,417.99 - Sale price
- $1,265.99
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Fits through the factory bumper cut-outs. Includes the Rebel. Does NOT fit Ram Classic. This system features bright chrome on T-304 stainless steel tips. BORLA(r) Cat-Back(tm) and Axle-Back multi-c... -
Invidia 22+ Toyota GR Corolla R400 Rolled Titanium Tip Cat-Back
- Regular price
- $861.00
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$1,230.00 - Sale price
- $861.00
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Invidia 22+ Toyota GR Corolla R400 Rolled Titanium Tip Cat-Back -
Borla 22-24 Nissan Z 2.5in ATAK Cat Back Exhaust 4.5in Tip - Carbon Fiber Black Anodized
- Regular price
- $2,319.99
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$2,598.99 - Sale price
- $2,319.99
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This system is a True Dual design that features a Resonator with an Internal H-Pipe, Polyphonic Harmonizer technolgy, and SwitchFire techology. All of these features combine to create the ATAK soun...
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Steeda Mustang Sport Lowering Springs - Convertible (2005-2014) - SKU: 555-8220
- Regular price
- $379.95
- Regular price
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- Sale price
- $379.95
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Transform the look and performance of your Mustang Convertible with the Steeda Sport Lowering Springs. Designed for 2005-2014 models, these springs lower the vehicle approximately 1" in the front a... -
H&R 15-20 BMW M4 Cabrio F83 Sport Spring (Incl. Adaptive M Susp./Incl. Competition Package)
- Regular price
- $549.00
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- Sale price
- $549.00
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Sport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce b... -
Eibach 23-24 Toyota Prius 2.0L AWD/FWD XW60 Sportline-Kit (Set of 4 Springs)
- Regular price
- $355.00
- Regular price
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$394.44 - Sale price
- $355.00
- Unit price
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Eibach 23-24 Toyota Prius 2.0L AWD/FWD XW60 Sportline-Kit (Set of 4 Springs) -
H&R 20-23 Audi RS6 Avant VTF Adjustable Lowering Springs
- Regular price
- $1,880.00
- Regular price
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- Sale price
- $1,880.00
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H&R 20-23 Audi RS6 Avant VTF Adjustable Lowering Springs -
H&R 85-91 BMW 325e/325i/325is E30 Sport Spring (Non Cabrio or ix)
- Regular price
- $439.00
- Regular price
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- Sale price
- $439.00
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Sport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce b... -
Pedders Rear Spring Low 2005-2014 Mustang EACH
- Regular price
- $107.96
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$119.95 - Sale price
- $107.96
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Pedders has played a prominent role in the Australian automotive aftermarket industry 1950. In the summer of 2006 Pedders USA became a reality by selling specialised parts to automotive wholesalers... -
Pedders 08-09 Pontiac G8 SportsRyder Super Low Springs
- Regular price
- $368.96
- Regular price
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$409.95 - Sale price
- $368.96
- Unit price
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Pedders has played a prominent role in the Australian automotive aftermarket industry 1950. In the summer of 2006 Pedders USA became a reality by selling specialised parts to automotive wholesalers... -
Steeda Mustang Ultralite Extreme Lowering Springs - Linear GT/V6/EcoBoost (2015-2023) - SKU: 555-8214
- Regular price
- $319.95
- Regular price
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- Sale price
- $319.95
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Upgrade your 2015-2023 Ford S550 Mustang GT, EcoBoost, or V6 with Steeda Ultralite Extreme Linear Lowering Springs, designed to provide a dramatic improvement in handling, aerodynamics, and vehicle...
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SPECIAL PRODUCTS
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2021+ BMW G80 M3 License Plate Relocation Kit
- Regular price
- $79.95
- Regular price
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$88.00 - Sale price
- $79.95
- Unit price
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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
- $99.99
- Regular price
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$105.54 - Sale price
- $99.99
- Unit price
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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 16-21 Mazda MX-5 Miata Kagu Floorliner Set - Black
- Regular price
- $97.99
- Regular price
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$103.14 - Sale price
- $97.99
- Unit price
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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
- Regular price
- $90.99
- Regular price
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$95.94 - Sale price
- $90.99
- Unit price
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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...
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