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AUDI A4 Parts and Accessories
Showing In Stock Items. Show All 523 Items.
HP Tuners VCM Suite MPVI4 Credit Pro Packages
HP Tuners Introduces VCM Suite MPVI4 Credit Pro packages, the latest evolution of their industry-leading OBDII interface. Built for professionals and enthusiasts alike, the computer programmers connect your vehicle to VCM Suite software (5.2+) for faster, smarter, and more powerful tuning and diagnostics than ever before. With upgraded hardware, expanded connectivity, and future-ready Wi-Fi capabilities, the MPVI4 redefines what's possible in performance calibration and data acquisition. Models are available with 0, 2, 4, 6, or 8 credits. HP Tuners VCM Suite MPVI4 Credit Pro packages feature: * Improved standalone logging: the most powerful device yet, capable of delivering standalone logging performance on par with VCM scanner and a wired connection * Upgraded hardware architecture: New internal processor for improved data throughput and flashing performance; 30x more memory than previous generation MPVI3 * High-speed USB-C connectivity: Faster, more reliable communication with your PC and vehicle * Bluetooth 5.2: Seamless wireless connection for scanning, logging, and TDN support * Wi-Fi ready (future update): Wireless VCM Suite connectivity coming soon * Enhanced storage and efficiency: Increased onboard memory for robust logging sessions * Improved OBDII fitment: A revised, tapered design means a more secure connection and better compatibility with even more makes/models * Built-In Pro feature set: Standard on every MPVI4, enabling standalone data logging and external sensor integration with PROLINK+ * RGB status LEDs: Clear visual indicators for power, connection, and activity status * Cross-Platform Compatibility: Works with VCM Suite (5.2+), TrackAddict, and RaceRender
( 6 )
$399.99
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$499.97
Derale PWM Adjustable Fan Controller Kits
Enhance your engine's performance with a Derale PWM adjustable fan controller kit. Utilizing cutting-edge technology, these Derale Performance fan controllers constantly adjust fan speed to keep the desired engine temperature that can be preset. Additional features include: * Constantly adjust fan speed to maintain the desired temperature * Control multiple electric fans up to 65 amp capacity * Finned aluminum housing * Automatic resetting circuit breaker * Air conditioning override circuit built-in
( 23 )
$343.97
Optima Yellow Top H6 Batteries
From the company that brought you the revered Red Top battery comes the new Optima Yellow Top H6 batteries. Designed to fit a wide range of vehicles with one part number, these batteries are the revolution for battery products. With Optima's tried and true AGM cells, the Yellow Top H6 battery will be the one to beat for years to come. Key features: * Deep-cycle and cranking power * Up to 3 times longer life * 15 times more vibration-resistant * Virtually spill proof * Mountable in virtually any position * Maintenance-free * Faster recharging * Optimal starting power * 300+ discharge/recharge cycles
( 45 )
$369.99
On Sale
XS Power AGM Batteries
XS Power AGM batteries are some of the lightest racing batteries on the market. Independent test results have proven that they outperform other battery models that outweigh these power providers by up to 20 lbs. Cutting-edge lead acid battery technology produces more energy in a smaller space because each cell is compressed before case insertion, resulting in efficient power-producing packages that are completely sealed with no need to ever add water. This design is ideal for the abuse of racing, making these the batteries of choice for demanding racers and Monster Truck drivers who need top performance and reliability. When you are pushing to power the impossible, you need the non-stop capabilities of the XS Power AGM batteries best suited for your application. Product features include: * Designed to be an inch shorter than what the competition offers for fitting in places where space is at a premium * Deep-cycling ability and ultra-low internal resistance results in high cranking amps and excellent vibration resistance * Variable position mounting (except upside-down) thanks to the no-spill design * Offered in 6 V, 12 V, 14 V, and 16 V models
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$399.99
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$489.99
$359.99
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$440.99
Odyssey Performance Series Batteries
Odyssey Performance Series batteries are designed to handle the increased use of on board accessories in today's vehicles. They combine long service life, high reliability, and deep cycle capabilities. Performance batteries provide all the reliability of the Odyssey Extreme Series batteries, without the high cold cranking amps or reserve capacity many people may not require. The Performance Series batteries contain flat plates made of 99.99 percent pure lead--not lead alloy, like many conventional batteries.
( 70 )
$362.99
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$398.99
Maradyne Mach Two Series Electric Fans
Maradyne Mach Two series truck electric fans feature dual 225 W high performance IP68 sealed motors attached to dual 11 in. diameter 5-blade fans to put out over 2,500 cfm of airflow. They have all glass-filled nylon construction and include dual harnesses for an easier installation. The fans are available with different mounting bracket positions, so you can match up with your radiator mounting style.
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$311.05
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$311.84
Nitto NT 555 RII Tires
Nitto NT 555 RII D.O.T.-compliant, competition drag radial tires are designed with additional flexibility for the weekend drag racer. Developed through a unique fusion of race circuit-style, stiff sidewall construction and the popular Nitto Drag radial tread pattern, combined with the high-traction, specially formulated, soft racing tread compound, results in a competition radial that exhibits impressive control and handling, providing maximum traction under severe racing conditions. The sidewall construction is optimized for handling extreme lateral acceleration; vehicles may experience rougher riding when used for daily driving. The Nitto NT 555 RII is designed primarily for competition and road racing. Features include: * Improved dry traction due to high block rigidity, ultra-high grip compound, and large surface area contact with the road * Unique tread provides excellent handling capabilities for daily driving * Two wide steel tread belts and two nylon tread cap plies for superior handling characteristics * Steel sidewall inserts reinforce the sidewall for extreme lateral acceleration * Jointless tread cap plies and jointless wound bead wires improve tire uniformity and provide a smooth, comfortable ride * Unidirectional tread pattern allows for high speed and excellent braking response * Unique construction and tread pattern improve rigidity, uniform contact, and wear resistance * Spiral wound, jointless bead wire construction assures strength for stable performance at high speeds * Rim guard designed to protect against wheel damage
( 101 )
$283.00
System 1 Spin-On Oil Filters
System 1 has eliminated the need for disposable oil filters. Built from durable anodized aluminum housing, System 1 filters feature a washable, stainless steel element that can be used over and over again. They can be completely disassembled for inspection, revealing metal shavings and residue that could indicate engine wear or damage. System 1 oil filters are perfect for daily drivers, fleet vehicles, and race and marine applications.
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$257.00
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$304.00
On Sale
XS Power XV Automotive Series Lithium Batteries
XS Power XV Automotive Series lithium batteries are lightweight, powerful, and offer five times the life over lead acid and AGM batteries. These Lithium Titanate batteries are available for automotive applications in many common BCI group sizes for a direct fit in your vehicle.
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$499.99
$449.99
Go Fast Bits G-Force III Electronic Boost Controllers
The G-Force III is the latest iteration of Go Fast Bits' feature-packed electronic boost controller—now with the ability to monitor and display your engine's air/fuel ratio in either Lambda or AFR. By connecting the analog output of most wideband oxygen controllers (i.e. Innovate LC-2, AEM UEGO etc.; sold separately) to the G-Force III's auxiliary input, you can toggle between boost pressure and air/fuel ratio display. This saves you from having to install a separate AFR gauge in your car, and it can also save your engine! A lean mixture at high boost can destroy an engine in seconds, and a stand-alone AFR gauge is next to useless when accelerating hard, as your concentration is likely to be on the road in front of you. The G-Force III safeguards your engine against a lean mixture by lowering boost to the minimum setting, and visibly warning you by flashing the display lighting. Whether your car is a daily driver or an all-out track weapon, the G-Force III has the features to tailor boost to suit your needs. Set up to six boost presets and select on the fly; use the scramble feature for overtaking, launching, towing, or protecting the engine—and you can even customize the lighting color to suit your interior! No other EBC on the market offers the features, control, ease of use, and value for money like the G-Force III! Additional G-Force III electronic boost controller details: * For boost pressures up to 50 psi (3.45 bar, 345 KPA) * Adjust peak boost, rise rate, and closed loop correction. * Display boost pressure in PSI, BAR, or KPA * 6 Boost presets, individually programmable * Unique "scramble" feature with remote switching * Peak boost recall * Air/fuel ratio display in AFR or Lambda (when connected to a wideband oxygen controller) * Separately adjustable overboost and lean mixture warning/boost cut * Touch buttons with user selectable illumination colors * Auxiliary input to switch boost presets or activate scramble * 1/2 DIN size casing, fits standard stereo slot * Supplied with MAC 3-port solenoid
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$412.65
Toyo Proxes R888R Tires
Toyo Proxes R888R DOT competition tires are evolutions of the race-winning Proxes R888, delivering even faster lap times and better dry handling. The credit goes to a new tread design and an improved contact patch that puts more rubber on the track. Racers will also appreciate the predictable handling and how quickly Proxes R888R tires reach optimal operating temperature. Features: * High-grip race compound reaches optimal operating temperature quickly, providing consistant performance and improved grip for excellent cornering * Optimized contact patch improves dry traction in braking, cornering, and acceleration * Large tread blocks on outside tread maximizes lateral grip * Wide center rib improves directional stability and precise steering * Water evacuation channel assists with wet traction
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$320.54
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$323.27
Nitto NT05 Tires
Nitto NT05 tires are maximum performance tires that were developed using advanced computer simulation and extensive on-track testing. These development methods, along with rigorous quality standards, helped to produce street tires that provide precise and responsive handling and performance. They're available in a wide range of sizes for fitment on vehicles from the 1980s and up.
( 38 )
$251.00
Vitour Tempesta P1 P-01R Tires
Ideal for racers and performance-oriented street drivers alike, the Vitour Tempesta P1 P-01R tires promise an unparalleled driving experience. The Tempesta P1 P-01R's exceed expectations in every way and have received overwhelmingly positive reviews from users. The consensus aligns with Vitour's development findings—the P1 P-01R offers grip levels as good as or better than the competition, maintaining consistency throughout its lifecycle. The Tempesta P1 P-01R's handle heat exceptionally well and, on a well-set-up car, outlasts most competitors. Many users report improved performance as the tread wears down, transforming into a semi-slick with ample rubber left for consistently fast lap times. Whether on a lightweight Miata or a heavyweight Tesla, the Vitour Tempesta P1 P-01R tires stand as the pinnacle of UHP 200TW performance. Run 'em and experience the thrill! Key features and benefits: * The latest 200TW performance tire to hit the market offering uncompromising performance, price, and longevity * The P1 P-01R tires are unmatched in their category, offering the fastest lap times along with superior wear and heat tolerance characteristics when compared to the competition * Excellent choice for a streetable racing tire * Designed to excel in time attack and time trials, road racing, and autocross competition while also being able to drive you to and from the track * Vitour Tempesta P1 P-01R tires are being used by racers in SCCA, Gridlife, and Ultimate Streetcar events all over the country * The Tempesta P1 P-01R tires are setting set track records and are built to put its racers on the podium
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$256.00
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$382.00
On Sale
Royal Purple Max ATF Transmission Fluid
Royal Purple Max ATF transmission fluid is a synthetic, high-performance, long life, multipurpose automatic transmission fluid suitable for use in many of today's vehicles. Max ATF is more oxidation-stable than other transmission fluids, and greatly resists breakdown from heat and loss of proper lubricity. It is fully compatible and can be mixed with other automatic transmission fluids; however, for the best results, drain or flush your current oil and then fill with Royal Purple Max ATF.
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$280.99
$252.89
PowerStop Z23 Evolution Sport Brake Upgrade Kits
PowerStop is on a mission to deliver an easy and affordable way for any driver to upgrade their brakes--no matter where or how they use their vehicle. Forget standard, off-the-shelf parts. PowerStop's Z23 Evolution Sport brake upgrade kits come with everything you need--pads, rotors, and premium stainless steel hardware for an easy, bolt-on upgrade for your daily-driver. Along with increased braking power, the carbon fiber ceramic brake pads feature a low-dust formula to keep those wheels looking great while you say goodbye to nasty brake dust. These pads combine with drilled and slotted rotors to ensure a cool, smooth ride that protects against rust and corrosion. Give your daily driver the easy and affordable performance upgrade it deserves with PowerStop Z23 Evolution Sport brake upgrade kits.
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$256.99
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$485.67
Turbosmart Kompact Dual Port Blow-Off Valves
Turbosmart Kompact dual port blow-off valves offer high performance, OEM fitment, versatility, and affordability—in other words, everything you need! These BOVs feature dual ports that vent into both the atmosphere and the air intake, reducing turbo lag and eliminating cavitation. Turbosmart Kompact dual port blow-off valves are designed to be bolt-on replacements for plastic factory Bosch or Denso units. They use sequential timing to allow for quieter operation during normal driving, while still providing the benefits of a vent-to-atmosphere type BOV under race conditions. They are easily converted into full atmospheric or full bypass units by using the included port blanking plug.
( 28 )
$315.89
Braille Battery Endurance Series Batteries
Braille Battery Endurance batteries are quality-built from recycled lead and plastic, equaling a lower cost for you and a benefit for the environment. Technically registered as a "sealed valve regulated" design, their patented AGM technology completely eliminates corrosion on terminals. They're environmentally safe and do not need filling or maintenance. These batteries are available in popular Group 34, Group 48, and Group 49 sizes. They offer direct replacement installation with exclusive performance features that benefit anyone looking to upgrade their vehicle's electrical system for better operation and safety.
Not Yet Reviewed
$299.99
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$446.99
Manufacturer Rebate
BFGoodrich g-Force Rival + Tires
BFGoodrich g-Force Rival+ tires are extreme performance summer tires that live in the Endurance 200 Treadwear Category, with predictable handling, track day endurance, and consistent lap times. Built for dependable grip and consistently fast times, these tires are an excellent choice for long-lasting performance in entry-level endurance racing. * Wet grip that shines despite the rain * Designed to reduce or eliminate tire changes without sacrificing performance during the driving stint * Highly predictable grip at extreme levels * Delivers faster lap times in wet conditions than a leading competitor * Radial blackwalls are available in more than a dozen sizes
Not Yet Reviewed
$279.00
Summit Bucks
Nitto INVO Tires
Nitto INVO tires refuse to compromise on ultra-high performance, ride refinement, or quality. State-of-the-art computer engineering and digital audio testing equipment produced the INVO tread pattern. These tires reduce perceived road noise, provide excellent comfort, and deliver exceptional traction in both wet and dry conditions. Order the size needed for your vehicle application.
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$262.00
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$318.00
APR PEX Intake Systems
APR PEX intake systems are attractive high-performance upgrades designed to increase performance by letting the engine breathe more freely. Their closed airbox design rejects power-robbing heat from the engine bay thanks to the high-heat deflection material used, and it provides an unrestrictive path for cold, dense air fed from outside of the engine bay to maximize power. A high-flow, reusable filter provides excellent filtration without the restrictions, which keeps the engine clean while optimizing power delivery. APR PEX intake systems recorded a 31 percent cfm improvement over the factory airbox, which translates into a sharper throttle response, lessened strain on the turbocharger, and more horsepower and torque. Offering an excellent value, PEX systems install in minutes, looks fantastic, deliver a sporty engine note, and is recommended at all stages of performance.
Not Yet Reviewed
$460.95
APR A01 Flow-Formed Gunmetal Wheels
APR A01 flow-formed gunmetal wheels are manufactured using the latest strengthening and weight savings techniques to provide an attractive solution ready for the street and track. These race-inspired wheel designs feature a curved 5-spoke "Y" with deep outer rim inlay and weight-saving spoke pockets. They feature a durable, gunmetal finish that will complement most any ride. APR A01 flow-formed gunmetal wheels offer performance, style, and strength at an affordable price. Additional features: * Flow-formed aluminum for an extreme weight to strength ratio * Billet aluminum; wobble free, interlocking hub-centric design * DOT, VIA, and JWL certified. Additionally 19 x 8.5 in. are TÜV Approved and 100 percent x-ray inspected * Compatible with OEM-style and length ball seat lug bolts * Anti-slip machining feature to help prevent tire-to-wheel rotation * Finite Element Analysis (FEA) designed to minimize weight, yet retain a 700 kg load rating
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$357.95
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$434.95
PowerStop Z23 Evolution Sport GEOMET Coated Brake Kits
PowerStop is on a mission to deliver an easy and affordable way for any driver to upgrade their brakes--no matter where or how they use their vehicle. PowerStop Z23 Evolution GEOMET coated rotor brake kits include Z23 brake pads, rotors, and stainless steel hardware; everything needed for an affordable, easy brake upgrade for drivers with European vehicles. The carbon fiber ceramic brake pads feature a low-dust formula to keep those wheels looking great while you say goodbye to nasty brake dust. These pads also have multi-layer rubberized shims that insulate noise for virtually silent braking. The high-carbon rotors are treated with a thin layer of genuine GEOMET 360 coating to protect against rust and corrosion without diminishing braking performance and are manufactured to original equipment specifications. If you're looking to refresh the look and braking performance for your European vehicle, Evolution GEOMET coated rotor brake kits are for you.
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$256.88
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$457.57
SPC Performance Control Arms
Adjust camber and caster for maximum handling and performance with these control arms by SPC Performance. These control arms allow for changes when fine-tuning suspension alignment angles. They're available for a wide variety of applications, such as street rods, sport compact, muscle cars, performance vehicles, and race cars. Fine tune your suspension with SPC Performance control arms.
( 162 )
$449.96
Nankang Sportnex CR-S Tires
Nankang Sportnex CR-S semi-slick competition tires are radial blackwalls designed for warm weather performance. Equip your race car with Sportnex CR-S tires and roll to the Winner's Circle!
Not Yet Reviewed
$315.99
