AUDI S3 | Summit Racing

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APR Cat-Back Exhaust Systems

APR cat-back exhaust systems personalize your vehicle's looks, sound, and performance. Beautifully hand-crafted T304 stainless steel components adorn the system, with stunning TIG welding throughout. The straight-though brushed finish mufflers smooth the exhaust note to a deep growl, without adding restrictions, while the Helmholz resonator reduces unwanted frequencies. Strong high-quality bracketry and OE-style clamps hold the system steadily in place, making the install or removal a snap—and fitment simple, yet precise. Additional details: * Low-profile design, suitable for lowered vehicles * Larger diameter piping and tips, compared to stock * No increase in weight, compared to stock * Limited lifetime warranty

Not Yet Reviewed

$2,766.95

Borla S-Type Cat-Back Exhaust Systems

Borla S-type cat-back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower and produce a more aggressive sound and higher flow. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium 300-Series austenitic stainless steel, superior to T-400 Series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow and power, and precision computer-controlled CNC manufacturing ensures an accurate fit. It's just what you'd expect from the world's most experienced (and most winning) exhaust brand.

4.79 out of 5 stars ( 940 )

$2,224.99

South Bend Clutch Stage 3 Daily Driver Clutch Kits

South Bend Clutch Stage 3 Daily Driver clutch kits are recommended for single mass flywheel (SMF), when original design is dual mass flywheel (DMF). These clutch packages are designed for high-horsepower vehicles desiring a start performance similar to OE. The pressure plate is race engineered (SS) and SFI-approved with significant load increase over stage 1 and 2 pressure plates (+600-800 lbs.). Expect a pedal effort increase of 20 to 25 percent. Discs are assembled with heat-treated wear-resistant hubs, as well as drive plates and springs for high-load transfer and dependable operation. The sprung centers on the disc, in conjunction with the marcel fin between the linings, create a dual dampening effect that simulates OE start performance. A performance organic friction material with a high metal content increases torque and rpm capability—and maintains low operating temperatures, which reduce wear and glazing. South Bend Clutch Stage 3 Daily Driver clutch kits are the perfect match for your high performance street machine and occasional track use. Order the kit recommended for your application.

Not Yet Reviewed

$2,010.64

South Bend Clutch Stage 4 X-Series Clutch Kits

South Bend Clutch Stage 4 X-Series clutch kits are build-to-order clutch packages for vehicles modified to exceed Stage 3 hp parameters. The kits include a steel, single mass, SFI-approved flywheel for safety. The race-engineered pressure plate is modified for maximum plate load, and helps to deliver more transmittable torque, stability, extended life, and superior thermal resistance. The South Bend Clutch Stage 4 X-Series clutch kits provide noticeably better dynamics through higher clamp loads, when driving your vehicle to its limits. Order the Stage 4 X-Series clutch kit recommended for your specific vehicle and engine size. Features, items, and specs include: * Puck-style disc offered in sprung and un-sprung options * Graphite-impregnated ceramic or sintered iron friction material options * Torque ratings calculated at time of ordering * Engagement characteristics can be abrupt * Meticulous processing and advanced packaging materials

Not Yet Reviewed

$2,211.69

APR DTR6054 Turbocharger Systems

APR DTR6054 turbocharger systems are direct replacements for the EA888 Gen 3 engine. These upgrades include matching software for various vehicles and mods, providing up to 491 hp and 425 lbs.-ft. of torque, depending on vehicle platform and fueling, all while keeping emissions components unmodified. The software supports premium pump fuel grades, race fuel grades, and even ethanol on the Golf R, S3, and TT S platform with fueling upgrades. For dedicated race cars the turbocharger is designed with plenty of headroom to go even further on your own! Designed and developed from the ground up by APR, DTR6054 turbochargers do not require a core and there's no additional downtime. They are built using an aluminum anti-surge compressor cover with appropriate A/R matched to a larger aircraft-grade, 6061 billet aluminum 60mm compressor wheel, a turbine housing cast with high-temperature 310 stainless steel to take the heat and abuse seen on a road course, and a nickel-based superalloy K418 high-flow 54mm turbine wheel. A German dual ceramic ball bearing center section provides smooth and reliable operation with a better transient response, eliminating the factory failure-prone journal bearing design. Each kit includes the complete turbocharger with compressor inlet pipe, compressor outlet hose, T-bolt clamps, gaskets, O-rings, exhaust ring, exhaust V-band, exhaust manifold gasket, studs, bolts, and washers, oil and coolant line O-rings, and APR's ECU upgrades for select vehicles. The upgrade uses your factory electronic wastegate and diverter valve, and connects to your factory exhaust, intake, turbo outlet pipe, and oil and coolant lines. Tested at various road courses, APR's DTR6054 turbocharger systems do not spike torque hard or run on the edge of what the factory rods and pistons have been known to handle, making them as safe on the stock engine as possible for these power levels. Additional features: * Over 30 percent compressor flow compared to the factory turbocharger * Various software levels depending on fueling modifications, including stock fueling * Supports 91, 93, 100, and 104 AKI in all configurations * Supports E60-E85 with fueling upgrades (Golf R/S3/TT S platform only) * VSR balanced turbocharger center housing rotating assembly (CHRA) for reliable operation * Oversized cast turbo inlet pipe connects directly to factory or upgraded intake system * Machined turbocharger speed sensor port with included billet block-off plug * Silicone discharge hose with APR EZ-flow stepped lips included (no turbo muffler) * Integrated diverter valve (DV) port * Available in turbo kit only, turbo kit with low- and high-pressure fuel pump, or turbo kit with low- and high-pressure fuel pump and multi-port injection

Not Yet Reviewed

$2,151.95

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$4,816.95

South Bend Clutch Stage 3 Drag Race Clutch Kits

South Bend Clutch Stage 3 drag race clutch kits are powerfully built with heavily modified vehicles in mind—particularly those built for 1/4 and 1/8 mile tracks. They include a single mass SFI-approved flywheel with each kit, which is typically required for drag racing when the original design is dual mass. The pressure plate is race cover engineered to keep the clutch pedal travel short and quick. South Bend Clutch Stage 3 drag race clutch kits are recommended for drag racing, pulling, and drifting. Order the clutch kit recommended for your specific vehicle and engine size. Features, items, and specs include: * Puck-style disc reduces rotational mass and is assembled with all high-carbon components for maximum strength * Graphite-impregnated ceramic friction material perfectly suited for drag racing (maximum friction co-efficient, rapid heat dissipation, and abrupt engagement characteristics) * Meticulous processing and advanced packaging materials

Not Yet Reviewed

$2,211.69

KW Variant 1 Coilover Kits

KW Variant 1 coilover kits are optimally adjusted for sporty driving, comfort, and safety. They enable you to drop your ride's center of gravity and customize the height at all four corners. KW Variant 1 twin tube coilover kits are designed with shorter INOX-Line stainless steel strut housings for more spring travel, anodized aluminum spring collars for durability, and high-tensile racing springs for strong support and comfort. Order the model with options recommended for your vehicle.

5.0 out of 5 stars ( 1 )

$2,184.00

AWE Tuning SwitchPath Edition Exhaust Systems

AWE Tuning SwitchPath Edition exhaust systems are available in a wide range of options to complement your particular vehicle. An unmatched piece of performance engineering, these systems unlock the perfect combination of exhaust tone, sound volume and practicality. SwitchPath incorporates a proprietary mechanical valve system that controls sound volume—from civilized to aggressive. Besides the incredible sound, drivers have experienced double-digit gains in both horsepower and torque. The cat-back or rear axle-back systems feature mandrel-bent .065 in. wall 304 stainless steel construction, with a variety of chambered/valved muffler, inlet/outlet, and tip choices. Examine the options available for your vehicle. Additional product details: * Minimal bends, maximum flow, push-button attitude * Tip options include 102mm double-walled, slash-cut tips in chrome silver or diamond black * Most models utilize factory valving * Precision-engineered X-pipe to unlock clean, epic tone * When the valves are closed, SwitchPath produces a refined aggressive howl while remaining full-bodied and powerful; no congested, metallic sounds when on the throttle. At cruising speeds, interior acoustics are close to stock. * SwitchPath design allows driver to select volume * In-cabin remote toggle * Application-specific to guarantee perfect fitment

Not Yet Reviewed

$2,165.00

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$2,270.00

KW Variant 2 Coilover Kits

Lowering and fine-tuning a vehicle system to suit your needs means using KW Variant 2 coilover kits to do it right. These coilover systems employ the highest quality materials for long life—and enable you to adjust vehicle height and rebound damping according to your specifications. Variant 2 coilover kits include shorter stainless steel strut housings, high-quality yellow springs, purple anodized aluminum spring collars, and elastomer bump stops with an integrated dust protection system. Over a hundred models are available, for fitment on vehicles from 1948 and up.

Not Yet Reviewed

$2,424.00

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$2,724.00

KW Variant 3 Coilover Kits

Variant 3 coilover kits from KW Suspensions feature state-of-the-art technology to customize your ride's stance and look sharp. These coilover systems are designed with shorter INOX-Line stainless steel strut housings for more spring travel, anodized aluminum spring collars for durability, and high-tensile racing springs for strong support and comfort. Their separate and independent compression and rebound damping options allow for a truly individual driving setup. Order the kit recommended for your vehicle.

Not Yet Reviewed

$3,094.00

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$3,394.00

DDC ECU Coilover Kits

The adaptive KW DDC ECU coilover kits allow for adjustments within the tested lowering range of your vehicle. The dirt-resistant trapezoid thread and composite collar provide years of accessible adjustability and ease of use. Lowering can be done via the composite spring collar on the shock body or on the height adjustable rear perch in the rear of the vehicle. No matter where in the world they are, sporty drivers, car manufacturers and refiners rely on the KW technology found in DDC ECU Coilover Kits. More product features include: * Composite spring seats (perches) made from a wear-resistant and friction-optimized polyamide composite material that prevents oxidation with a stainless steel insert for maximum strength * Friction-optimized, trapezoid threads that are insensitive to dirt, require less force to adjust, and provide a higher load-bearing capacity due to a larger cross-section * Rust-proof stainless steel with Inox-Line coatings that will not wear off while adjusting * The technical component report is always included in the package and outlines the guidelines for lowering the suspension of the respective vehicle * The DDC ECU coilover suspension app (free download in Apple and Google Play stores) allows a choice of three defined damper setups: Comfort, Sport, or Sport+, and also allows for complete individual customization of the adaptive dampers settings during operation

Not Yet Reviewed

$4,834.00

AUDI S3 Parts and Accessories