Europe’s greatest drivers know the formula: freer breathing, smarter flow, and calibration that turns every squeeze of the throttle into goosebumps. APR’s newest hardware launches deliver exactly that—two all-new cat-backs for Audi RS legends, a forged-carbon intake for the 4.0T V8 SUV family, and an OEM+ turbo system that lets a MK8 GTI punch far above its weight.

Uncorking the B9 RS4/RS5: Sound + Flow Without the Drone

APR’s new B9 Audi RS4/RS5 cat-back brings big-lungs swagger with unmistakable RS character. The complete catalyst-back system runs from the factory cat to the tips, using dual 2.75-inch downpipes merged into a 3.5-inch mid-pipe before exiting through quad 2.5-inch outlets for serious flow gains. The result is a bold, aggressive exhaust note, along with dyno-proven increases of +9 HP and +15 FT-LBS at all four wheels. Valve-controlled rear mufflers keep things composed during cruising and ferocious at full throttle, while an integrated Helmholtz resonator eliminates drone without muting tone. The system includes an upgraded tunnel brace to clear the larger tubing, and finishes with diamond-black RS-style oval tips measuring 7.25 x 5 inches.

Waking Up the C8 Audi RS6/RS7: Autobahn Aggression, Commuter Manners

The new C8 RS6/RS7 cat-back strikes the perfect balance between Autobahn aggression and daily-driver refinement. Built around a dual 3-inch (76 mm) straight-through path, the system flows wide open with the valves up, then routes through a calmer 2.5-inch path when closed—perfect for sneaking home late at night. A multi-chamber rear muffler and Helmholtz resonator cancel drone while preserving signature APR richness, and the oversized 8.23 x 4.76-inch RS-style diamond-black tips complete the upscale aesthetic. Gains come in at +9 HP and +16 FT-LBS to all four wheels with unmistakable APR presence.

EA825 4.0T V8: Forged Carbon Meets Big-Air Engineering

Designed for the high-performance 4.0T SUV family—including Audi SQ7/SQ8/RS Q8, Bentley Bentayga, Lamborghini Urus, and Porsche Cayenne—APR’s new forged-carbon intake sets a new bar for airflow and durability. This single-body plenum uses matte forged carbon construction, a flow-bench-optimized filter, and billet bell-mouth turbo inlets to reduce pressure drop and improve response. The full system flows up to 22% more than stock, while the performance filter alone adds up to 12% more flow at equal pressure. Integrated PCV and EVAP bungs (with new EVAP jet pumps) ensure OEM-grade functionality, and the design is compatible with both early-model and late-model PCV system revisions.

MK8 GTI Stage 3 OEM Turbo System: R-Rivaling Power with OEM+ Drivability

APR’s MK8 GTI (EA888.4 LK2) Stage 3 OEM Turbo System brings factory precision to big-power GTI performance. Using the OEM Continental turbocharger from the EA888.4 LK3 platform—shared with the Golf R and S3—APR pairs the hardware with proprietary install components and Stage 3 ECU software for seamless drivability and serious output. Expect 410–478 HP and 400–443 FT-LBS depending on fuel, with E85 gains hitting an astonishing +142–211 WHP and +119–179 WTQ. Many setups work on stock fueling and exhaust when paired with an APR intake and intercooler. Multiple octane files are included, with high- and low-torque variants for DSG or 6MT.

What Makes This Wave of APR Hardware Hit Harder

APR engineered these upgrades around four pillars: sound, flow, materials, and OEM+ integration. The cat-backs use Helmholtz technology to cancel unwanted frequencies while delivering a muscular tone under throttle and calmness at cruise. Large-diameter tubing, straight-through architectures, and optimized merges reduce restriction, with the RS6/RS7 system maintaining a fully unbroken open path. Premium construction—including T304 stainless, TIG welds, forged carbon, billet inlets, and precision brackets—ensures longevity no matter the platform. Finally, everything integrates like factory equipment: exhaust valve control, EVAP/PCV solutions, and OEM-based turbo hardware with APR calibration for stock-like manners.

From chasing sub-8-second 0–60 runs in a wagon full of groceries, to sharpening the presence of a daily-driven RS, to giving a twin-turbo V8 SUV the lungs it deserves, to turning a GTI into a giant-killer—APR’s latest hardware delivers precise, refined, wickedly quick performance. Ready to make your move? Drop your fitment and goals, and I’ll recommend the ideal parts, fuel files, and supporting mods for a flawless install and a killer first-start soundtrack.