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XS-POWER
K04-025 & K04-026 BILLET Twin Turbocharger Set
Audi RS4 B5 2.7T V6 • Billet Compressor Wheels • Stage 3 Direct-Replacement Upgrade
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| IMPORTANT: This listing is for ONE COMPLETE SET OF TWO BILLET TURBOCHARGERS ONLY. Turbo inlet pipes, oil lines, coolant lines, gaskets, hardware and installation kits are NOT INCLUDED. |
| PRODUCT OVERVIEW |
| Upgrade your Audi RS4 B5 2.7T with the latest XS-POWER K04-025 and K04-026 Billet Twin Turbocharger Set. These turbochargers feature upgraded CNC-machined billet compressor wheels designed to provide improved compressor strength, airflow capability, boost response and performance compared with conventional cast-wheel configurations. Designed in a direct-replacement K04 configuration, these turbochargers install in the original Audi RS4 turbocharger locations without requiring custom fabrication. Each turbocharger uses a heavy-duty 360-degree thrust bearing system engineered to improve durability during repeated high-boost operation. Adjustable wastegate actuators are preset to approximately 9 PSI, while the oversized and ported wastegate openings and enlarged flappers are designed to improve boost control and help reduce the possibility of boost creep. This is an excellent turbocharger upgrade for Audi 2.7T owners building a responsive Stage 3 street, touring or performance setup with upgraded fueling, intercooling, exhaust and professional ECU calibration. |
| CNC-MACHINED BILLET COMPRESSOR WHEELS |
| Unlike standard cast compressor wheels, these XS-POWER K04 turbochargers feature upgraded billet compressor wheels designed for improved strength, reduced rotating mass, responsive spool characteristics and increased airflow potential. |
| FEATURES | |
| ✔ Brand-new K04-025 and K04-026 turbocharger pair ✔ CNC-machined billet compressor wheels ✔ Improved compressor strength and efficiency ✔ Faster boost response and improved spool characteristics ✔ Direct-replacement mounting configuration ✔ Heavy-duty 360-degree thrust bearings |
✔ Adjustable wastegate actuators ✔ Wastegates preset to approximately 9 PSI ✔ Oversized wastegate openings and flappers ✔ Ported wastegate passages for improved flow ✔ Supports approximately 425+ HP on properly supported setups* ✔ One-year limited warranty |
| VEHICLE FITMENT |
| Designed For: ✔ 2000-2001 Audi RS4 B5 2.7L Twin-Turbo V6 Audi Reference Part Numbers:
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| TECHNICAL SPECIFICATIONS | |
| Turbocharger Models | K04-025 and K04-026 |
| Compressor Wheel | CNC-Machined Billet Compressor Wheel |
| Configuration | Twin Turbocharger Set |
| Thrust Bearing | Heavy-Duty 360-Degree Thrust Bearing |
| Wastegate Actuators | Adjustable, Preset to Approximately 9 PSI |
| Wastegate Design | Oversized and Ported Openings with Enlarged Flappers |
| Estimated Power Capability | Approximately 425+ HP on Properly Supported 93-Octane Setups* |
| Warranty | One-Year Limited Warranty |
| PERFORMANCE BENEFITS |
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| RECOMMENDED SUPPORTING MODIFICATIONS |
For maximum reliability and performance, XS-POWER strongly recommends:
XS-POWER also offers compatible intercoolers, RS6-style components, diverter valves, downpipes, inlet components and additional Audi 2.7T performance parts. |
| PACKAGE INCLUDES |
| ✔ One XS-POWER K04-025 Billet Turbocharger ✔ One XS-POWER K04-026 Billet Turbocharger ✔ Preinstalled Adjustable Wastegate Actuators NOT INCLUDED: Turbo inlet pipes, oil lines, coolant lines, gaskets, mounting hardware, installation kits, intercoolers, downpipes, diverter valves or ECU tuning.
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| INSTALLATION & WARRANTY NOTICE |
| Professional installation by a qualified Audi or European performance technician is strongly recommended. The engine lubrication system, oil lines, coolant lines, intake system, intercoolers and exhaust system must be inspected before installation. Turbochargers must be properly primed with clean engine oil before the engine is started. Warranty coverage may be affected by improper installation, oil starvation, contaminated oil, foreign-object damage, incorrect tuning, excessive exhaust-gas temperature, uncontrolled boost, improper wastegate adjustment or failure to correct the original cause of turbocharger failure. |
| WORLDWIDE PERFORMANCE PARTS SHIPPING |
| XS-POWER proudly serves Audi enthusiasts, tuners and performance shops worldwide. International customers are responsible for any applicable customs duties, import taxes, VAT and brokerage charges. |
| *Horsepower capability is an estimate and is not guaranteed. Actual performance depends on engine condition, fuel quality, tuning, boost pressure, intercooling, exhaust flow, elevation, supporting modifications and installation quality. Performance components may not be legal for use on emissions-controlled public-road vehicles in every country or region. Buyer is responsible for verifying all local laws and regulations before purchase or installation. |
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XS-POWER
Performance Turbochargers • Exhaust Systems • Intercoolers • Fabrication Components
Built for enthusiasts. Shipped worldwide.
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