CTS Turbo is proud to announce our Stage 1 turbocharger upgrade for 4.0T Audi C7 A8/S6/S7/S8/RS6/RS7 \n \nThese are a direct replacement for A8/S6/S7/S8/RS6/RS7 turbos. These have OEM fit to your factory turbine housing and exhaust manifold. Our turbocharger upgrade features a larger compressor wheel giving your 4.0T a power capability of 780+ horsepower \n \nNote: All TSB parts for turbo replacement have to be installed; otherwise warranty will not be applicable. Proof will be required. \n \nNO CORE CHARGE, THESE ARE BRAND NEW TURBOCHARGERS. \n \nFeatures: \n

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• Billet compressor wheels, 48.6mm inducer, 60mm-62.3mm exducer with extended tip (9 blade configuration)
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• OEM RS7 turbine wheel
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• Bolt-on fitment with existing exhaust manifolds
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• Perfect upgrade for all 4.0T
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\nFitment: \n

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• Audi C7 S6 4.0T
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• Audi C7 S7 4.0T
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• Audi D4 A8 4.0T
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• Audi C7 RS6 4.0T
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• Audi C7 RS7  4.0T
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• Audi D4 S8 4.0T
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\n**High-flow intakes, inlets and exhaust and upgraded cooling system are recommended. Custom tuning is required.