Home/Audi, A6, Allroad, S4, Passenger Car Turbos, Performance/DZX-274 B5 Audi S4 / A6 / Allroad 2.7T Twin Turbo Stage 4 700whp Upgrade Turbocharger Set

DZX-274 B5 Audi S4 / A6 / Allroad 2.7T Twin Turbo Stage 4 700whp Upgrade Turbocharger Set


American-Built Brand New!

DZX-274 B5 Audi S4 / A6 / Allroad 2.7T Twin Turbo Stage 4 700whp Upgrade Turbocharger Set



Due to popular demand we’re releasing OUR version of a max-output, RS6 housing-based 2.7T upgrade turbo set. The absolute biggest wheels can possibly fit into these housings with Turbo Concepts proven DZX rotating assembly, featuring our quick spooling DZ6 turbine and high-output, silky-smooth DZX compressor, but stage 4 comes with the biggest ever 67mm compressor that pushes 40 lbs./min., set is capable of creating 600whp on pump gas / 700whp on e85.

Hand-built by a master turbo tech in the USA, hand-picked components from the best available vendors, custom DZ6 9-blade turbine made from OE-spec 713C inconel turbines by an OEM turbine manufacturer, calibrated .8bar upgrade actuators, hi-temp silicon molybdenum ductile steel turbine housings, and custom 11-blade TCX billet compressors. Largest wheels possible in bolt-on configuration.

Reaches full boost around 3400 RPM with solid torque response and amazing high-end power.

WARNING this turbo might not be for you. Your 2.7 car will need every upgrade there is to take advantage of these upgrade turbos and built motor is highly-recommended. “This upgrade is for off-road and track use only!” You’ve been warned.

Bolt-on installation, required upgrades: Tuning software, 550cc min fuel injectors, larger MAF housing, upgrade downpipes, and 54mm silicon turbo intake hoses.

• 100% built and balanced in our Michigan facility.
• Free telephone support from our experienced installers and turbo experts.
• Each component is checked for exact specification, proper material, and heat treatment.
• Upgraded internals are integrated to improve oil flow and thrust handling.
• Other guys say “Each component meets or exceeds OEM specification” but ours really do!
Call our toll-free line to order if: 1) You require express air delivery. 2) You are not 100% sure this is the correct unit for your vehicle. 3) You are outside the lower 48 states, USA. 4) You are not sure why your turbo failed and our technical support will help you diagnose the cause of failure to ensure the successful installation of your replacement unit


30700N 53049700025 5304 970 0025 53049700026 5304 970 0026 k04-025 k04-026 rs4 rs6 k24

Additional information


S4, A6, Allroad


2000, 2001, 2002, 2003, 2004, 2005


Manual, Automatic