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SLR Biturbo System
Purchase SLR Biturbo System
  • SKU: 01-155-01030-6

    SLR Biturbo System

  • Gains are at the engine or "crank". Actual gains are dependent on the model, model year, fuel octane, engine health, and environmental conditions. Learn More

  • $43,999.99

  • Prop 65 warning

    This product can expose you to chemicals including carbon black, silica - crystalline, formaldehyde, and lead which are known to the State of California to cause cancer, and lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

Weistec Horsepower 1073
Weistec Torque 953
Turbo Type W.4 (Complete Replacement)
Manufacturer Weistec
Street legal in all the US States No
Stock Horsepower 617
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year make model trim engine
2013 Mercedes-Benz SLR McLaren Edition (C199) Supercharged 5.5L V8 (M155)
2012 Mercedes-Benz SLR McLaren Edition (C199) Supercharged 5.5L V8 (M155)
2011 Mercedes-Benz SLR McLaren Edition (C199) Supercharged 5.5L V8 (M155)
2010 Mercedes-Benz SLR McLaren Edition (C199) Supercharged 5.5L V8 (M155)
2010 Mercedes-Benz SLR Base (C199) Supercharged 5.5L V8 (M155)
2009 Mercedes-Benz SLR Stirling Moss (C199) Supercharged 5.5L V8 (M155)
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Weistec SLR BiTurbo System

The SLR is one of the most unique and exclusive vehicles Mercedes has produced in recent times.  Through meticulous engineering and testing, Weistec Engineering, the leader in Mercedes aftermarket performance, has created a system that cannot be matched.  We at Weistec understood and respected the rich history of the SLR and only sought out to enhance the supercars driving experience.

Our top engineers have spent a substantial number of hours designing and developing the most powerful SLR system on the planet.  The goal was simple; a complete system providing consistent and usable power without sacrifice.  The factory supercharger system is replaced with a massive water to air intercooler, which works in conjunction with the factory SLR intercoolers, to provide maximum cooling and ensure consistency in power.  Only the highest quality materials and over 800 individual components were used to create the Weistec SLR BiTurbo System, including Inconel Steel, Stainless Steel, and Aircraft Grade Aluminum.  To ensure longevity and the highest performance possible, Ball Bearing Turbochargers with Billet Compressor Wheels are standard.

Watch the film to see the creation of our inspiration and design come to life with the unbelievable power gains given by Weistec.


Weistec Engineering SLR BiTurbo System

 *Product may not be emissions compliant.  Check local laws prior to installation.

Key Features:

  • 730+ Wheel Horsepower (860 BHP) on 91 Octane Fuel

  • 900+ Wheel Horsepower (1050 BHP) on MS109 Fuel with Supporting Upgrades

  • Twin Ball Bearing Turbochargers

  • CNC Billet Compressor Wheels

  • Dual External Wastegates

  • Dual Weistec Anti Surge Valves

  • Aircraft Grade Aluminum Components

  • Weistec Water to Air Intercooler Replaces Factory Supercharger

  • 82mm Throttle Body

  • Cast Inconel Steel Turbo Manifolds

  • Stainless Steel Downpipes

  • Stainless Steel Hardware

  • Retains Factory SLR Airbox

  • Electronically Controlled Boost