Mercedes SLS AMG (2011-2014) – RENNtech Performance Package – Stage 3





RENNtech’s SLS performance package stage 3 features their proprietary ECU tuning software and long tube manifolds as found in stages 1 & 2 with the addition of the Akrapovic full titanium exhaust system for the SLS. This package combines incredible performance with substantial weight savings and creates a truly exotic sound.

The Akrapovic Evolution system for the Mercedes SLS not only produces stand alone gains of 15 hp, but reduces weight by an incredible 45 lbs over the stock system! Soundwise, the system brings out the true character of the car featuring muffler bypass valves and Akrapovic wireless kit included with the system.

RENNtech’s long tube manifolds are designed and manufactured in house and feature high quality, tri-metal, 200 cell sport catalytic cells which are ceramic coated to reduce heat in the engine compartment as well as combat against thermal stress.

The combination of RENNtech performance and the fierce sound of their long tube manifolds coupled with the Akrapovic exhaust system truly create the ultimate performance package for the SLS.


Stage 3 Package includes:

  • RENNtech ECU upgrade
  • RENNtech Long Tube Manifolds w/ 200 cell sport cats
  • Akrapovic Evolution Exhaust System for SLS


SLS (C197) Stock Performance:

  • 563 HP @ 6800 RPM; 479 LB-FT @ 4750 RPM


Modified Performance:

  • 635 HP @ 6800 RPM; 540 LB-FT @ 5200 RPM



*NOTE – We would need either the ECU or the vehicle bringing to our premises in Cheshire

Due to some of the products coming direct from RENNtech USA please allow 7-10 days for delivery

Prices may vary in accordance to the current exchange rate, please contact us for the current confirmed price

Our refunds policy can be found here