Gen 4 Supercharger Upgrade

PRODUCT DESCRIPTION * Allow 5-6 weeks for orders to be shipped.  Supercharger systems are made to order. Improved efficiency and reduced Intake Air Temperatures Weistec Stage 3 Gen 4 Supercharger Upgrade is only for those upgrading their Stage 3 Gen 2/3 unit to a Stage 3 Gen 4 unit.  All supporting modifications/part are not included.  This is just a replacement supercharger unit.  *Product may not be emissions compliant. Check local laws prior to installation.  Key Features: 3.0L Twin-Screw Compressor Module Why Twin-Screw? Updated Rotor Design Updated Rotor Housing More Power All New 3/5 Rotors New Updated Rotor Profile Increased Efficiency Higher RPM Higher Pressure Ratios Increased Rotor Filling Decreased Turbulence Reduced IAT's  *Power and IAT's will vary depending on operating conditions, other modifications, and weather conditions.  Vehicle Fitment Matrix: YEAR MAKE MODEL TRIM ENGINE 2015 MERCEDES-BENZ SLS AMG BLACK SERIES (W197) NA 6.2L V