Better bearings, springs and billet parts than OEM. NO tune needed and will give a little bump to HP, since it is 35% lighter and 2mm smaller that OEM. 35% lighter than factory pulley, reducing rotational mass.
83mm supercharger pulley AMG mercedes M113K E55,CLS55,S55, CL55,G55, A1130900044
AMG Mercedes M113k 88mm supercharger pulley E55, SL55 A1130900044
AMG Mercedes M113k BLACK 77mm supercharger pulley E55, SL55, CLS55, G55 70HP +
77mm supercharger pulley AMG mercedes M113K E55,CLS55,S55, CL55,G55, Up 70 hp!!
83mm supercharger pulley / Belt wrap kit bundle AMG mercedes M113K E55, CLS55
Red Edition 77mm supercharger pulley AMG mercedes M113K E55,CLS55,S55, CL55, G55
