Used Turbo kit for 2011 arctic cat M8 / HCR 800. Clutching (complete driven clutch with extra helix.) hi and low elevation springs and weights., Hi pressure fuel pump and adjustable pressure regulator, ECU with turbo flash mod. Extended exhaust pipe included. Cutter kit with Areocharger Turbo , many extras. This kit fits 07-11 M8 800cc arctic cats, The ECU is for an 11 HCR. .