2011 Arctic Cat Prowler XT/XTX/XTZ ATV/ROV Service Manual, Page 127Get this manual
7Install new grafoil gasket in the rear cylinder head; then place the rear exhaust pipe into position and loosely secure with two cap screws
9Install the two springs (A) at the juncture of front and rear exhaust pipesWith new grafoil seal (B) in place, install the muffler and secure with two springs; then tighten the cap screws from steps and to 20 ft-lb