Stock thickness head gasket = 11:1 compression (100 octane needed)

We highly recommend head studs when going with a big bore kit

The muffler comes ceramic coated in either chrome or black

Full Velocity

High Performance Cams / xp1000 - SKU: 10-HPC-6 Category_Default Category/SLED/Arctic Cat/Z1 Turbo '09-11 Stock thickness head gasket =These BMP custom camshafts are meant for the highest possible all around horsepower gains while using the stock valvetrain. No spring change is needed when switching to these high performance camshafts! Huge low end and top end increases. Works exceptional with our big bore, porting, bored throttle bodies and bigger valves. ***PLEASE NOTE*** These cams require re shimming of your valves as the base circle is cut down to achieve more lift. See our Shim