Here it is guys , the long awaited X5 lightning ! NEW ULTRA LOW CG COOLING HEAD !! This engine has the balanced feel and power to be used in buggy or truck , engine is fitted with full cnc "team" piston , R7 rod , 17011 front bearing ,28028 turbo combustion chamber ,novarossi factory patented ceramic rear bearing and all your typical novarossi quality built into it . Recommend using byron fuels for best performance and longevity