I HAVE MINE SETUP WITH THE E-LINE COIL, 18 AND 20 INCH RIMS, CLARKE FUEL CELL, ALUMINUM SKID PLATE FMF GNARLY PIPE AND SPARK ARRESTOR, KEIHN CARB, TALL SEAT FOAM, RANDY HAWKINS PRO TAPER BAR. WHEN THE SUSPENSION GETS MORE TIME ON IT I WILL PROBABLY HAVE IT REVALVED FOR OFF ROAD, HAVE NOT HAD THE BIKE LONG, BUT I AM PLEASED WITH IT. THIS IS MY 5TH CR AND THEY HAVE ALL BEEN GOOD BIKES. BEFORE SPENDING A LOT ON PIPE AND OTHER ENGINE MODS I WOULD PROBABLY HAVE A CYLINDER PORTED BY ERIC GORR, SOUNDS LIKE A BETTER RETURN ON INVESTMENT TO GET A LITTLE BETTER POWER CHARACTERISTIC.