geared up here
i put a 2.1 ratio BDX lite gear set in my 2010 HCR, stock gearing = 74mph and new gearing = 104mph
I also installed a D&D y-pipe, turned down the oil pump one turn, at 2000ft I am running 77grams of weight 7800-7900 RPM (thats the RPM needed with a Y-pipe) with a stock 36 degree helix, all thats left to do is install a Cutler can.
Cat did a helluva job, this sled simply flys!