ANYBODY HAVE A HEAVY DUTY CONNECTING ROD PUT IN WITH THEIR 440 KIT. I'VE HEARD SOME HAVE BROKE WITH USING AFTER MARKET CDI. BECAUSE OF OVER REV. I'VE ALSO HEARD IF YOU DON'T HAVE YOUR CASES SPLIT AND A FULL SLEEVE PUT IN, THEY BEGIN TO SHOW WEAR AT THE BOTTOM AND CRACK DUE TO THE THINESS AT THE BOTTOM OF THE SLEEVE TO GET THEM IN. ANY PROBLEMS ANYONE? GETTING WORRIED ABOUT THE LIABILITY OF THE 440. HELP!

 

Sound like you have been talking to Sparks Racing.
IMS has been producing 440 kit for the xr for a couple of years longer than the 400ex has been around and I havnt heard that many complaints.

 

HOW LONG HAS YOUR 440 BEEN IN. JUST WANT TO MAKE SURE IF I SHOULD INVEST MONEY ON CONNECTING ROD.