I JUST RECENTLY PURCHASED AN 89 KDX AND AM VERY PLEASED IT IS A FINE PERFORMING BIKE BY THE WAY IM 40 YEARS OLD AND FIND THAT AFTER CUTING DOWN THE BARS IT HANDELS WELL IN THE HEAVY WOODED AREA WHERE I LIVE I WOULD LIKE SOME PERFOMANCE TIPS IF ANYONE KNOWS SOME THANX STEVE !