THE ONLY PROBLEM SO FAR IVE FOUND IS THIS BIKE STALLS EASY WHEN PASSING THROUGH TIGHT TRAILS WHERE YOU HAVE TO WORK THE CLUCH AND THROTTLE TOGETHER TO KEEP SLOW FORWARD MOMENTUM GOIUNG. ALSO THE ELECTRIC STARTER IS ALITTLE WEAK SOUNDING I KNOW I KNOW 12:1 COMPRESSION. BUT IT STILL SOUNDS HALF DEAD IS THERE A STRONGER STARTER AVAILABLE .