THE BACK TIRE LOCKED UP IN A CURVE AND CAUSED A HEAD ON COLLISION. I FEEL THIS PROBLEM CAME FROM A CLUTCH FAILURE. WHAT FURTHER SUPPORTS MY THEORY IS THE FACT THAT THE CLUTCH ASSEMBLY FELL APART AND THE TIMING CHAIN WAS BROKEN. THE BACK TIRE HAD TEMPORARILY HALTED AS I MADE IT THROUGH THE CLUTCHES ON 2 OCCASIONS PRIOR TO MY CRASH.