Review on Intake Exhaust Warrior Grizzly Wolverine by Duane Kaul

Husband installed these valves on his YamahaWarrior 350. The intake valve broke within minutes of starting the engine. (Snapped into the groove for the fusible pin) The valve fell into the cylinder, destroying its piston and head. I don't recommend buying it unless you want to turn your engine into a grenade. A total waste of money for cheap Chinese crap that would cost him close to $600 to fix.