Stihl BR 800 X MAGNUM Leaf Blower Backpack Tube Throttle 79.9cc Engine 4283-011-1610USSTIHL BR 800 X MAGNUM Leaf Blower Backpack Tube Throttle 79. 9cc Engine 4283 011 1610US Prepared to be blown away. The most powerful blower in the STIHL line is here. The American built* BR 800 X MAGNUM is the ideal machine for professional landscapers tackling large properties. With a 4. 4 bhp engine, the BR 800 X offers 20 percent more power than the BR 700, allowing you to clear leaves, grass and heavy debris faster and more efficiently. By adding