Question: are yfz 450 fuel injected?
Answer: The 2006 YFZ450 moved from a 439cc engine to a 449cc engine. The newer Yamaha YFZ450R models feature a 449cc fuel injected engine. ... The EFI system, wider stance, and revised ergonomics (the T-shape seat is awesome) are three features that I really like about the latest YFZ450R.