What differences are there between the 2004 crf450 and the 2013 crf450?

What does a fmf fatty pipe do? What are the rules for women in motorcycle clubs? What causes a polaris 400 motor to seize? 5hp B and S engine shears key in flywheel on shutdown Why? Where is the spark plug on a polaris 500 4x4? How often do harley Davidson ignition modules go bad? Where is the VIN for a 2005 Yamaha grizzly 660? How can remove clucth for polaris magnum 330? What is the top speed of a Honda magna 750? Where is the dipstick on a Polaris 500? What is correct fuel for a XLH 1977 sportster? What is the Spark plug gap for a 1971 Honda cb 750 motorcycle? How much does a snowmobile weigh? Worlds rarest motorbike? Are x19 superpocket bikes street legal in the state of Florida? Can you replace your 13hp kholer motor on your black deck stx38 mower with a 12.5hp kholer motor off a yellow deck stx38? 1987 suzuki savage ls 650 anybody know how to adjust the automatic decompression cable clymer manual says attenuator lever shaft should protrude 3-5mm adjusting cable does not do this? Where does the name Harley Davidson comes from? What is the torqe of bolts on a 1999 Yamaha 250 head? Do you have to wear a helmet on a 49cc scooter?