Hér er líka skemmtilegt svar, þar sem verið er að bera saman Yamaha WR (enduro) og Yamaha YZ (cross):
http://www.thumpertalk.com/forum/showthread.php?t=687064&page=2the WR:
has a dual output stator 100watts for lighting and 25 watts for charging
heavier flywheel for better traction
a gear for every situation… well thats debatable
no tool airbox
E start
kickstand
18'' rear tire for protecting the tube offroad
larger tank with RESERVE
spark arrestor
coolant recovery tank for overheating
the YZ:
has a 5 speed close ratio gearbox
closed cartridge forks
every bit taken off to prevent being heavy
will be bumpy offroad
loud exhaust
basically, if the weight is fine, get YZ forks, and have the suspension set up for you. because a YZ450 already has too much power for a track, so the WR450 with its taller gearing should do fine for jumps