GENERAL INFORMATION MANUFACTURER Yamaha MODEL YEAR 2006 MODEL YFZ450 ENGINE 4-stroke single, titanium 5-valve DOHC DISPLACEMENT 449 cc BORE X STROKE 95 x 63.4 mm  COMPRESSION RATIO 11.4:1 CARBURETION Keihin 39 mm FCR with throttle position sensor  COOLING Liquid-cooled with fan STARTER Electric  CLUTCH Manual  TRANSMISSION 5-speed  FINAL DRIVE Sealed O-ring chain  IGNITION DC - CDI  SUSPENSION Front: Independent double wishbone, 9.1 in. w/ rebound, compression & threaded preload adjustment  Rear: Cast aluminum swing arm, 10.6 in. w/ rebound, compression & threaded preload adjustment  BRAKES Front: Dual hydraulic disc, twin piston  Rear: Hydraulic disc, twin piston TIRES Front: AT21 x 7-10 radial  Rear: AT20 x 10-9 radial  LENGTH 72.4 in. WIDTH 46.1 in. HEIGHT 42.9 in. WHEELBASE 50.4 in. SEAT HEIGHT 31.9 in. GROUND CLEARANCE 4.4 in. DRY WEIGHT 350 lbs. FUEL CAPACITY 2.6 gal.