Yamaha WR450F
50 hp, 449 cc, 124 kg2012 - 2015
MetricUS
Engine
Max power50 hp (@8 500 RPM)
Max torque50 Nm (@7 500 RPM)
Displacement449 cc
LayoutDOHC Single
Valves5
Redline11 500 RPM
Idling speed1 900 RPM
ManagementFuel Injection
Compression12.30:1
Bore x Stroke95.0 mm x 63.4 mm
Throttle bore42.0 mm
Oil capacity1.00 litre
Oil type10W40
Spark plug typeNGK CR8E
CoolingLiquid
Weight to power2.48 kg/hp
Power to weight403 hp/Ton
Battery type12V 6Ah, YTZ7S (F)
Brakes
Front brakesDisc
Front caliper2 pistons
Front brake diameter250 mm
Rear brakesDisc
Rear caliper1 piston
Rear brake diameter245 mm
Brake fluidDOT4
Tires
Front tireTube 80/100 R21
Pressure0.98 bar
Rear tireTube 120/90 R18
Pressure0.98 bar