Yamaha R3
42 hp, 321 cc, 366 lbs2019
Engine
Max power42 hp (@10 750 RPM)
Max torque21 lb ft (@9 000 RPM)
Displacement321 cc
LayoutDOHC Inline-2
Valves4
Redline12 245 RPM
Idling speed1 200 RPM
ManagementFuel Injection
Compression11.20:1
Bore x Stroke68.0 mm x 44.1 mm
Throttle bore32.0 mm
Oil capacity2.27 quart
Oil type10W40, Motul 300V 10W40, Shell Rotella 10W40
Spark plug typeNGK CR8E
CoolingLiquid
Weight to power8.71 lbs/hp
Power to weight286 hp/2500lbs
Battery type12V, 7.0 Ah, GTZ8V
Brakes
Front brakesDisc
Front caliper1 piston
Front brake diameter298 mm
Rear brakesDisc
Rear caliper1 piston
Rear brake diameter220 mm
Brake fluidDOT4
Tires
Front tire110/70 17 M/C (54H)
Pressure29.01 PSI
Rear tire140/70 17 M/C (66H)
Pressure36.26 PSI
Stock tiresDunlop SPORTMAX GPR-300
Dyno chart of 2019 Yamaha R3