The R-Series Pedigree: YZF-R3 Model Evolution A record of all major model changes to the YZF-R3 2015 2020 Liquid-cooled in-line 2-cylinder DOHC engine with 4 valves per cylinder DiASil Cylinder design (first use on a Yamaha 2-cylinder engine) Carburized connecting rods, forged pistons, and offset cylinder design New exterior styling ("Next R-DNA") 37 mm inverted front suspension Overall length 2,090mm/82.3in ← Overall width 720mm/28.3in 730mm Overall height 1,135mm/44.7in 1140mm Seat height 780mm/30.7in ← Wheelbase 1,380mm/54.3in ← Wet(with oil and a full fuel tank) 167kg/368lbs 170kg/375lbs Engine type Liquid cooled,4-stroke,DOHC,4-valve ← Cylinder arrangement In-line,2-cylinder ← Displacement 321cm³ ← Bore & stroke 68.0 × 44.1mm/2.7in × 1.7in ← Compression ratio 11.2 : 1 ← Maximum horse power - 30.9kW(42.0PS)/10750r/min Maximum torque 29.6Nm(3.0kgf・m)/9000r/min 28.8N・m(2.9kgf・m)/9000r/min Lubrication system Force-feed lubrication,wet sump Wet sump Engine oil capacity 2.4L/0.6usgal ← Fuel tank capacity 14L/3.7usgal ← Frame type Diamond ← Caster angle 25°00’ ← Trail 95mm/3.7in ← Steering Angle - - Tire size(Front) 110/70-17M/C 54H Tubeless ← Tire size(Rear) 140/70-17M/C 66H Tubeless ← Rim size(Front) - - Rim size(Rear) - - Brake type(Front) Hydraulic disc brake ← Brake type(Rear) Hydraulic disc brake ← Diameter of brake disk(Front) 298mm/11.7in ← Diameter of brake disk(Rear) 220mm/8.7in ← Inside diameter of drum / Effective diameter of disc(Front) 268mm/10.6in ← Inside diameter of drum / Effective diameter of disc(Rear) 189mm/7.4in ← Suspension type(Front) Telescopic ← Suspension type(Rear) Swingarm ← Shock absorber assembly type(Front) Coil spring/oil damper ← Shock absorber assembly type(Rear) Coil spring/oil damper ← Wheel travel(Front) 130mm/5.1in ← Wheel travel(Rear) 125mm/4.9in ← Inner tube diameter of front fork 41mm/1.6in 37.0mm/1.5in Headlight bulb type Halogen bulb LED Headlight 12V,55W × 2 LED Auxiliary light 12V,5W × 1 LED Brake/tail light LED × 1 ← Turn signal light(Front) 12V,21/5W × 2 ← Turn signal light(Rear) 12V,21W × 2 ← Speedometer Digital ← The R-Series Pedigree