2011 Honda CBR250R (CBR250R ABS)

Engine Configuration Single, 4-stroke
Engine Displacement 249 cc
Engine Cooling Liquid
Compression Ratio 10.7:1
Combustion Chamber Design Pentroof
Valves Per Cylinder 4
Intake Valves Per Cylinder 2 (Steel)
Exhaust Valves Per Cylinder 2 (Steel)
Bore x Stroke 76.0mm x 55.0mm
Connecting Rod Length
Connecting Rod Material Steel
Claimed Peak Horsepower 22.11bhp @ 9,300rpm
Claimed Peak Torque 14.71lbs.-ft. @ 6,900
Engine Redline 10,500 rpm
Valve Angle (Included) 12.0mm Intake/ 14.0 degrees Exhaust (26.0 degrees)
Combustion Chamber Volume 17.7cc
Valve Train Type DOHC, Link-plate Chain Drive, Roller Cam Followers, Forked Rockers Shim-under-rocker Lash Adjustment
Valve Adjustment Interval 16,000 miles
Intake Valve Diameter 30.0 mm
Exhaust Valve Diameter 24.0 mm
Intake Valve Stem Diameter 4.0 mm
Exhaust Valve Stem Diameter 4.0 mm
Intake Valve Maximum Lift 7.5 mm
Exhaust Valve Maximum Lift 6.5 mm
Intake Valve Timing  
Open BTDC 20 degrees
Close ABDC 35 degrees
Duration 235 degrees
Exhaust Valve Timing  
Open BTDC 40 degrees
Close ABDC 0 degrees
Duration 220 degrees
Valve Timing Measuring Point 1.0mm (lift)
Fuel Delivery System PGM-FI Fuel Injection
Throttle Body Venturi Size 38mm
Air Filter Type Pleated Paper Element
Exhaust System Type 1-1 (Stainless Steel with Steel muffler)
Ignition System Digital
Lubrication System Wet Sump
Oil Capacity 1.9 quarts (1.8 liters)
Fuel Capacity 3.4 gallons (12.9 liters)
Transmission Type 6-speed Constant Mesh
Clutch Type Multi-plate, Wet
Clutch Actuation System Cable
Clutch Spring Type Coil
Number Of Clutch Springs 5
Number of Clutch Plates 9
Drive Plates 4
          Driven Plates 5
Primary Drive Gear (straight-cut)
Primary Drive Gear Teeth (Ratio) 73/26 (2.808:1)
Final Drive Sprocket Teeth (Ratio) 38/14 (2.714:1)
Transmission Gear Teeth (Ratios)  
          6th 26/27 (0.962:1)
          5th 29/26 (1.115:1)
          4th 30.23 (1.304:1)
          3rd 33/21 (1.571:1)
          2nd 36/17 (2.117:1)
          1st 40/12 (3.333:1)
 Transmission Overall Ratios  
          6th 7.331:1
          5th 8.497:1
          4th 9.938:1
          3rd 11.972:1
          2nd 16.133:1
          1st 25.400:1