2007 Yamaha YZF-R6

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 Engine Configuration Inline Four, 4-stroke
Engine Displacement 599 cc
 Engine Cooling System  Liquid
 Compression Ratio  12.8:1
 Combustion Chamber Design  Pentroof
 Valves Per Cylinder  4
 Intake Valves Per Cylinder
 2
 Exhaust Valves Per Cylinder
 2
Bore x Stroke  67 mm x 42.5 mm
 Measured Peak Horsepower  107.98 bhp @ 14,400 rpm
 Measured Peak Torque  42.61 lbs. - ft. @ 11,600 rpm
 Measured Horsepower-to-weight Ratio  3.89 pounds per horsepower
 Claimed Engine Redline  16,500 rpm
 Measured Engine Redline  15,900 rpm
 Valve Angle (Included)  11.5 degrees intake, 12.25 degrees exhaust (23.75 Degrees)
 Combustion Chamber Volume  7.8 cc
 Valve Train Type  DOHC, Link-plate Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment
 Valve Adjustment Interval  26,600 miles
 Intake Valve Diameter  27 mm
 Exhaust Valve Diameter  23 mm
 Intake Valve Stem Diameter  4.5 mm
 Exhaust Valve Stem Diameter  4.5 mm
 Intake Valve Maximum Lift  8.5 mm
 Exhaust Valve Maximum Lift  7.7 mm
 Intake Valve Timing  
 Open BTDC
 47 degrees
 Close ABDC
 71 degrees
 Duration
 298 degrees
 Exhaust Valve Timing  
 Open BBDC
 67 degrees
 Close ATDC
 29 degrees
 Duration
 276 degrees
 Valve Timing Measuring Point  0.15 mm Intake, 0.25 mm Exhaust lift
 Fuel Delivery System  Mikuni Fuel Injection
 Throttle Body Venturi Size  41 mm
 Air Filter Type  Pleated Paper Element, Oiled
 Exhaust System Type  4-2-1
 Ignition System  Digital Electronic
 Lubrication System  Wet Sump
 Oil Capacity  3.5 quarts
 Fuel Capacity  4.6 gallons
 Transmission Type  6-speed, Constant Mesh
 Clutch Type  Multi-plate, Wet, Back-torque-limiting
  Clutch Actuation System
 Cable
 Clutch Spring Type
 Coil
  Number Of Clutch Springs
 6
 Number of Clutch Plates  17
 Drive Plates
 9
  Driven Plates
 8
 Primary Drive  Gear (Straight-cut)
 Primary Drive Gear Teeth (Ratio)  85/ 41 (2.073:1)
 Final Drive Sprocket Teeth (Ratio)  44/ 16 (2.750:1)
 Transmission Gear Teeth (Ratios)  
 6th
 23/ 20 (1.150:1)
 5th
 27/ 21 (1.286:1)
 4th
 26/ 18 (1.444:1)
 3rd
 30/ 18 (1.667:1)
 2nd
 32/ 16 (2.000:1)
 1st
 31/ 12 (2.583:1)
 Transmission Overall Ratios  
 6th
 6.556:1
 5th
 7.331:1
 4th
8.231:1
 3rd
 9.503:1
 2nd
 11.402:1
 1st
 14.725:1