2010 Aprillia RSV4 Factory

Engine Configuration 65 degree V4, 4-Stroke
Engine Displacement 999.6 cc
Engine Cooling Liquid
Compression Ratio 13.0:1
Combustion Chamber Design Pentroof
Valves Per Cylinder 4
Intake Valves Per Cylinder 2 (Titanium)
Exhaust Valves Per Cylinder 2 (Steel)
Bore x Stroke 78 mm x 52.3 mm
Conecting Rod Length
          (center-to-center)
112.0 mm
Connecting Rod Material Steel
Measured Peak Horsepower 161.61 bhp @ 12,700 rpm
Measured Peak Torque 76.97 lbs. - ft. @ 9,700 rpm
Measured Horsepower-to-weight Ratio 2.85 pounds per horsepower
Engine Redline 14, 100 rpm
Valve Angle (Included) 10 degrees Intake/ 12 degrees Exhaust (22 degrees)
Combustion Chamber Volume 21.2 cc
Valve Train Type DOHC, Link-plate Chain/Gear Drive, Bucket Followers, Shim-under-bucket Lash Adjustment
Valve Adjustment Interval 12,400 miles
Intake Valve Diameter 32.0 mm
Exhaust Valve Diameter 26.0 mm
Intake Valve Stem Diameter 6.0 mm
Exhaust Valve Stem Diameter 6.0 mm
Intake Valve Maximum Lift 10.2 mm
Exhaust Valve Maximum Lift 8.1 mm
Intake Valve Timing  
          Open BTDC 12 degrees
          Close ABDC 48 degrees
          Duration 240 degrees
Exhaust Valve Timing  
          Open BTDC 48 degrees
          Close ABDC 10 degrees
          Duration 238 degrees
Valve Timing Measuring Point 1.0 mm (lift)
Fuel Delivery System Weber-Marelli Fuel Injection
Throttle Body Venturi Size 48 mm
Air Filter Type Pleated Paper
Exhaust System Type 4-2-1 (Stainless Steel)
Ignition System Digital
Lubrication System Wet Sump
Oil Capacity 4.2 quarts (4.0 liters)
Fuel Capacity 4.5 gallons (17 liters)
Transmission Type 6-speed, Constant Mesh, Cassette-type
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 19
          Drive Plates 9
          Driven Plates 10
Primary Drive Gear (Straight-cut)
Primary Drive Gear Teeth (Ratio) 44/73 (1.659:1)
Final Drive Sprocket Teeth (Ratio) 40/16 (2.500:1)
Transmission Gear Teeth (Ratios)  
          6th 33/27 (1.222:1)
          5th 34/26 (1.308:1)
          4th 32/22 (1.455:1)
          3rd 34/20 (1.700:1)
          2nd 33/16 (2.061:1)
          1st 39/15 (2.600:1)
 Transmission Overall Ratios  
          6th 5.068:1
          5th 5.425:1
          4th 6.035:1
          3rd 7.051:1
          2nd 8.548:1
          1st 10.784:1