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2017 Aprilia Tuono V4 RR [Tuono Factory]

Engine Configuration 65-degree V4, 4 stroke,
Engine Displacement 1077 cc
Engine Cooling Liquid
Compression Ratio 13:1
Combustion Chamber Design Pentroof
Valves Per Cylinder 4
Intake Valves Per Cylinder
Exhaust Valves Per Cylinder
Bore x Stroke 81 mm x 52.26 mm
Conecting Rod Length
(center-to-center)
112mm
Connecting Rod Material Steel
Claimed Peak Horsepower 173 bhp @ 11,000 rpm
Claimed Peak Torque 87.4 lbs. - ft. @ 9,000 rpm
Engine Redline 12,500 rpm
Valve Angle (Included) 10.4 degrees Intake/ 12.0 degrees Exhaust (22.4 degrees)
Combustion Chamber Volume 20.0cc
Valve Train Type DOHC, Link-plateChain/ Gear Drive, Bucket Followers, Shim-under-bucket Lash Adjustment
Valve Adjustment Interval 12,427 miles (20,000 km)
Intake Valve Diameter 32.0 mm (steel)
Exhaust Valve Diameter 26.0 mm (steel)
Intake Valve Stem Diameter 5.0mm
Exhaust Valve Stem Diameter 5.0mm
Intake Valve Maximum Lift 9.8 mm
Exhaust Valve Maximum Lift 8.1 mm
Intake Valve Timing  
Open BTDC 22 degrees
Close ABDC 38 degrees
Duration 240 degrees
Exhaust Valve Timing  
Open BTDC 40 degrees
Close ABDC 10 degrees
Duration 230 degrees
Valve Timing Measuring Point 1.0mm (lift)
Fuel Delivery System Magneti Marelli EFI
Throttle Body Venturi Size 48 mm
Air Filter Type Pleated Paper 
Exhaust System Type 4-1-2 (Titanium headers/ Stainless Steel and aluminum canister)
Ignition System Digital
Lubrication System Wet Sump
Oil Capacity 4.3 quarts (4.1 liters)
Fuel Capacity 4.9 gallons (18.5 liters)
Transmission Type 6-speed, Constant Mesh 
Clutch Type Multi-plate, Back-torque-limiting
Clutch Actuation System Cable
Clutch Spring Type Coil
Number Of Clutch Springs 6
Number of Clutch Plates 19
  Drive Plates 10
          Driven Plates 9
Primary Drive Gear 
Primary Drive Gear Teeth (Ratio) 73/44 (1.659:1)
Final Drive Sprocket Teeth (Ratio) 42/15 (2.800:1)
Transmission Gear Teeth (Ratios)  
          6th 33/27 (0.960:1)
          5th 34/26 (1.308:1)
          4th 32/22 (1.455:1)
          3rd 34/20 (1.700:1)
          2nd 33/16 (2.063:1)
          1st 39/15 (2.600:1)
 Transmission Overall Ratios  
          6th 5.676:1
          5th 6.076:1
          4th 6.758:1
          3rd 7.897:1
          2nd 9.583:1
          1st 12.077:1