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 2016 Yamaha YZF-R1

Engine Configuration  Inline Four, 4-stroke, with Crossplane Crankshaft
 Engine Displacement 998cc
 Engine Cooling System
 Compression Ratio 13.0:1
 Combustion Chamber Design  
 Valves Per Cylinder  4
Intake Valves Per Cylinder
 
Exhaust Valves Per Cylinder
 
 Bore x Stroke 79.0mm x 50.9mm
 Claimed Peak Horsepower
 Claimed Peak Torque
 Measured Peak Horsepower 167.51bhp@12,2300rpm
Measured Peak Torque 74.42 lbs.-ft. @ 10,500rpm
Measured Horsepower To Weight Ratio  2.657 pounds per horsepower
 Engine Redline 14,600rpm
Valve Angle (Included) 11.5 degree Intake/ 13.0 degrees Exhaust (24.5 degrees)
 Combustion Chamber Volume 20.8cc
 Valve Train Type DOHC, Reduction Gear and Link-Plate Chain, Finger Followers, Shim-in-retainer Lash Adjustments
 Valve Adjustment Interval    
 Intake Valve Diameter 33.0mm (Titanium)
 Exhaust Valve Diameter 26.5 mm (Steel)
  Intake Valve Stem Diameter
 Exhaust Valve Stem Diameter
  Intake Valve Maximum Lift 9.7 mm
 Exhaust Valve Maximum Lift 8.8 mm
  Intake Valve Timing  
Open BTDC
34 degrees
Close ABDC
70 degrees
Duration
284 degrees
 Exhaust Valve Timing  
Open BBDC
 70 degrees
Close ATDC
30 degrees
Duration
280 degrees 
 Valve Timing Measuring Point 0.15mm Intake, 0.25mm Exhaust (lift)
 Fuel Delivery System
Throttle Body Venturi Size 45mm
 Air Filter Type
 Exhaust System Type 4-2-1 (Stainless Steel/ Titanium)
 Ignition System
 Lubrication System
 Oil Capacity
 Fuel Capacity
 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

 Number of Clutch Plates
Drive Plates
Driven Plates
 Primary Drive Gear (straight cut)
Primary Drive Gear Teeth (Ratio) 67/41 (1.634:1)
Final Drive Sprocket Teeth (Ratio) 41/16 (2.563:1)
Transmission Gear Teeth (Ratios)  
6th
30/24 (1.250:1)
5th
29/21 (1:381:1)
4th
30/19 (1.579:1)
3rd
35/19  (1.842:1)
2nd
37/17 (2.176:1)
1st
39/15 (2.600:1)
 Transmission Overall Ratios  N/A
6th
5th
4th
3rd
2nd
1st
 Theoretical Speed in Gears at Redline  N/A
6th
5th
4th
3rd
2nd
1st