2000 Yamaha YZF-R6

 Engine Configuration  Inline Four, 4-Stroke, DOHC
 Engine Displacement  599 cc
 Engine Cooling System  Liquid
 Compression Ratio 12.4:1
 Combustion Chamber Design Pentroof
 Valves Per Cylinder  4
Intake Valves Per Cylinder
 2

  Exhaust Valves Per Cylinder
 2
 Bore x Stroke 65.5 x 44.5
 Claimed Peak Horsepower  120 bhp @ 13,000 rpm
 Claimed Peak Torque  50.2 lbs. ft. @11,500 rpm
 Measured Peak Horsepower 96.5 bhp @ 12,800 rpm
 Measured Peak Torque 41.6 lbs. -ft. @ 11,400 rpm
 Measured Power To Weight Ratio  4.46 pounds per horsepower
 Engine Redline 15,500 rpm
 Valve Angle (Included) 28 degrees (14 degrees
Intake, 14 degrees Exhaust)
 Combustion Chamber Volume 13.1 cc
 Valve Train Type   DOHC, Link-plate Chain Drive,
Bucket Followers, Shim-under-bucket
Lash Adjustment
 Valve Adjustment Interval 26,000 miles
 Intake Valve Diameter 25 mm
 Exhaust Valve Diameter 22.0 mm
 Intake Valve Stem Diameter  4.0 mm
 Exhaust Valve Stem Diameter  4.0 mm
 Intake Valve Maximum Lift 7.9 mm
 Exhaust Valve Maximum Lift 7.5 mm
 Intake Valve Timing
Open BTDC
 41 degrees
Close ABDC
 71 degrees
Duration
255 degrees
 Exhaust Valve Timing
Open BBDC
66 degrees
Close ATDC
34 degrees
Duration
280 degrees
 Valve Timing Measuring Point Intake, 0.15 mm; Exhaust, 0.25 mm
 Fuel Delivery System (4) Keihin CVRD37 Flat-side CV
 Carburetor Venturi Size 36.5 mm
 Air Filter Type Pleated Paper
 Exhaust System Type Four-into-two-into-one
 Ignition System Digital Electronic
 Lubrication System Wet Sump
 Oil Capacity  3.7 quarts (3.5 liters)
 Fuel Capacity 4.5 gallons (17 liters)
 Transmission Type  6-speed, Constant Mesh
 Clutch Type  Multi-plate, Wet
Clutch Actuation System
Cable
Clutch Spring Type
Coil
Number Of Clutch Springs
6
 Number of Clutch Plates 15
 Drive Plates
8
 Driven Plates
7
 Primary Drive Gear
 Primary Drive Gear Teeth (Ratio) 44/ 86 (1.955:1)
 Final Drive Sprocket Teeth (Ratio) 15/ 45 (3.000:1)
 Transmission Gear Teeth (Ratios)
6th
26/ 24 (1.083:1)
5th
 25/ 21 (1.190:1)
4th
 32/ 24 (1.333:1)
3rd
 28/ 18 (1.556:1)
2nd
 37/ 19 (1.947:1)
1st
37/ 13 (2.846:1)
 Transmission Overall Ratios
6th
 6.352:1
5th
 6.979:1
4th
7.818:1
3rd
9.126:1
2nd
11.419:1
1st
16.692:1