HOME USED PARTS TOUR TECH AND SPECS CONTACT US

2004 YZFR6

 Engine Configuration  Inline Four, 4-Stroke, DOHC
 Engine Displacement  599 cc
 Engine Cooling  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  117 bhp @ 13,000 rpm
 Claimed Peak Torque  49 lbs. ft. @10,800 rpm
 Measured Peak Horsepower 101.8 bhp @ 12,500 rpm
 Measured Peak Torque 43.6 lbs. -ft. @ 12,000 rpm
 Measured Horsepower To Weight Ratio  4.15 pounds per horsepower
 Engine Redline 15,500 rpm
 Valve Angle (Included) 28 degrees (14 degrees
Intake, 14 degrees Exhaust)
 Combustion Chamber Volume 10.6c
 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 8.5 mm
 Exhaust Valve Maximum Lift 7.6 mm
 Intake Valve Timing
Open BTDC  39 degrees
Close ABDC  69 degrees
Duration 288 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 Mikuni Fuel Injection
Throttle Body Venturi Size 38 mm
 Air Filter Type Wet Element
 Exhaust System Type Four-into-two-into-one
 Ignition System Digital Electric
 Lubrication System Wet Sump
 Oil Capacity  3.6 quarts (3.4 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) 86/44 (1.955:1)
 Final Drive Sprocket Teeth (Ratio) 48/16 (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
Theoretical Speed In Gears At Redline  

6th
178 mph

5th
162 mph

4th
145 mph

3rd
124 mph

2nd
99 mph

 1st
68 mph