'04 GSXR1000

 Engine Configuration  Inline Four, 4-Stroke, DOHC
 Engine Displacement 988cc
 Engine Cooling System  Liquid
 Compression Ratio 12.0:1
 Combustion Chamber Design Twin Swirl
 Valves Per Cylinder  4

Intake Valves Per Cylinder
 2 (steel)

 Exhaust Valves Per Cylinder
 2 (steel)
 Bore x Stroke 73.0 x 59.0 mm
 Claimed Peak Horsepower 165 bhp @11,400 rpm
 Claimed Peak Torque N.A.
 Measured Peak Horsepower 15.05 bhp @ 11,500 rpm
Measured Peak Torque 77.7 lbs. -ft. @ 8250 rpm
Measured Horsepower-to-weight Ratio: 2.97 pounds per horsepower
 Engine Redline 12,250 rpm
 Valve Angle (Included) 25 degrees
 Combustion Chamber Volume 22.4cc
 Valve Train Type
DOHC, Link-plate Chain Drive,
Bucket Followers, Shim-under-bucket
Lash Adjustment
Valve Adjustment Interval 15,000 miles
Intake Valve Diameter  29 mm
Exhaust Valve Diameter 24 mm
Intake Valve Stem Diameter 4 mm
Exhaust Valve Stem Diameter 4 mm
Intake Valve Maximum Lift 9 mm
Exhaust Valve Maximum Lift 8 mm
Intake Valve Timing  

  Open BTDC
37 degrees

 Close ABDC
72 degrees

  Duration
 289 degrees
 Exhaust Valve Timing  

  Open BBDC
53 degrees

  Close ATDC
34 degrees

  Duration
266 degrees
 Valve Timing Measuring Point 0.3 mm
 Fuel Delivery System  Kehin Fuel Injection
 Throttle Body Venturi Size  42 mm
 Air Filter Type Non-woven Pleated Fabric
 Exhaust System Type  4-1 Titanium
 Ignition System  Digital Electric
 Lubrication System  Wet Sump
 Oil Capacity 3.4 quarts (3.2 liters)
 Fuel Capacity 4.8 gallons (18.0 liters)
 Transmission Type  6-speed, Constant Mesh
 Clutch Type  Multi-plate, Wet

  Clutch Actuation System
 Cable

  Clutch Spring Type
 Coil
Number Of Clutch Springs  5

 Number of Clutch Plates
 19

  Drive Plates
 10

  Driven Plates
 9
 Primary Drive  Gear (straight cut)
Primary Drive Gear Teeth (Ratio) 73/ 47 (1.553:1)
Final Drive Sprocket Teeth (Ratio) 42/ 17 (2.470:1)
Transmission Gear Teeth (Ratios)  

 6th
29/ 24 (1.208:1)

 5th
30/ 23 (1.304:1)

 4th
29/ 20 (1.450:1)

 3rd
37/ 20 (1.681:1)

 2nd
39/ 19 (2.052:1)

 1st
43/ 16 (2.687:1)
 Transmission Overall Ratios  

 6th
4.636:1

 5th
5.005:1

 4th
5.564:1

 3rd
6.453:1

 2nd
7.876:1

 1st
 10.312:1
 Theoretical Speed in Gears at Redline  

6th
178 mph

5th
165 mph

4th
148 mph

3rd
128 mph

 2nd
105 mph

1st
80 mph
 Engine speed at 60 mph 4114 rpm