| Engine Configuration |
Inline Four, 4 Stroke, DOHC |
| Engine Displacement |
998 cc |
| Engine Cooling System |
Water |
| Compression Ratio |
12.9:1 |
| Combustion Chamber Design |
Pentroof |
| Valves Per Cylinder |
4 |
| Intake Valves Per Cylinder |
2 |
| Exhaust Valves Per Cylinder |
2 |
| Bore x Stroke |
76 mm x 55 mm |
| Claimed Peak Horsepower |
183 bhp @ 11,500 rpm |
| Claimed Peak Torque |
83.3 lbs. - ft. @ 8,700 rpm |
| Measured Peak Horsepower |
155.91 bhp @ 12,100 rpm |
| Measuerd Peak Torque |
72.72 lbs.-ft @ 9,000 rpm |
| Engine Redline |
13,000 rpm |
| Valve Angle (Included) |
12 degrees intake, 13 degrees exhaust (25 degrees) |
| Combustion Chamber Volume |
21.0 cc |
| Valve Train Type |
DOHC, Gear and Roller Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
| Valve Adjustment Interval |
15,000 miles |
| Intake Valve Diameter |
30 mm |
| Exhaust Valve Diameter |
24.5 mm |
| Intake Valve Stem Diameter |
4.5 mm |
| Exhaust Valve Stem Diameter |
4.5 mm |
| Intake Valve Maximum Lift |
9.7 mm |
| Exhaust Valve Maximum Lift |
8.5 mm |
| Intake Valve Timing · Open BTDC |
35 degrees |
| Intake Valve Timing · Close ABDC |
77 degrees |
| Intake Valve Timing · Duration |
292 degrees |
| Exhaust Valve Timing · Open BBDC |
62 degrees |
| Exhaust Valve Timing · Close ATDC |
38 degrees |
| Exhaust Valve Timing · Duration |
280 degrees |
| Valve Timing Measuring Point |
0.2 mm Intake, 0.3 mm Exhaust |
| Fuel Delivery System |
Kwihin Fuel Injection |
| Throttle Body Venturi Size |
43 mm |
| Air Filter Type |
Pleated Paper |
| Exhaust System Type |
4-2-1, Titanium |
| Ignition System |
Digital |
| Lubrication System |
Wet Sump |
| Oil Capacity |
4.2 quarts |
| Fuel Capacity |
4.5 gallons |
| Transmission Type |
6-speed, Constant Mesh |
| Clutch Type |
Multi-plate, Wet, Back-Torque Limited |
| 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 (Straight Cut) |
| Primary Drive Gear Teeth (Ratio) |
87/ 54 (1.611:1) |
| Final Drive Sprocket Teeth (Ratio) |
41/ 17 (2.412:1) |
| Transmission Gear Teeth (Ratios) · 5th |
28/ 20 (1.400:1) |
| Transmission Gear Teeth (Ratios) · 4th |
31/ 20 (1.550:1) |
| Transmission Gear Teeth (Ratios) · 3rd |
33/ 19 (1.737:1) |
| Transmission Gear Teeth (Ratios) · 2nd |
39/ 19 (2.053:1) |
| Transmission Gear Teeth (Ratios) · 1st |
39/ 15 (2.600:1) |