Engine Configuration |
Inline Four, 4-Stroke |
Engine Displacement |
559cc |
Engine Cooling
System |
Liquid |
Compression Ratio |
13.1:1 |
Combustion Chamber
Design |
Pentroof |
Valves Per Cylinder |
4 |
Intake Valves Per Cylinder |
2 |
Exhaust Valves Per Cylinder |
2 |
Bore x Stroke |
67 x 42.5 mm |
Claimed Peak Horsepower |
115 bhp @ 14,500 rpm |
Claimed Peak Torque |
45 lbs. - ft. @ 10,500 rpm |
Engine Redline |
16,000 rpm |
Valve Angle (Included) |
11.5 degrees Intake / 12.25
degrees Exhaust (23.75 degrees) |
Combustion Chamber
Volume |
12.38 cc |
Valve Train
Type |
DOHC, Link-plate Chain
Drive, Bucket Followers, Shim-under-bucket
Lash Adjustment |
Valve Adjustment
Interval |
26,600 miles |
Intake Valve Diameter |
27 mm |
Exhaust Valve
Diameter |
23 mm |
Intake Valve Stem
Diameter |
4.5 mm |
Exhaust Valve
Stem Diameter |
4.5 mm |
Intake Valve Maximum
Lift |
8.5 mm |
Exhaust Valve
Maximum Lift |
7.7 mm |
Intake Valve Timing |
|
Open BTDC |
39 degrees |
Close ABDC |
65 degrees |
Duration |
284 degrees |
Exhaust
Valve Timing |
|
Open BBDC |
64 degrees |
Close ATDC |
24 degrees |
Duration |
268 degrees |
Valve Timing
Measuring Point |
0.15 mm Intake, 0.25
mm Exhaust |
Fuel Delivery
System |
Mikuni Fuel Injection |
Throttle
Body Venturi Size |
41 mm |
Air Filter
Type |
Pleated Paper, Oiled |
Exhaust
System Type |
4-2-1 w/ EXUP, Stainless
Steel w/ Titanium Silencer |
Ignition
System |
Digital CDI |
Lubrication
System |
Wet Sump |
Oil Capacity |
3.5 quarts |
Fuel Capacity |
4.6 gallons |
Transmission
Type |
6-speed |
Clutch Type |
Multi-plate, Wet, Back-torque-limiting |
Clutch Actuation System |
Cable |
Clutch Spring Type |
Coil |
Number Of Clutch Springs |
6 |
Number of
Clutch Plates |
17 |
Drive Plates |
9 |
Driven Plates |
8 |
Primary
Drive |
Gear |
Primary
Drive Gear Teeth (Ratio) |
85/ 41 (2.073:1) |
Final Drive
Sprocket Teeth (Ratio) |
44/ 16 (2.750:1) |
Transmission
Gear Teeth (Ratios) |
|
6th |
23/ 20 (1.150:1) |
5th |
27/ 21 (1.286:1) |
4th |
26/ 18 (1.444:1) |
3rd |
30/ 18 (1.667:1) |
2nd |
32/ 16 (2.000:1) |
1st |
31/ 12 (2.583:1) |
Transmission
Overall Ratios |
|
6th |
6.556:1 |
5th |
7.331:1 |
4th |
8.231:1 |
3rd |
9.503:1 |
2nd |
11.402:1 |
1st |
14.725:1 |