Spec Sheet
The information below is specific to the Honda - NT 650 L Bros MKll (RC31) PGM ignition 90-92, showing anything for service information to the amount of fork oil or even the tyre pressures. If you would like to contribute any missing information, please use the edit link below.
Back.Bike Info
CC:
650
Chassis info:
RC31
Service
Cooling System (litres):
2 litres total, 1.6 litres after drain.
Engine Oil quantity with filter (litres):
2.3 liters
Final Drive grade:
O-ring 525 chain with 112 links
Fork oil grade:
10W
Front Fork Oil cc (right leg):
499cc
Idle Speed (rpm):
1200 +/- 100 rpm
Spark Plugs Gap (mm):
0.8mm - 0.9mm
Sprocket carrier bearing:
6007 2RS
Tyre Pressure Back Bar / psi:
33 psi, 36 psi for prolonged high speed riding.
Tyre Pressure Front Bar / psi:
33 psi
Valve Clearance Cold - Exhaust:
0.20 +- 0.02 mm
Valve Clearance Cold - Inlet:
0.15 +- 0.02 mm
Brakes
Front:
Disc
Rear:
Disc
Front Disc Size:
320mm
Front-Pistons-per-caliper:
4
Rear Disc Size:
208mm
Rear-Pistons-per-caliper:
1
Dimensions
Dry Weight:
180 Kg
Fuel Capacity:
10 Litres + 2 Litre reserve
Ground Clearance:
0.155mm
Height:
1050mm
Length:
2060mm
Rake:
27 degrees
Reserve Fuel Capacity:
2 litre
Seat Height:
0.778mm
Trail:
111mm
Wheelbase:
1425mm
Width:
0.695mm
Electrics
Voltage:
12v
Ignition:
CDI
Main Fuse:
30A main, 10A x 6, 15A x 1.
Spark Plugs:
Four NGK DPR8EA-9
Engine
Type:
Liquid Cooled SOHC V Twin
Air Filtration:
Paper element
Bore x Stroke:
79mm x 66mm
Carburation:
Two CV carbs
Compression Ratio:
9.4:1
Displacement:
647cc
Lubrication System:
Forced pressure and wet sump
No. of Valves:
6 - 2 Inlet 1 Exhaust Per Cylinder
Starting:
Electric starter
Valve Train:
Silent chain
Transmission
Chain Number of Links:
112
Final Drive:
Chain
Gearchange Pattern:
1-N-2-3-4-5
Gear Ratio 1st:
14/36
Gear Ratio 2nd:
17/32
Gear Ratio 3rd:
20/30
Gear Ratio 4th:
22/29
Gear Ratio 5th:
27/29
Sprocket front:
JTF 296-16
Sprocket rear:
JTR 1311-44
Transmission:
5 speed manual
Misc.
Exhaust:
2 into 1 with collector, stubby exhaust can
Frame:
Twing tube diamond, aluminium, with stressed member.
Motorcycle Style:
ROADSTER
Power
Fuel Consumption:
20 Km per litre
Max Power Output:
55 PS or 54 Hp at 7500 rpm
Max Torque:
57 Nm at 6500 rpm
Power/Weight Ratio:
0.2235 KW per Kg
Suspension
Front:
41mm Showa Telescopic Fork
Rear:
Monoshock on Singlesided Swinging Arm, 120mm axle travel
Tyres
Front:
120/70-H17 Tubeless
Rear:
150/60-H18 Tubeless
Wheels
Bearing Front Left:
6004 LU, 20mm x 42mm x 12mm
Bearing Front Right:
6004 LU, 20mm x 42mm x 12mm
Rear:
Two 6908 LU 40mm x 62mm x 12mm, and one needle roller bearing with no inner ring NK50/25 50mm x 62mm x 25mm.
Add information to the model
All information presented on the website is given to the best of our knowledge at the given time. All information is intended to only as a guide. A major Japanese manufacturer's quote:
We reserve the right to vary our specification with or without notice, and as such time and in such manner as we think fit.