Table 1. Engine: 2008 Buell 1125R Models
ITEM
DATA
Cylinders
2
Type
Four-stroke, liquid-cooled, 72 degree V-Twin
Bore
4.055 in.
103.00 mm
Stroke
2.658 in.
67.50 mm
Engine displacement
68.7 cu. in.
1125 cc
Compression ratio
12.3:1
Valve train
DOHC, four valves per cylinder
Fuel delivery
Dynamic Digital Fuel Injection III
Torque
82 ft-lbs
@8000 RPM
111.2 Nm
@8000 RPM
Lubrication
Dry sump, integrated oil reservoir
Table 2. Ignition System: 2008 Buell 1125R Models
ITEM
DATA
Battery
12 volt, 12 amp./hr, 200 CCA
Spark plugs
NGK CR9EKB
Size
10 mm
Gap
0.032 in.
0.81 mm
Torque
7-9 ft-lbs
10-12 Nm
NOTE
Specifications in this publication may not match those of official certification in some markets due to timing of publication printing, variance in testing methods, and/or vehicle differences. Customers seeking officially recognized regulatory specifications for their vehicle should refer to certification documents and/or contact their respective dealer or distributor.
Table 3. Drivetrain: 2008 Buell 1125R Models
COMPONENT
TYPE
Transmission
6-speed
Clutch
Hydraulic Vacuum Assist (HVA) Slipper Action
Front sprocket
Compensated
Final drive
Belt
Table 4. Cooling System: 2008 Buell 1125R Models
ITEM
DATA
Cooling system
Cooling circuit by integrated water pump, thermostat controlled bypass
Coolant
Ethylene glycol, 50/50 mixture
Normal operating temperature
140-220° F
60-104° C
Overtemperature threshold (lamp lit)
230° F
110° C
Table 5. Capacities: 2008 Buell 1125R Models
ITEM
U.S.
LITERS
Fuel tank total
(including reserve)
5.3 gallons
20.1
Reserve/low fuel lamp
illuminates at
0.8 gallon
3.0
Engine oil (including oil filter)
3.0 quarts
2.8
Coolant (including overflow tank)
0.8 gallon
3.0
Table 6. Sprocket Teeth: 2008 Buell 1125R Models
DRIVE
ITEM
NUMBER OF TEETH
Primary
Engine
36
Clutch
65
Final
Transmission
27
Rear wheel
70
Belt
145
Table 7. Transmission Gear Ratios: 2008 Buell 1125R Models
GEAR
RATIO
First (low) gear
2.462
Second gear
1.750
Third gear
1.381
Fourth gear
1.174
Fifth gear
1.042
Sixth gear
0.960
NOTE
Final gear ratios indicate the number of mainshaft revolutions required to drive the output sprocket one revolution.
Table 8. Bulb Chart: 2008 Buell 1125R Models
BULBS
BULBS
REQUIRED
WATTS
AMPS
PART
NUMBER
Headlamps
Bulb, low beam
2
35
2.6
Y0025.1AM
Bulb, high beam
2
35
2.6
Y0025.1AM
Bulb, running lamp
2
5
0.37
53436-97
Marker lamps
Tail/stop lamp
1
5/21
0.42/1.75
68169-90A
License plate lamp
1
5
0.37
53436-97
Front and rear turn signal lamps
LED assembly. Replace entire assembly upon failure.
Instrument cluster
LED assembly. Replace entire assembly upon failure.
Table 9. Tires: 2008 Buell 1125R Models
TIRE
TYPE
SOLO RIDING
LOADED TO GVWR
PSI
kPa
PSI
kPa
Front
Pirelli Diablo Corsa III 120/70 ZR 17
34
234
34
234
Rear
Pirelli Diablo Corsa III 180/55 ZR 17
36
248
36
248
Table 10. Dimensions: 2008 Buell 1125R Models
ITEM
IN.
MM
Overall length
78.6
1996
Overall width (without mirrors)
28.2
716
Wheel base
(without rider)
54.6
1387
Seat height
(with rider)
30.5
775
Ground clearance
(without rider)
4.5
114
Trail (with rider)
3.3
84
Rake (with rider)
21 degree
NOTE
Gross Vehicle Weight Rating (GVWR) and corresponding Gross Axle Weight Ratings (GAWR) are given on a label located on the frame steering head.
Table 11. Weights: 2008 Buell 1125R Models
ITEM
LB.
KG
Weight (wet)
455
206
GVWR
850
386
GAWR front
370
168
GAWR rear
510
231
Load capacity
395
179
NOTE
Wet weight is the total weight of the motorcycle including fuel and oil. GVWR is the Gross Vehicle Weight Rating (maximum allowable loaded vehicle weight). GAWR is the Gross Axle Weight Rating (maximum allowable loaded weight per axle). Load capacity is the amount of weight (including the rider) that can be carried on the motorcycle without exceeding the GVWR.