Table 1. Engine: 2006 Twin Cam Models
ITEM
SPECIFICATION
Number of cylinders
2
Type
4-cycle, 45 degree
V-Type, air cooled
Compression ratio
8.9-1
Bore
3.75 in.
95.18 mm
Stroke
4.00 in.
101.52 mm
Displacement
88 cu. in.
1450 cc
Torque
85.0 ft-lbs @ 3000 RPM
115.0 Nm @ 3000 RPM
Table 2. Ignition System: 2006 Twin Cam Models
COMPONENT
SPECIFICATION
Ignition timing
not adjustable
Battery
12 volt, 19 amp/hr,
sealed and maintenance free
Spark plug type
HD-6R12
Spark plug size
12 mm
Spark plug gap
0.038-0.043 in.
0.97-1.09 mm
Spark plug torque
12-18 ft-lbs
16.3-24.4 Nm
Table 3. Transmission Specifications
TRANSMISSION
SPECIFICATION
Type
Constant mesh, foot shift
Speeds
5 forward
Table 4. Sprocket Teeth: 2006 Softail Models
DRIVE
ITEM
NUMBER OF TEETH
Primary
Engine
25
Clutch
36
Final
Transmission
32
Rear wheel
70
Table 5. Gear Ratios: 2006 Softail Models
GEAR
RATIO
1st Gear
10.110
2nd Gear
6.958
3rd Gear
4.953
4th Gear
3.862
5th Gear
3.150
NOTE
Gross Vehicle Weight Rating (GVWR) (maximum allowable loaded vehicle weight) and corresponding Gross Axle Weight Ratings (GAWR) are given on a label located on the frame below the steering head.
Table 6. Weights: 2006 FLSTC, FLSTF, FLSTSC, FLSTN and FLST
ITEM
FLSTC
FLSTF
FLSTSC
FLSTN
FLST
LB.
KG
LB.
KG
LB.
KG
LB.
KG
LB.
KG
Weight as shipped from factory
719
326
683
310
710
323
693
315
672
305
GVWR
1160
527
1160
527
1160
527
1160
527
1160
527
GAWR front
430
195
430
195
430
195
430
195
430
195
GAWR rear
730
331
730
331
730
331
730
331
730
331
Table 7. Weights: 2006 FXST, FXSTD, FXSTB and FXSTS
ITEM
FXST
FXSTD
FXSTB
FXSTS
LB.
KG
LB.
KG
LB.
KG
LB.
KG
Weight as shipped from factory
651
296
651
296
651
296
671
305
GVWR
1125
511
1125
511
1125
511
1125
511
GAWR front
415
188
415
188
415
188
415
188
GAWR rear
710
322
710
322
710
322
710
322
Table 8. Dimensions: 2006 FLSTC, FLSTF, FLSTSC, FLSTN and FLST
ITEM
FLSTC
FLSTF
FLSTSC
FLSTN
FLST
IN.
MM
IN.
MM
IN.
MM
IN.
MM
IN.
MM
Wheel base
64.5
1638.3
64.5
1638.3
64.5
1638.3
64.5
1638.3
64.5
1638.3
Overall length
94.5
2400.3
94.3
2395.2
94.5
2400.3
94.7
2405.4
94.5
2400.3
Overall width
37.5
952.5
40.2
1021.1
32.7
829.6
38.4
975.4
37.5
952.5
Road clearance
5.1
129.5
5.1
129.5
4.9
124.9
4.8
121.9
5.1
129.5
Overall height
57.8
1468.1
44.5
1130.3
43.6
1106.7
43.5
1104.9
57.8
1468.1
Saddle height
25.5
647.7
25.4
645.2
25.9
657.9
24.5
622.3
25.5
647.7
Table 9. Dimensions: 2006 FXST, FXSTD, FXSTB and FXSTS
ITEM
FXST
FXSTD
FXSTB
FXSTS
IN.
MM
IN.
MM
IN.
MM
IN.
MM
Wheel base
66.9
1699.3
66.6
1691.6
66.9
1699.3
65.4
1661.2
Overall length
95.0
2413.0
95.4
2423.2
95.0
2413.0
93.5
2374.9
Overall width
38.6
980.4
35.9
911.9
31.9
810.3
36.3
922.0
Road clearance
6.0
152.4
5.6
142.2
6.0
152.4
6.1
154.9
Overall height
47.3
1201.4
46.4
1178.6
45.1
1145.5
47.0
1186.2
Saddle height
25.2
640.1
26.0
660.4
26.0
660.4
24.9
632.5
Table 10. Capacities: 2006 Softail Models
ITEM
ALL BUT FXSTD MODELS
FXSTD MODELS
U.S.
LITERS
U.S.
LITERS
Fuel tank (total)
5.0 gal
18.9
4.9 gal
18.5
Fuel tank reserve (carbureted only)
0.5 gal
1.9
0.5 gal
1.9
Oil tank with filter
3.5 qt.
3.3
3.5 qt.
3.3
Transmission (approximate)
24 oz.
0.71
24 oz.
0.71
Primary chaincase (approximate)
26 oz.
0.77
26 oz.
0.77
Table 11. Tire Pressures: 2006 Softail Models
MODEL
LOAD
TIRE PRESSURE (COLD)
FRONT
REAR
PSI
kPa
PSI
kPa
FLSTC, FLSTF, FLSTN, FLSTSC, FLST
solo rider
36
248
36
248
rider and passenger
36
248
40
276
FXSTD
solo rider
30
207
36
248
rider and passenger
30
207
40
276
FXSTS, FXSTB, FXST
solo rider
30
207
38
262
rider and passenger
30
207
42
290
2006 vehicles use Dunlop Harley-Davidson tires only.
Table 12. Tire Sizes: 2006 Softail Models
MODEL
MOUNT
SIZE
NUMBER
FLSTC, FLSTF, FLSTSC, FLST
front
16 in.
D402F MT90B16
FLSTN
front
16 in.
D402F WW MT90-16
FXSTS, FXSTB, FXSTD, FXST
front
21 in.
D402F MH90-21
FLSTC, FLSTF, FLSTSC, FLST
rear
16 in.
D401 150/80B16
FXSTD
rear
17 in.
K591 160/70B17
FLSTN
rear
16 in.
D402 WW MU85B16
FXSTB, FXSTS, FXST
rear
17 in.
D205 200/55/R17
Table 13. Bulb Chart: 2006 Softail Models
LAMP
DESCRIPTION
(ALL LAMPS 12 VOLT)
BULBS
REQUIRED
CURRENT DRAW
(AMPERAGE)
HARLEY-DAVIDSON
PART NUMBER
FL
MODELS
FX
MODELS
FL
MODELS
FX
MODELS
Headlamp
high beam/low beam
1
4.7
4.3
68329-03
68329-03
position lamp international
1
0.32
53436-97
Tail and stop lamp
tail lamp
1
0.59
68167-88
stop lamp
1
2.10
68167-88
tail lamp international
1
0.59
68167-88
stop lamp international
1
2.10
68167-88
Turn signal lamp
front/running
2
2.25
0.59
68168-89
front international
2
1.75
68163-84
rear
2
2.25
68572-64B
rear international
2
1.75
68163-84
Auxiliary lamps
FLSTC/FLSTN
2
2.50
68351-05
Fog lamp international
2
2.92
68847-98
License plate lamp
FXSTD
1
0.37
53436-97
Fender tip lamp
FLSTC/FLSTSC
2
0.10
68193-95
Instrument panel lamps
Illuminated with LEDs. Replace entire assembly upon failure.