Table of Contents
This is an old revision of the document!
IH: Suspension
Front Fork Info
1957-1985 Forks
Slider Tube, Damper Tube & Spring
Fork Parts | Length | ||
---|---|---|---|
1957-1985 | Slider Tube | xxxxx-xx | |
Damper Tube | xxxxx-xx | ||
Spring-#Coils | xxxxx-xx |
Slider Lower Legs
Model(s) | Lower Sliders Left Leg | Lower Sliders Right Leg |
|
---|---|---|---|
1953-1963 1) | K/KH/XL/XLH/XLCH | 45948-52 | 45947-52 |
1970 and earlier 2) | XLH/XLCH | 45944-70 | 45946-70 |
1970 3) | XR/XLR | 45952-70R | 45951-70R |
1971-1972 4) | XLH/XLCH | 45944-71 | 45946-71 |
1973 5) | XLH/XLCH Kayaba | 45976-73 w/ disc brake bushings | 45974-73 |
1974 6) | XLH/XLCH | 45976-74 | 45974-73 |
1975-1978 7) | XLH/XLCH Showa | 46024-75 | 46025-75 |
1977-1978 8) | XLCR | 46026-77 | 46027-77 |
1978 9) | XL/XLCH | 46027-77 | 46026-77 |
1979 10) | XL/XLCH | 46027-79 | 46026-79 |
Early 1979 11) | XLS | 45657-77 | 45658-77 |
Late 1979 12) | XLS | 46027-77 | 45906-80 |
1980-1983 13) | All | 45912-80 | 45906-80 |
1984-1987 14)15) | All | 45912-84 | 45906-84 |
Fork Oil
- The MoCo specifies HD Type B or E (and respective equivalents) fork oil depending on year model.
Year Model | Fork Oil Type | Fork Oil Amount (Wet) | Fork Oil Amount (Dry) | ||
---|---|---|---|---|---|
1957-1967 all models | HD Type “B” or equivalent.16) 17) | 3 1/2 fl oz18)19) | 4 1/2 fl oz20)21) | ||
1968-1969 all models | HD Type “B” or equivalent.22) 23) | 4 1/2 fl oz 24)25) | 5 1/2 fl oz 26)27) | ||
1970-1972 all models | HD Type “B” or equivalent.28) 29) | 5 1/2 fl oz 30)31) | 6 1/2 fl oz 32)33) | ||
1972-1978 XR-750 | 20 weight (Ceriani forks) | ||||
1980 XR-750 | 10 weight (Marzocchi forks) | ||||
1973-1978 | HD Type “B” or equivalent.34) 35) | 5 fl oz (148cc)36)37) | 6 fl oz (177CC)38)39) | ||
1979-1983 all models | HD Type “E” (99884-80). 40) 41) | 5 fl oz (148cc)42)43) | 6 fl oz (177CC)44)45) | ||
1984-1987 all models | HD Type “E” (99884-80).46) 47) | 5.4 fl oz (160CC)48)49) 50) | 6.4 fl oz (189CC) 51)52)53) |
For more information on fork oil comparisons, see Fork Oil in the reference section.
Rear Springs Info
1957-1985 Shocks / Springs
Complete Shock and Spring Assemblies 54) 55) 56) 57) | ||||
Year | Model | Left | Right | Standard/ Option |
KH | 1956 | 54500-56 | 54501-56 | Standard |
54500-56A | 54501-56A | Upgrade | ||
XL | 1957-1959 | 54500-56 | 54501-56 | Standard |
54500-56A | 54501-56A | Upgrade | ||
54503-58 | 54504-58 | Option for extra 1“ ground clearance | ||
XLC | 1958 | 54503-58 | 54504-58 | Standard |
XLH | 1958-1959 | 54500-56 | 54501-56 | Standard |
1958-1966 | 54500-56A | 54501-56A | Upgrade | |
54503-58 | 54504-58 | Option for extra 1” ground clearance | ||
1967-1972 | 54501-67 (2) | Low road clearance | ||
1973-1974 | 54504-73 (2) | High road clearance | ||
1967-1974 | 54490-78 (2) | Optional retro-fit to '78 (Showa) w/ Conversion Kit (2)- (54529-76) |
||
1975-Early 1977 | 54504-75 (2) | Standard | ||
54490-78 (2) | Optional retro-fit to '78 (Showa) | |||
Late 1977-1978 | 54490-78 (2) | (Showa) Standard | ||
Early 1979 | 54528-77 (2) | Standard | ||
Late 1979 | 54565-79 (2) | Standard | ||
XLCH | 1958-1966 | 54503-58 (2) | Standard | |
1973-1974 | 54504-73 (2) | High road clearance | ||
1967-1974 | 54490-78 (2) | Optional retro-fit to '78 (Showa) w/ Conversion Kit (2)- (54529-76) |
||
1975-Early 1977 | 54504-75 (2) | Standard | ||
54490-78 (2) | Optional retro-fit to '78 (Showa) | |||
Late 1977-1978 | 54490-78 (2) | (Showa) Standard | ||
Early 1979 | 54528-77 (2) | Standard | ||
Late 1979 | 54565-79 (2) | Standard | ||
XLS | Early 1979 | 54565-79 (2) | Standard | |
Late 1979 | 54470-79 (2) | (Black) Standard |
Shock Conversion Kit 54529-76
- Basically, a new stud kit (one for each side) was needed to retro-fit '67-'74 shocks to the new '78 Showa shock assembly including;
- Upper and lower studs, washers and an outer bolt cover.
1)
1953-1963 HD Sportster Parts Catalog pg 49
2)
1978 HD Sportster Parts Catalog (99451-78B) pg 103
3)
1970 HD XR/XLR Parts Catalog pg 12
4)
1978 HD Sportster Parts Catalog (99451-78B) pg 105
8)
1977 HD XLCR Parts Catalog with 1978 Supplement pg 49
15)
1986-1990 HD Sportster Parts Catalog pg 65
17)
, 23)
, 29)
, 35)
, 39)
, 41)
, 45)
, 47)
, 50)
, 53)
Haynes Service Manual for Sportsters 1970-2010 pg 1.3
54)
1952-1959 HD Spare Parts Catalog for all Sportsters and K Models pg 50-53
55)
1953-1963 HD Sportster and K Model Parts catalog pg 58
56)
1954-1978 HD Sportster Parts Catalog (99451-78B pgs 129, 131
57)
1979 HD Sportster Parts Catalog pg 57