Iron Sportster bill of material


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Shifter fork

The two shifter forks come in longer and shorter versions to help set up the tranny.
1952
34291-52

1954-1969
34291-52A

70-78
34291-52B stock
34292-72 +0.020
34293-72 -0.020

1979
34291-52C stock
34292-72A +0.020
34293-72A -0.020
The 70-78 forks should retrofit all other years.

1984
34294-84 +0.010
34295-84 -0.010
34296-84 +0.005
34297-84 -0.005
Not sure if these -94 forks will retrofit.
 Sportster_Trap-doorsThe Iron Sportster trap door assembly holds the mainshaft, countershaft, and shifter mechanism.

Sportster_34291-52B_34292-72_34293-72_Shifter-forks.jpg
A selection of Iron Sportster factory and aftermarket shifter forks. They were a steel weldment from 1952 to 1969, and bronze forging thereafter (info courtesy Dr Dick).
Bottom of first column move down to the left

34291-52 (2)

1952-1953 (two)
3-piece steel weldment

34291-52A (2)

1954-1969 (two)
Sportster_34291-52A_Shifter-fork_1954-1969_epinut.jpg
Sportster 34291-52A shifter-fork, 1954-1969
Stronger 3-piece steel weldment
(courtesy epinut)


34291-52B

1970-1978 (two), will retrofit to 1954, perhaps 1952
Sportster_34291-52B_34293-72_Shifter-forks.jpg
Sportster 34293-72 (left), 34291-52B (right) shifter-forks made from bronze.

34292-72 +0.020

1970-1978, will retrofit to 1954, perhaps 1952

In 1972 Harely introdced longer and shorter forks to help mechanics set up the proper gear spacing.
move up a little to the right move down to the left

34293-72 -0.020

1970-1978, will retrofit to 1954, perhaps 1952
Sportster_34293-72_Shifter-fork_-0.020.jpg
You can use this shorter fork to set up the transmission gear spacing. (courtesy Jan Willem Boon)


34291-52C

1979-1984, should retrofit earlier bikes
Sportster_34291-52C_shift-fork_1979-1984.jpg
Sportster 34291-52C shift-fork 1979-1984, unknown difference to the -52B part. (courtesy Jan Willem Boon)
move up a little to the right move down to the left

34292-72A +0.020

1979-1984, should retrofit to earlier bikes
Sportster_34292-72A_Shifter-fork_+0.020.jpg(courtesy Jan Willem Boon)




34293-72A -0.020

1979-1984, should retrofit to earlier bikes
Sportster_34293-72A_Shifter-fork_-0.020.jpg
(courtesy Jan Willem Boon)
move up a little to the right move down to the left

34294-84 +0.010

L1984, may retrofit to earlier bikes
Sportster_34294-84_Shifter-fork_+0.010.jpg
(courtesy Jan Willem Boon)




34295-84 -0.010

L1984, may retrofit to earlier bikes
Sportster_34295-84_Shifter-fork_-0.010.jpg
(courtesy Jan Willem Boon)
move up a little to the right move down to the left

34296-84 +0.005

L1984, may retrofit to earlier bikes
Sportster_34296-84_Shifter-fork_+0.005.jpg
(courtesy Jan Willem Boon)




34297-84 -0.005

L1984, may retrofit to earlier bikes
Sportster_34297-84_Shifter-fork_-0.005.jpg
(courtesy Jan Willem Boon)
move up a little to the right move down to the left

Aftermarket shifter

Steel casting

Will retrofit to 1954, perhaps 1952
Sportster_34293-72_Shifter-forks-aftermarket-steel.jpgSportster 34293-72 shifter-fork made from steel by an unknown company.

Trock bronze

 (not in production)
Sportster_34291-52B_Shifter-forks-Trock_aftermarket.jpgThis is a bronze aftermarket 34291-52B shifter fork made by drag racer Ron Trock. It appears to be ground to achieve clearance to the gears.
move up a little to the right This is the end.