98' & Later Clutch in a 1992

[Ohio HD]

I think he's referring to the four studs on the early Evo clutch hub.



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[Burnout]

The first EVOs came with a 4 speed clutch

with the 5 speed came the L84-89 clutch pictured above.
This clutch was a total POS the 4 posts would break off the hub and the hub center was so thin it would split through the keyway

Next was the 90-97 clutch (snap ring style)
the aluminum snap ring retaining portions easily break off

[xlfan]

The earlier style EVO clutch you describe, was splined shaft and was in use from -90 to -97.

The 4-post taper shaft EVO clutch was in use from -85 to -89.