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Old 11-28-2012, 04:20 AM   #8749 (permalink)
Rage 01
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Join Date: Oct 2008
Location: Calgary - Canada

I now have 4 thumpers in my hands to work on.
2 are mine 2 are a friends. All 4 have different pistons. Below is a picture of all 4 pistons, can anyone tell me which version is which?
The bottom left one is a steel one, the shaft and the back end are all steel with a hex key access in the end.
The top left one is the same as the bottom one but all aluminum. With a hex key access in the end.
The bottom right one is all aluminum with a set screw to hold the front on.
The top right one is all aluminum with a screw threw the front to hold the front piece on.

Anyone got a clue?
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