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as I recall Rock river used to build them as well as Chris Aldredges dad. I built a couple back in the dayout of two small wheel swingers. It is very easy to do, sleeved together with a billet chunk inside. just need an Aluminimum welder. I used to have detailed pics of the process but I cannot find them.
I still have one on my TTR 150 with YZ suspension
also on the inside of the arm I drilled a 1/2" hole on each part that was also plug welded for strength.
you can find stock small wheel swingers on ebay for like $20 all day long.
The Shop
Over here in nz we had both small wheel and big wheel 85cc yz and kx too in the 90s
I know that your super minis are 100-112cc ish size but was unsure what else was changed
Thanks
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