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The Optima Mid transmission can only share the diff gear from the Ultima. All the rest of the gears are optima mid only. Ive been eyeing this conversion; they could also have called it a 2wd conversion for the Optima Mid, 😝. I mean, it looks like it uses more Optima Mid than Ultima components! Anywa...

There are also Gold shocks repros by the brand Xtra Speed. May be the same as Mayonnaise RC products. Long: http://www.ebay.com/itm/Xtra-Speed-Aluminum-Rear-Damper-Set-Kyosho-Optima-2016-RC-Cars-Buggy-XS-OM27002-/381671878040?hash=item58dd6aad98:g:xicAAOSwGIRXYmQ1 Short: http://www.ebay.com/itm/Xtr...