1)the fets are better than an xmods, since they are a 2x2 stack. they can handle a MICRO T motor of 34t but they would pull less amps, i wouldn't go below 38t. it can easily run a Stock R
2) they should be able to handle 8.4v like any other board but lithium(7.4v, 2cells) is the max anybody has ran on the stock board.
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Track car v2.0
fieldfairy2's mini late model
Operation black widow
H-Crawler
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