I wouldn't pay more than $30 or so, the F9's can suffer from split gears, there not hard to fix or, you can replace the axles with NWSL replacements, the axle on the inside of the gear tower can brake away, this can be fixed with a 3mm piece of steel rod or a nail. They both suffer from being under powered. The thing is all these things can be relatively easily fixed if you don't mind fiddling, and kadee's 805's would be fine. cTr...( Choose the Right )
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