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ok im sorry if this has been answered but i cant find it
but what size bearing is needed for the long side of a b4 top shaft
3/8 x ?
i know that the gear side is 3/8 x 3/16
but the long side is thicker
im trying to get this in my MIP change box
also when i look at the specs online
wich is no help
why does it need a shaft spacer?
any help
thx farmer

nvm
thx farmer

I have original stealth casing in my rc10ce, and b4 topshaft _without_ spacer. Using same sized bearing on both sides and fits fine. Maybe you should get topshaft without spacer?

Not sure on the mip, but using the B4 topshaft in the 2.25, you don't use the spacer. Same bearing size on both sides.