Hi, I was just woundering if anyone knows if theres any "Big" size difference between a .18 and .21+

I know that there will be some ovbious difference but I've got a good 2cm+ to work with.

Thanks in advance and pictures would be appriated if avibable.

Cheers.

Anyone ?

in what way do you mean?

We need more detail... Do you mean the head diameter wont fit in the truck or what? A .21 and a .28 are almost the exact same size if that's what you're asking.

As far as fitment and mounting profile, they are different. An .18 is 1/10th scale size which falls within the general ".12" measurements. A standard .21 is intended for 1/8 scale and is bigger all the way around.