The xxx4+g uses 1.2" shock bodys with 1.0" shock shafts on the rear and 0.6" bodys and shafts on the front.
this is the exploded parts list.
http://www.losi.com/ProdInfo/Files/x...plodedView.pdf
But the earlier xxx4 not graphite uses 1.2" shock bodys and shafts on the rear and 0.6" shock bodys and shafts on the front.
http://www.losi.com/ProdInfo/Files/l...-explosion.pdf
both these are from the losi site.