Do the stock axles break easy with 37s I have toyos so they are heavy

 

the factory front shafts do have a habbit of losing their c-clips and that ultimately leads to breaks. if you upgrade to chromo shafts, they will help prevent this as not only will they be stronger shafts, they will also come with full circle clips. go easy on the gas and you should be okay with the rears too.

 

It's not a bad idea to swap out the shafts to some better aftermarket one's. Plus installing sleeves and gussets can help strength the axle.