I want to do a four inch lift on my truck. Wondering if it is cheaper to buy a kit with arms or buy one without and buy them on there own or if at 4 inchs i should use the drop brackets and buy new factory radius arms any advice?

 

i would just get ones with a kit with everything else. then all the other components are made to work with each other

 

Extended radius arms will increase your wheel travel to take advantage of your lift. They'll also help keep your caster near the factory recommendation.

Seems that most of the extended radius arms are at least $500 new (unless you can find a good used pair). Most decent lift kits are about $1k including the radius arms.

I'd recommend getting the arms with a kit.

 

If you really want to do a lift, buy a full lift system. It will give you everything you need. All the parts will be meant to work with each other.