what's the difference bet. a fiberglass and urethane body kits?

 

flexabilty. fiberglass breaks, urethane flexes. just be sure to get the urethane painted wiht flexable paint or it will flake off!

 

the cost of the urethane is alittle high than a fiberglass...

 

but fiberglass is lighter, so it's a trade off. remember yer stock pieces are urethane

 

yeah, the urethane or poly plastic stuff will take a milk jug to it and just bounce back, the composite ones, if they're made strong enough, will survive serious impacts, but the stronger they are, the heavier they are, and plastic is a lightweight material to try to weight match.