If you're dealing with a cracked or damaged chassis on your 1/16 scale Traxxas E-Revo or Slash 4x4, this 7022 main chassis is exactly what you need. It's an official Traxxas replacement part so you know the fit and quality will be perfect - no modifying or forcing things into place. The construction feels solid and durable, just like the original. Installation is pretty straightforward if you're comfortable with basic RC repair - just transfer all your components over from the old chassis. Having replaced a few of these myself, I can say the screw holes line up perfectly and everything mounts up exactly as it should. Much better than trying to repair a broken chassis with epoxy or other temporary fixes. Traxxas has been the leader in RTR RC vehicles for years, and their replacement parts maintain that same quality. Whether you're fixing crash damage or just doing a rebuild, this chassis will get your 1/16 E-Revo or Slash back to like-new condition and ready for more bashing action.