Traxxas TRX-4M GTM Aluminum Shock Body. These optional shock bodies are a great way to add a custom look to your TRX-4M rock crawler. Constructed from hard anodized 6061-T6 aluminum these shock bodies can handle harsh conditions and are compatible with standard GTM shock caps and pistons. Just transfer your existing shock hardware over or create a new set of shocks using the TRA9762 and TRA9762A rebuild kits. Package includes two aluminum shock bodies and two pre-load spacers.