BOCO RC - Steel SOA for Traxxas TRX4 Portal bta The top center is raised

The top center is raised about 20MM to make rocking back and forth easier

This truss will make your plastic axles as strong as possible

Same goes for the stock transmission - it's not horrible but it's geared a bit high and has limited options for gearing

full aluminum case

Utilizing a back of pumpkin screw and the factory upper link spot to mount it's an easy install

BOCO RC - Steel SOA for Traxxas TRX4 Portal bta The top center is raisedBOCO RC Traxass TRX 4 Portal Axle SOA and 4 link adapter. THE BEST fitting and strongest TRX4 Portal Servo Mount available anywhere, period. There is simply no better SOA available for the TRX4 Portals, even my own 1Tenth SOA :) If you're going skinny on your build this is what you need. Form fitting it hugs the existing link 3rd link mount, creates a 4th link slot, and uses one of the diff cover screws for side support. MATERIAL & CONSTRUCTION