We’re no stranger to manufacturing a wide variety of off-road axle shafts. From the humble beginnings of the 26 spline Suzuki Samuari to the more modern 45 spline gun-drilled Ultra4 racer, if there’s a need for something stronger, something more capable, we’re in our comfort zone. So it would come as no surprise when rock crawling legend Tracy Jordan calls us up needing a portal axle shaft not yet invented, we’re full steam ahead.

Portal box axle shafts are traditionally designed around CV joints. There’s some good reason for that, many of these OE style applications depend on that constant velocity for rideability and handling. Moving over to the rock crawling world though, needs change. Serviceability, strength, and steering angle play a bigger role for those looking to tackle the planet’s toughest terrains. So, to take Tracy’s family build to the rock crawling level needed, we designed an end-to-end axle shaft solution to work flawlessly with his H1 Portal Boxes. Enter the Spidertrax Ultimate H1 Portal Axle.

We have designed, manufactured, and of course added to our online store, an axle shaft assembly to take your H1 Portal Box to the next level. Our billet one-piece stub shaft fits perfectly into an H1 Portal Box, with two inner axle shaft options to complement those popular housings & diffs — the Toyota 30 spline and the Ford 31 spline. Connecting the stub and inner axles is a specifically designed CTM 45 Series u-joint, sized like a 1350 OE joint, that completes the assembly. All said and done, this is the strongest, most serviceable, H1 portal axle shaft assembly that packs an unmatched 50° of steering.

Learn more by heading over to our Products page.