Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axle Set

Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axle Set
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The Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axles are a tuning option that adds 5mm to the track width on each side of the vehicle. This helps to increase stability over rough terrain, as well as increase steering clearance to allow a wider selection of tire options.

  • Increases width of vehicle by 4mm on each side
  • Increases stability
  • Increases steering clearance
  • Increases tire selection
  • CNC machined hardened spring steel axle
  • Aluminum +4mm spacer, blue anodized
  • Upgrades stock axles or provides a replacement for worn or damaged shafts
  • Fits front and rear
  • Replaces Axial: drive stub axle part of (AXI31609, AXI31610)
  • (2) +4mm Front Drive Axles
  • (2) +4mm Rear Drive Axles
  • (4) spacers
  • (4) shim
  • (4) 1.4 x 4mm thin head screw

This product was added to our catalog on June 30, 2020

Verified Owner
Tuesday, Sep 15 2020 (2 weeks ago)
Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axle Set
These work great. I read wa1210ck review and I think I know what his problem is. If you look at the manuals exploded view for the front axle you will see a tiny "o" ring in the diagram that is not listed as a part. You need to remove this o ring from the stock axle and place it in the HR extended front axle. This will take up any slop in the axle play and works just like stock. Also none of the included shims are needed unless you are using the axle weights. In that case you just need the shims for the rear axles to take up the slop.
Verified Owner
Wednesday, Sep 16 2020 (2 weeks ago)
Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axle Set
Does not work very well. The spacers get stuck on the bearings somehow, causing them to take a lot of force to spin. Motor heats up quickly and it loses all of its torque.
Verified Owner
Wednesday, Aug 5 2020 (8 weeks ago)
Hot Racing Axial SCX24 +4mm Wide Track Steel Drive Stub Axle Set
It’s hard to put in to words what’s going on...

And for reference, this is for my Axial SCX24 JLU.

With the stock drive stub, it spins straight but with the HR +4mm stub, it wobbles as if doesn’t seat well onto the dogbone like the ball cup isn’t radiused properly. When I turn all the way to one direction and give it some throttle, it would constantly wobble back and forth as evidenced in the video but would drive a lot smoother if I were to go relatively straight. Now, it MAY require some shins but The only place I can out any shins are on the opposite side of the stub where I would out the brass spacers. I did try that but that had no effect.

So as of now, until I can figure this out, I'm not sure how to resolve this issue. And yes, AMain CS has already sent me a replacement and the replacement is doing the exact same thing. Maybe my stock steel hubs are machined incorrectly and only matches with the stock hubs? I tested that out and swapped the left with the right and they both fit without issues on either side but when I tried to put the HR stubs, they wobble once again.

The rear, however, hasn't given me any issues...

As of now, I'm not entirely sure what the issue is. I tried contacting HR directly but haven't heard from them yet.

Purchase this at your own risk.