Grinding Noise After Agile Off-Road Driveshaft Install on Lifted 2024 Grenadier — Any Ideas?

[Dokatd]

I don't know if I fully agree with that.
Sure the shaft hasn't ran for 100 000 miles yet so we don't truly know longevity.
But it has been fine for tens of thousands of miles on highways and in high speed desert. My buddy has gone up and down California with it several times. He is heading to Moab for the Grenadier October fest on Wednesday with it. That's a thousand miles on highway.

His rzeppa boot failed which is what made him change. But he is doing extreme angles and articulation on his Grenadier, I suspect it stresses the boot a lot
For him the ai shaft seems to work well.

I think it's too soon to call it out like that.

The agile shaft may do fine in relative terms. But at what cost, I'm not sure anyone knows yet. The oscillation of the joints could cause the joints to fail, the slip shaft could fail or worse the T-case and Diff Pinion could be beat to death over time.

The one cost we know is that it makes noise and that could be pretty annoying for many or most.

I think it would be prudent to label it as off-road only and let buyers choose to to use it onroad. But that's a business decision for Agile.

 

[C-Mack]

Kudos to Agile for at least acknowledging the shaft will not run smoothly and adding those fitment details - so buyer beware. This style of shaft is going to make noise no question about it. It’s not running within its ideal regime hence the resonance/vibration and oscillations. It’s not unheard of for components like this to do the job just fine for a long period of time (especially in low speed regimes) but at what cost as others have mentioned?

That said, I’m not sure spending $1,400+ to introduce harmonics into your driveline especially when the big metal bits the shaft is bolted to at either end are insanely expensive to repair or replace is a good idea. No way is IA going to cover a driveline warranty claim if this shaft has been installed or is involved.

Also, nobody is driving cross country to their favorite off-roading gig at less than 50 mph to try and preserve the shaft so over time the next weakest link in the driveline is going to make itself known if not the shaft itself. Yes, it’s going to take several thousand miles and reports from multiple folks but it wouldn’t be a surprise if after a while we start seeing folks mentioning front diff and transfer case issues who have installed the shaft. Hoping that’s not the case but let’s see how it plays out.