I would not expect any guarantees on this product. There are to many variables to account for on different rigs, such as caster, lift, tire size, payload, driving style, driving conditions etc. Aftermarket suppliers cannot perform OE style durability testing because of capital constraints. The test will simply be if owners end up getting a long life from the shaft in mixed conditions on various builds. It would not be unusual to expect 50K miles from a shaft of this style. And if it does wear then a rebuild will be simple.
Yes it's something like that , anyway the genuine one is garanted for what ?!!! Don't work
For the moment we use Terraflex Rzeppa , because it's cheap and easy to find , after I try to find a better one .
We have failure with Terraflex on gearbox side , axle side is really rare