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Well I just went thru another set of "after market" transmission mounts on my 06 Ruby TJ with the Nth Tummy Tuck. These had only about 300 miles on them and one Level 8-9 trail ride and I really beat on them this weekend.
When Nth took a "vacation" I was unable to get new mounts so I purchased the set from McMasters & Carr (high temp part number 6292K28) about a two years ago, maybe more. These mounts seemed to last well with 33 inch tires. When I went to the 35 inch tires I destroyed the first set after only a couple of trail rides. Since McMasters is close by my office I purchased another set, figuring after 2 years the originals were shot! One thing about these mounts; they are real good in supporting a load (500 pounds compression), but I do not think they have the tensile strength to continuously resist the upward movement from the torque of the engine, evident by my picture. So if you have a Nth Tummy Tuck, IMHO you should get the original Nth mounts. I just installed a set of the Nth tonight, I am getting good at it, took me less then an hour!
E-mail I got from AEV:
Sorry to hear about the 'issues' you've been having with your aftermarket isolators. We (AEV) have not changed the parts since we started selling Tummy Tuckers and as far as I know Nth Degree used the same parts from ...day one. That said I'm not aware of any isolators that have come apart. They will wear and need to be replaced eventually, but they've got an interlocking fail safe built in, so it is very difficult to actually come apart.
We do have isolators available, they run $15.00 and the part number is Nth92019AA.
Hope this helps!

When Nth took a "vacation" I was unable to get new mounts so I purchased the set from McMasters & Carr (high temp part number 6292K28) about a two years ago, maybe more. These mounts seemed to last well with 33 inch tires. When I went to the 35 inch tires I destroyed the first set after only a couple of trail rides. Since McMasters is close by my office I purchased another set, figuring after 2 years the originals were shot! One thing about these mounts; they are real good in supporting a load (500 pounds compression), but I do not think they have the tensile strength to continuously resist the upward movement from the torque of the engine, evident by my picture. So if you have a Nth Tummy Tuck, IMHO you should get the original Nth mounts. I just installed a set of the Nth tonight, I am getting good at it, took me less then an hour!
E-mail I got from AEV:
Sorry to hear about the 'issues' you've been having with your aftermarket isolators. We (AEV) have not changed the parts since we started selling Tummy Tuckers and as far as I know Nth Degree used the same parts from ...day one. That said I'm not aware of any isolators that have come apart. They will wear and need to be replaced eventually, but they've got an interlocking fail safe built in, so it is very difficult to actually come apart.
We do have isolators available, they run $15.00 and the part number is Nth92019AA.
Hope this helps!