bearing colapse in my 2004 rocket 3 gearbox

hi everybody thought i should tell you all i did the london brighton run last weekend and on my way home i noticed a rumbling noise from my drive shaft took it to dealers engine came out when stripped found the output bearing on the gearbox hand started to colapse bearings been replaced bikes running but will it happen again nobody nose so i say to myself can i trust it as this happened after 12000 miles and pampered all the way so if you hear a bearing noise get it checked out asap i contacted triumph they provided parts i payed labour my point is it should not happen at that lower milage?if anybody else out there had a simular problem or am i the first ??????

Def not the first , been way to many reported :?

Your by no means the first mate.

See 13 pages about it here;

But why would it happen again. I thought the bearing failures were due improper installation and installing it correctly would solve the problem. If that is the case, it is odd that Triumph didn't pay for at least some of the labor. They've been pretty good about it in the U.S. when the failure was due to manufacturing error.

Gasket said:

But why would it happen again. I thought the bearing failures were due improper installation and installing it correctly would solve the problem. If that is the case, it is odd that Triumph didn't pay for at least some of the labor. They've been pretty good about it in the U.S. when the failure was due to manufacturing error.

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I think it's his first Mike. Low mileage so took longer to self destruct.

Historically, these "faulty" bearings needed 10000 to 16000 miles before a problem is noticed. I believe there are different issues at fault to these failures.

In the original bikes, circa 2004-2006, the bearings were cheaper non-sealed ones that needed good oil lubrication from the sump. Wouldn't you know, that the oil sump design was changed in 2006. Means to me, the bearings didn't get lubed enough and their quality came through.

The issue with some newer bikes, 2006 and later, were because bearings got installed wrong which prevented them from getting lubed. This lead to even faster failure on the order of 3000 to 5000 miles.

These days I think you can rest a little easier because the bearings have been replaced with higher quality, fully sealed ones and usually come preinstalled with the whole torsional dampener unit so there isn't any danger of bad installation. Took a while for them to get it right but I'd have confidence in the replacement if it was done within the last year or so.

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My Husband BritGuy just had his replaced, Triumph covered it even though it was a year out of warranty.
Your not the first & wont be the last.
Good luck