This is what the Diamondback site says the Topanga has and I can't find any thing on this bottom bracket . The reason I'm asking is that my bottom bracket has came loose 3 times now . Not the crank arms no problems there. Any information or soulutions to this problem would be great.

Have you tried Lock-tight?

Have you tried Lock-tight?
We will see if it works. But I would still like to know what make / model of bottom bracket this is.

We will see if it works. But I would still like to know what make / model of bottom bracket this is.
Is your bike?

Found some ansers this Bottom bracket and Crankset are specific to each other.
The Crankset is a Truvative 5D Powerspline and will not match up with any other Bottom bracket. Do not know if this is 100% fact but that is the information my LBS got when they called Diamondback.
Also this time when disasembled it was found that the bearings are completley shot.
Diamondback said they would replace the BB no problem but I'm thinking an upgrade is in order any sugestions ??

Found some ansers this Bottom bracket and Crankset are specific to each other.
The Crankset is a Truvative 5D Powerspline and will not match up with any other Bottom bracket. Do not know if this is 100% fact but that is the information my LBS got when they called Diamondback.
Also this time when disasembled it was found that the bearings are completley shot.
Diamondback said they would replace the BB no problem but I'm thinking an upgrade is in order any sugestions ??
Truvativ has not done me wrong. I have their BB in two of my bikes.

Truvativ has not done me wrong. I have their BB in two of my bikes.
Which BB's and which Crankset's are you useing?