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As title really, can you replace a truvativ GXP BB with a Shimano one, or are there incompatabilities?
Apparently not. They look similar but the truvativ one has some kind of floating bearing that is nipped up when the crank arm is bolted up.
They are very easy to get the seals off and repack with grease though if its not totally knackered.
Cheers mtbtomo, the bearings feel rough to the touch when you rotate them by hand. But as you said if the bearings are nipped up with the LH crank arm they may be OK. They dont feel rough when you pedal though.
Actually you can, however you will need some alloy spacers (available from Hope) as the non drive side is a different size.
I think I've done this with and it's worked out ok..
I'd prize the seal covers off with the blade of a stanley knife, flush with degreaser and then pack some more grease in. I got a good couple of months more out of mine by doing that.
Or if its not squeaking/creaking/wobbling etc then ride on till it does maybe?