Replacing mountain bike bottom bracket?

i have a 2004 cannondale f300 bike and need to replace the bottom bracket. it has TruvatiV IsoFlow, 22/32/42 cranks. what do i need to look at to see if a bottom bracket is compatible with these crancks without having to buy news ones? the old bottom bracket was a Shimano 4-taper.

There are 2 basic characteristics to consider when replacing a BB. The first is the over all length of the BB spindle and the second is the width of the BB shell on your bicycle.

In the good old days (and even sometimes today), you would also have to consider the threading of the BB, but that issue is much less an issue these days. In your case, you do not need to worry about the threading.

The matching taper between the cranks and the BB spindle is typically not an issue, either.

For your best result, you will need to remove the cranks and measure the spindle length and your BB shell (with a micrometer) OR completely remove the BB and take it to the bike shop.

Truvativ is a SRAM brand and their website is pretty good wit information. Truvative and SRAM make bottom brackets, so one of them will likely fit.

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Kids Bike Schwinn Bike Cruiser Bike Road Bike Folding Bike Mountain Bike

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