[newrider6]

Hi a newbie here i know it has been discuss here before but i just can't find thread that answers my question...I'm trying to build a new bike all i've got is the frame kit that has a bottom bracket of PF92 and i can only rig this with a 1x10 and 1x11 set-up since 1x11 is out of my budget i will build it to a 1x10 i'm looking at a shimano pf91 bottom brackets but i'm having a hard time which crankset/chainring is compatible for this. can i use a saint or zee crankset but this two only say for 68/73mm BB only. any suggestions for any other brands of BB and cranks compatibility is highly appreciated...Thanks

 

[Slash5]

Any normal 68/73 mm Shimano Hollowtech or SRAM GPX or other similar make crank will work with the appropriate BB.
The PF92 BB is the same overall width as a 68/73 mm external bearing BB.

 

[newrider6]

Thanks slash5!

 

[Slash5]

Only drawback is the new crank will probably come with the external BB and you'll have to buy the right PF BB, sell the external.
If you go GXP, do some research on BBs, lots of opinions here on the best BB.

 

[Rhialto]

If you go with, say, a Shimano BB91 pressfit BB (Shimano BB91 MTB Press Fit Bottom Bracket | Chain Reaction Cycles), you can run any Shimano MTB crankset. I have run XT (3x9), SLX (2x9), and Saint cranks on my pressfit BB. I currently run a Saint 1x10 setup.

You can also run some Raceface cranks and with the appropriate SRAM pressfit GXP unit, you can run a SRAM crank.

I have also experimented with different pressfit BBs: Shimano, Raceface, Enduro, KCMC. I had a good run with the Enduro BB with ceramic bearings but it was relatively expensive and required regular overhauling - it didn't have the best sealing. After trying several different brands, I have come full circle and just buy the less expensive throw-away Shimano unit whenever it needs replacing, which is about once a year in the wet and muddy north of England.

As with all BBs, the bearings will need to be overhauled or the whole unit replaced periodically, depending on what conditions you ride in. If you plan to install and replace the unit yourself I would recommend you invest in the tools for the job. You can make your own install tool easily enough with threaded rod, nuts and large washers (think headset press) but removal is tricky. Removing a pressfit BB can be a nerve-wracking procedure if the fit is tight and you need to hammer it out! The removal tool looks like this:
Park Tool Co. » BBT-90.3 : PressFit Bottom Bracket Bearing Tool Set : Bottom Bracket
The removal surface is small and not easily accessed as it's facing inwards so making your own tool is not obvious.

Hope this helps.

 

[newrider6]

Appreciate all the inputs guys thanks.