Replacement plastic cups for SRAM dub (Ai) press fit bottom bracket

Tech Tech - What to Buy
1

I’m trying to find some replacement plastic cups for SRAM DUB press fit bottom bracket as mine as has cracked. SRAM don’t sell these. The only option is to replace the entire bottom bracket (which I’ve done) but the old bearings are still good enough to keep as a spare.

I’ve looked on AliExpress and found similar products, but not the item I am after. Has anyone else looked and had success? For a part that costs a few cents to make and can easily wear and crack, I would have thought there’s a market there.

The cup I am referring to sits on the inside of the bearing.

Thanks,

Andrew

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2

Something like this?

https://www.bikone.com/producto/adapter-kit-from-30mm-to-sram-dub/

https://www.bikechain.com.au/a/spare-parts-2/hope/29mm-dub-bottom-bracket-conversion-kit-3/100001628

I just found this on AliExpress: AU$1.58 | 30 To 29 For DUB 24mm Diameter Bicycle For BB Shaft Bearing Cap Press-in Cover Dustproof Waterproof Road MTB Bike Parts Mountain

3

Thanks John. These look correct. $45 for two plastic cups from Hope!!!

I think I looked at the same AliExpress page but noted the external diameter is 41.9mm, and I measured 39.5mm on my cup. I don’t know if this difference matters.

4

Would try some bike shops, we regularly keep those from worn out BBs.

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If you know someone with a 3d printer you could print these. Sram DUB Dust Shield by Lgrizzly | Download free STL model | Printables.com

6

Pretty sure the Hope ones are Alu, and likely Hope BB only, as that’s what came with my Hope BB. I’m not convinced by them, and think Wolftooth have a better design as their incorporates a rubber o ring.

The Ali express ones seem OK.