Mc21-mc28 crank question

**Mon Aug 19, 2024 3:43 pm » Post: #1 » Download Post**

Hi all
I want to rebuild my crank and I have the 2 bearings
Anyone knows what is the best option for the big end bearings ?
I remember seeing somewhere that I can use crf150 ?

If anyone can help it will be appreciated

Thanks

**Mon Aug 19, 2024 9:47 pm » Post: #2 » Download Post**

Hi,

You need a full set of main bearings which is 3 Koyo bearings.

Wiseco b1059 big end bearings have been used without any issues.

**Thu Aug 22, 2024 3:26 pm » Post: #3 » Download Post**

Thank you

**Wed Aug 28, 2024 12:47 pm » Post: #4 » Download Post**

If this helps: https://t2-r.ocnk.net/product/102