SRAM XO inner ring BCD?

[El Nino]

I need to replace my inner ring but have no idea what the BCD is. The SRAM website is of no help. The crankset is an XO (2011/12) 10spd with a 39t outer ring and a BCD of 120. As I am no bike mechanic I don't have the tools to dismantle everything to check what the BCD of the inner ring. Can anyone help?

[PeterF]

As far as I can tell the cranks with a 120 bcd big chainring have a 80 bcd small chainring.

[El Nino]

Sure on that? I don't want to buy the wrong ring.

[PeterF]

Just found this, check the link :-

 

https://www.sram.com/truvativ/products/sram-2x10-and-3x10-chainring-conversionreplacement-kit#sm.00004ntuuh7zdd8avrt145zr3soau

[El Nino]

Excellent, thanks a lot.

[steveO:K]

Yup. Definitely 80.will be 26t.

 

Fairly inexpensive... approx R275 retail.