Question about 120BCD ring / single ring spider fitting.

harryzed

I had someone ask me a question about a chainset I'm selling, the chain ring is 120BCD and they've asked me the following question.

Do you know if the 120 bcd can be removed amd I can install either a different spider to bcd size or even a single ring spider fitting?

I'm a bit out of my depth with it, does anyone know if this can be achieved?

cooldad

BCD is BCD. The ring has to match the spider. The question however does not make sense.

paul.skibum

Chainrings don't normally have removable spiders - the spider is the mounting system on the crank. 120 BCD is used on SRAM XX cranks I believe and some others - 104 BCD is more typical of mtb applications which I assume this is what you potential buyer wants.

I suggest he shouldn't buy your chainring.

njee20

I suggest he shouldn't buy your chainring.

It's the chainset he's selling.

Which cranks are they? Some SRAM ones (X.0, X.9) have removable spiders so you could retrofit a 64/104mm BCD spider, or a direct mount chain ring. Not an option with XX.

80/120 BCD is on most of the SRAM double chainsets.

harryzed

hey! thanks for the help so far, yeah it's the whole chainset I'm selling sorry!!

It's a SRAM X0 BB30 chainset I'm selling, 10 speed double chainset, 39/26 tooth, 170mm...

I can post some photos of it if that helps? Thanks so far though!! Really appreciated!!

paul.skibum

Apologies - I clearly didn't read that too well.

Then what the others said applies.

Taxi!

harryzed

appreciated, thanks all!!