Chainring Compatability

Goose2k7

Hi people,

I have a SLX crankset on a 2009 Trek Fuel EX8, And its time I changed the chainrings especially the middle and outer Rings. I have been eyeing up some Renthal Ones but i am unsure if these are compatabile with the SLX cranks and whether i can still keep the SLX inner chainring?? :shock:

Any help or advice would be grateful

Thanks

Chunkers1980

usual answer is you need a BCD on the middle and outer rings of 104mm and the inner will be fine to keep as is if it's not worn.

Sometimes you need a slight file on the shoulder of the rings to make fit.

Goose2k7

Me being stupid BCD?????

Chunkers1980

Sorry. Bolt Circle Diameter. An imaginary circle through the middle of the chain ring bolts.

Goose2k7

Thanks for the response.

Just noticed the renthals seem to be for single ring setups??

Does anyone reccomend anything else for a middle and outer??

Cheers

Chunkers1980

I like shimano ones, the ramps and pins just work. The reinforced XT middle I'm on atm has lasted really well, I'd go for that again when it's gone.

cooldad

Deore. Work well, last for ages. Cheap.

davewalsh

cooldad wrote:

Deore. Work well, last for ages. Cheap.

What he said. I've been a little dissapointed at the wear rate on my current SLX, going to replace them with Deore when they're finished.