How large bottom sprocket in RX mtn??

[lancef53]

Just wondering how large of a sprocket will fit in the RX chaincase, and what it comes with. I got a 1 tooth larger a couple of years ago, but I can't remember what the stock gearing is.

Thanks.

BTW, what gearing works well with 9 t drivers, I am not concerned about going fast, just having some track speed.

 

[Snow Fever]

They come stock with a 40 tooth on the bottom. A 42 will fit, lightest one out there is a Polaris one.

 

[RED]

I put a 43 in mine, the outer chaincase seal will need to be trimmed so the chain doesn't rubbed on the seal. Drove it all weekend at Revy with no leaks.