Sram GX 500% Deraileur compatable with 520% Lunar casette?

[rossouwdutoit]

Hi guys, has anyone sucessfully used 500% GX derailleur on GX 520% Lunar casette? Or do i have to purchase Lunar deraiulleur? 

 

Thanks in Advance

[thebob]

I've seen on another forum that it does work, but the shift to the 52 tooth cog can be a bit temperamental, especially of the b-tension is even slightly off. You'll also need a new chain 

[rossouwdutoit]

Thank you! Yes i have a new longer chain. I think i will give it a go and if its to tempramental ill take the plunge on a new Lunar derailleur. 

 

Thanks again for the help