Max cog for shimano 105

[gianni]

I'm looking for more gear for my cross build. Can I run a 12-30 with a normal 105 rear derailleur ? Should I source a different rear derailleur?

Any input is much appreciated!

Thanks,

[skijoring]

It should work just fine! :banana: :)
Shimano's gear restrictions are conservative for RD's.

[ColonelJLloyd]

It'll shift it fine provided the RD will wrap enough chain.

[vav]

105 5700 RD with 11-32 cassette. No issues.

https://farm8.staticflickr.com/7422/9673558627_894ba1a811_b.jpg (https://flic.kr/p/fJPvXz)

[oldpotatoe]

I'm looking for more gear for my cross build. Can I run a 12-30 with a normal 105 rear derailleur ? Should I source a different rear derailleur?

Any input is much appreciated!

Thanks,

Yes, No...

[gianni]

Thanks all for the input. I'm going to give it a go. Cheers.