foureyes: Nukeproof Mega, riding AM in the Alps so I’d feel more confident with something holding the chain at the top. You think I’d be OK without?

I’m keen to avoid anything with a BB mount because I may switch back to 2×10 occassionally and it would be a lot of hassle to remove a BB mounted device compared to something ISCG or seatpost mounted.

A Jump-Stop plus bash ring or an inner + outer bash ring setup did cross my mind, but still a chance of the chain jumping out the top, isn’t there? This is my AM bike, often ridden on very rough terrain in the Alps.

Thanks Woody for the Hope info. Looks like a good solution but pricey (£45 for the ISCG or seattube version, plus bashguard or Hope’s integrated chainring/bash). I’ll surely go with this option or a modified LG1+ or G2 Mini if I find a deal on one.

Thanks for the help everyone.

Yeah, CRC is listing 2012 Mega frames in XL, but did they even make those in XL? Nukeproof’s site and the sizing PDF on the CRC page both only list up to XL (18.5″) for 2012. XL is listed on Nukeproof’s site for 2013. Could CRC have made a mistake?