Walking and Climbing

Grivel extension bars up to size 49/50 available from Needlesports, towards the foot of the page. I'm not sure if they hold stock or order them in but their service is always good.

Or is the issue that you'd have to buy the longer bar separately rather than have the crampons supplied with it....?

Snow & Rock can get hold of extension bars at a cost of £19.95 but this makes a joke of the combined GSB boot crampon offer. I'm not going to stump any money before I've tried the boots & crampons together anyway.  I've tried matching various Grivel crampons to my old Manta boots before and never bought them because they didn't fit, I also found out that the old Manta was never B2/C2 compatible (tho it was a good boot otherwise). 

Cotswold Outdoors are trying to get some to include in the price. Come on Grivel, get your sh** together, how hard is it to make a pressed steel plate available to support sales of your new product!