Ummmmmmmmmm.
You see I'd love to believe that everything that Shimano give the XTR badge is worthy of it.
Take their range of SPD pedals.
I have the a set of 520,540 and 970 ( the 970's are on the Zaskar). Yes they look nice and weigh a little less than the 770's with the 540 and 520 just adding a few more grammes.
When I'm riding I can't tell the diference between the 970's and the 520's.Yet, one is 4 times the cost of the other. The smart man would just buy the 540's or the 770's if a bit more cash was available.
So, when it comes to spd pedals, I think that XTR has little to offer (apart from a few grammes) over the 540's (LX ?)
Check out the cost of XTR cranks vs XT or even SLX. Again a few grammes.They may be stiffer ( would I notice ?). And the cost of replacement rings is astronomical.
Rear mechs look nice, but I still run my M739 on my 9 speed set-up.The M770 shifters do a great job of telling the M739 what to do. Would a 972 rear mech do any better ????
To be fair I rode my mates X9 shifted ,X0 mech set up the other night.If XTR gave me that level of shifting I'd be tempted. The up and down shifting was instant.Despite all being covered in thick mud. :x
Yet, with all the above my M739 STi's,a M739 rear mech and an 8 speed M737 cassette on my Karakoram shifts better that my 9 speed set up.Progress ?
So, perhaps XTR is a step too far, only for those with too much money and who want bling over adequate performance.
Any examples of where XTR really does score ? Cassettes,chain
,front mech