[Middleburn Rs7]

Im gonna some middlburn rs7's for my onza t raptor but don't know what crank arm length to get.

whats the difference between 165, 170 and 175? (my current cranks are 170)

and what would be best for me? (i'm 5ft 9) if thats any help

[Newcastle]

yeah me and my mate mite come up seeing as we only live bout 1/2 hour away

[Tigra Mechs]

Yeah there good. They just seem to run smoothly and give you no trouble once you've set it up. I've only had mine about 6 months and its given me no problems.