JJDT Posted July 24, 2017 Share I need to replace the shifter on the old MTB. Looking at shifters saw two types I-Spec B and I-Spec II.What is the difference? Link to comment Share on other sites More sharing options...
Kalahari Vegmot Posted July 24, 2017 Share http://www.bikeradar.com/mtb/gear/article/shimano-i-spec-a-b-and-ii-mounts-explained-44410/ Link to comment Share on other sites More sharing options...
Mr lee Posted July 24, 2017 Share I spec II mounting is at most 2 years old and initially came out on the XTR9000 and XT8000 series and then around 6 months thereafter on the SLX7000. Now available on the recently updated Deore M6000. If your bike is older than that and did not come with the above spec'd components then it is more than likely I spec B or even the much older A Link to comment Share on other sites More sharing options...
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