Hello All! I am in the process of rebuilding the topend on my MC21 R for the first time and had a few questions with regards to the Cylinders. Both Fr and Rr Cylinders are stamped "B" and as well as my backup cyl's. Does this mean that they are slightly larger bore than the "A" Cylinder? And would these require the matching B pistons part # 13102-KV3-830 ?
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