wawasonqo Posted Saturday at 08:08 PM Share Posted Saturday at 08:08 PM Hi Folks, According to page 1-11 of the Service Manual, the Outer Diameter of the Piston of the Rear Brake Master Cylinder for the 5th Gen. VFR800 is 17.417 - 17.444 mm (0.6857 - 0.6868 inches). According to the following page, the Outer Diameter of the Piston of the Rear Brake Master Cylinder for the CBR600F4i is 13.957 - 13.984 mm (0.5495 - 0.5506 inches). https://cbrforum.com/forum/f4i-main-forum-11/cbr-600-f4-mastercylinder-bore-diameter-120891/#post1012291 Which is better, and why, for pushing the 3 pistons of the VFR calipers on a De-linked Brake System? Thanks! Quote Link to comment Share on other sites More sharing options...
Member Contributer ducnut Posted Sunday at 03:31 PM Member Contributer Share Posted Sunday at 03:31 PM Nearly all the Honda sporty bikes of that era used the same size master. That’s the one you need, as mentioned in the other thread you commented in. 1 Quote Link to comment Share on other sites More sharing options...
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