Honda 919 rear brake bracket for 220mm rotor - Wrist Twisters
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post #1 of 3 Old 05-24-2016, 11:25 AM Thread Starter
Milites Gregarius
Join Date: Mar 2015
Location: Baltimore
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Honda 919 rear brake bracket for 220mm rotor

I'm looking to swap the rear brake rotor on my 919 from a 240mm (stock 919 only) to a 220mm (every other Honda made). What is the correct rear brake bracket to use. I thought the VTR1000 was the correct bracket but it looks like the groove for the swing arm bracket is at a different elevation. Who's done this upgrade and what worked? I'm ready to modify the VTR bracket but I'm hoping someone can save me the effort.

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post #2 of 3 Old 05-24-2016, 12:47 PM
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post #3 of 3 Old 05-24-2016, 01:05 PM Thread Starter
Milites Gregarius
Join Date: Mar 2015
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Thanks for the second link. I had not seen that one but I did see the 1st link. the following looks to be the way that 9nineteen did the upgrade. He modified the 900RR bracket. I was hoping there was a no mods needed bracket. The VTR bracket will work if the "groove" is cut off and moved about 5/8" higher on the bracket.

To keep the caliper holder from spinning, a "tongue and groove" method is used on both the 919 and the 900rr.

The 919 has the "tongue" mounted on the swing arm. The 900rr has the "tongue" on the holder. Take a look at the 900rr holder. . .there is a "groove", not deep but still a groove, right below a threaded hole. This shallow groove will now serve as, you got it, the mounting "groove" on the 900rr holder. This groove's depth can be increased by using an 8mm bolt in the threaded hole. But the best way is to have aluminum square rods welded above and below the groove to deepen (for added strength) and lengthen (for chain adjustment allowance). Cut off the old mounting tongue off the 900rr caliper holder for a clean look.

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