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Honda F4i brake install

Old 01-21-2018, 05:19 PM
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Honda F4i brake install

I am doing a modification, which has been shown on this forum by others, and here are the pics of my project.

Here's the misalignment of the hole. And what I had to do to Dremel it. Notice the middle mark is where the fork leg hits the caliper. The other marks are adjustments that are made to make it fit.
Attached Thumbnails Honda F4i brake install-imag0006.jpg   Honda F4i brake install-imag0011.jpg  
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Old 01-21-2018, 05:25 PM
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Honda F4i brake install (continued)

I used the depth gauge on the Dremel so that I could keep it at the same position while cutting. And what I found that was a pain was that the lettering of the "NISSIN" would sometimes hold the depth gauge on the Dremel and kept it from moving smoothly. So I put masking tape over the lettering.
Attached Thumbnails Honda F4i brake install-imag0012.jpg   Honda F4i brake install-imag0013.jpg  
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Old 01-21-2018, 05:28 PM
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Honda F4i brake install (continued)

The Dremel has a rough finish so I used sandpaper on a drill to smooth it out.
Attached Thumbnails Honda F4i brake install-imag0015.jpg   Honda F4i brake install-imag0016.jpg  
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Old 01-21-2018, 05:33 PM
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Honda F4i brake install (continued)

And for the finishing touches, Home Depot has a paint (Flat Soft Iron) that I used to touch up the aluminum to make it look finished. I sprayed the paint into a plastic disposable lid and then used a fine paintbrush for the detail work.
Attached Thumbnails Honda F4i brake install-imag0022.jpg   Honda F4i brake install-imag0019.jpg   Honda F4i brake install-imag0020.jpg  
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Old 02-04-2018, 09:50 PM
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Hey Bald Eagle,

I am considering doing a full F4i brake swap (MC and calipers and use my braided SS lines). Have you installed and test ridden your set-up yet? I want your opinion on the difference in stopping power before I jump in and do the same mod. I want to upgrade my brakes since, even after cleaning the rotors and bleeding the system, my lever needs to travel almost to the bar to generate any serious stopping power. Not something I want in an emergency or a track day.
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Old 02-05-2018, 05:11 AM
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Can't Stop Me Now....

Hey Skifreak
I have not yet tried out the new setup...the weather here in Mass is not good yet...neither was the football game....but a great game to watch..So I do not have an opinion on the upgrade. I can only go by what the forum has suggested, which has been very good. You can go to Ebay and purchase the whole setup for a Honda F4i, including the master cylinder, for cheap money. I have taken the calipers apart and cleaned them and have replaced the seals for the pistons. A little tricky to get those pistons out, cause you cannot use pliers on the aluminium pistons, it will mark them up, and be an area where it could leak brake fluid oil. I too put stainless brake lines on the original calipers, to get better braking efficiency, but I am going to be on the track as well, and want to have the full braking power when needed. The differences between the VTR 1000 and the F4i brake calipers is huge. My concern with the stainless brake lines and the upgrade, the calipers might be too grabby, so I am going to leave the original hoses that came with the purchase and see how that goes.
I do not have the problem that you have described, you could have a master cylinder problem, you might want to get a rebuild kit.
I hope this has helped.
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Old 02-05-2018, 02:21 PM
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i had the same set up on my yellow bike before i swapped the front end over.. i have to say i liked it, had plenty of feel and was a good upgrade on the standard storms units
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Old 02-05-2018, 02:49 PM
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Good to hear your feedback Fabiostar. I just pulled the trigger on eBay and bought a complete F4i system with calipers, lines, MC and lever for $60. I will bust out the Dremel, mount them with with new EBC HH pads and my SS lines and see how it feels.

It's gotta be better than the current weak and mushy lever I have now, even with SS lines and a thorough bleeding with the MightyVac.
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Old 02-05-2018, 08:16 PM
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I have the CBR954 brakes with standard lines and EBC HH pads. Great feel, plenty of power, and well worth the time/money. I did not like the stock brakes at all.
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Old 02-05-2018, 09:43 PM
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I used the 954 calipers with an '06 CBR600R radial M/C. Great brakes. Not grabby, just powerful. EBC HH pads and Galfer lines.
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Old 02-18-2018, 08:45 PM
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Got my F4i calipers mounted, along with Vesrah RJLs and a F4i master cylinder. I can already tell the lever is firmer. I used to be able to pull the lever to the twistgrip, now it will only go about half as far. Much firmer. I can't wait to test it out, as soon as it stops snowing here.

I painted the calipers silver and accented the lettering in red.
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Old 02-18-2018, 09:07 PM
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The f4i is a great improvement over stock. Even more so with the RJL pads.
I ran that for a while til I put the 600RR front end on. Now the it feels like a whole new bike and the brakes are even better still being radial.
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Old 02-18-2018, 11:20 PM
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I had the same setup and it was a revelation until I started feeling the front end flex under hard braking. I installed a Coerce fork brace and problem was solved and I was very happy.

Fast forward and a zx10 Usd with Triumph 675 radial calipers and the difference was like a sailing boat compared to the starship Enterprise

I think that the CBR 600 F4i is one of the best bang for $ mods that can be done to a VTR.

Get some braided lines and it will be even better !

The calipers look great by the way.
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Old 02-23-2018, 09:25 PM
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Yeah, I already have braided SS lines.

But, winter is still having its way here. I guess I will ski until I can ride the VTR!
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