Stock master cbr brakes?
 

Anyone running or even tried this?

Due to a wrenching mishap I need to run this for a minute. Stock vtr master with cbr600f4i calipers.

I assume more lever travel but now I need to test ride it in heavy rain. Which is pretty on par for me.

I just disassembled and cleaned the caliper, scoured the rotors and sandpapered the pads.

Not tried that combination personally, but I would expect you will have a soft lever feel and LOTS of grab on the disc, so be a little cautious until you get a feel for them. The 600F4i calipers have big pistons, and the VTR master is fairly tiny by comparison.

I've been running this for quite a while. Even after getting off the Multi and onto the Hawk, I don't think it's lacking in brake feel or power.

Currently running 954 calipers w/ stock mc (soon to be 954 mc). Has some travel, though not bad. A bit easy to grab too much, so Have to be paying attention to modulation.

Have to be honest, I've never played around with any other combo so I can't give comparative feedback. I have ASV shorty lever and have no issue 2 fingering aggressive stops.

Ok so have to say heavy rain and leaf covered roads are not perfect to bed in brake pads and test brakes.

Cadbury you are spot on. I expected it too, long travel in the garage, but very powerful on the road.

I think my old cbr600f4i master was dying anyway, and I just finished it off.

Does that mean you had an off?

Heck no.

Its just not ideal test riding conditions.

Good!
Sourcing another F4i master?

Yeah, I hate projects that end up with broken parts. The double banjo bolt I bought stripped the master.

I wrote it up on my other thread but it has a ridge after the threads that prevents threading any further (why?) and strips it if you torque it like a regular banjo.

Pretty maddening, but will get another f4i master til I can install the 600rr front end.

Never plan a big upgrade when you have a 2yr old...

I can't remember if the F4i calipers are the same as 954 calipers. I have 954 calipers and went with an '09 CBR600RR radial M/C. Great feel and power.

I actually have an 05 rr master on my rr front end waiting to be mounted.

I couldn't mount it without redoing my whole handguard setup which with temps in the 40s I cant do without.

I have run the standard master with F4i calipers for about 4 years.

Have adjustable levers that help with the travel. When I first did it I was disappointed with the travel at the lever, now I am used to it I love it.

2003-2004 CBR600RR mc 11/16” (17.4625 mm)
caliper pistons 32mm/30mm

2000-2001 CBR929RR mc 19mm
caliper pistons 34mm/30mm

2002-2003 CBR954RR mc 11/16” (17.4625 mm)
caliper pistons 32mm/30mm

2000-2001 RC51 mc 19mm
caliper pistons 34mm/32mm

2002-present RC51 mc 11/16” (17.4625 mm)
caliper pistons 32mm/30mm

1999-Present CBR600F4(i) mc 5/8” (15.87mm)
caliper pistons 34mm/32mm
F4i are a bit different. Here is the list from the Knowledge Base:

Kenmoore I agree, I had to remove my shorty lever since it easily went to the bar.

A stock unit which I know gives way stronger braking anyway, works well.

Don't know if I will swap to the f4i master when it comes. Will test them back to back. This setup does work well.

My ASV is a shorty and is adjustable, so travel was never an issue.

I ran the VTR1000F OEM 14mm OEM MC with the CBR600F4i calipers for a while but did'nt like the travel or initial bite even with EBC HH pads, so first I tried the RVT/RC51/VTR1000 SP1 19mm MC (which matched the F4i MC diameter) but did not like the lack of feel and effort required so Goldy Locks settled on the with RVT/RC51/VTR1000 SP2 17.46 which had been OK if not spectacular.

So Joe, yes the VTR1000F OEM MC can work as you've now determined with the F4i calipers but IMO not ideally.

PS, When I recently installed new EBC pedal "V-rotors" front and rear due to new defective front EBC HH pads ruining the like new OEM front rotors (meant to replace the original rotors which had 104,000+/- miles on them, and which consequently could not be saved even with a rotor ball hone), rebuilt the F4i front calipers and installed fresh EBC HH pads, the well used by me SP-2 caliper suddenly had IMO excessive travel until it finally engaged with poor bite despite very careful bleeding with a Mity-Vac (as I've done dozens of times).

So my question to all is could the excessive lever travel and soft bite I'm having which I thought was with a tired (60,000 miles, give or take) SP2 MC, or instead the rebuilt calipers, or even the new rotors and pads (which I bedded using the 5 stops from 55+ mph in succession, followed by rolling cool down without touching the lever, followed by 2 more such cycles procedure (my standard procedure for new pads and rotors)??

In the interim I've trimmed off the projection that is intended to fix in position the brake hose fitting when the banjo bolt is tightened (necessary with both Tommaselli and Dan Moto 3D clip-ons) on the old but could condition SP1 MC so I could refit and test it to verify is the issue is with the SP2 MC versus the F4i calipers. I've also considered a radial MC and evaluated options in that direction.

BTW, 9,300 miles on the FJ-09 since July and see below for current VTR mileage but that me be the max this year as today we are having our first snow fall of the season, which is very wet, slushy and heavy!

Thanks to this thread I picked up an f4i brake setup for a bike I don't even ride anymore!

You say that like its a wrong thing. I am sure the hawk appreciates it.