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Author Topic: Brembo front brake master cylender 696  (Read 1613 times)
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« on: July 15, 2012, 08:03:23 AM »

I'm thinking of replacing the stock front brake master cylinder with a Brembo RCS master but don't know which one is a good choice for the 696. I've seen a 15rcs, & 19rcs. Some sites say the 15 is for single disc bikes & some sites say the 15 will work with dual discs. I don't have a clue on how to evaluate them other then what I'm reading from sites that sell them. Has anyone swaped out there master with a Brembo rcs or know enough about them to help me out ? This is some info. from a site that sells them,
  19RCS or15 RCS ? These numbers identify piston diameter: the 19RCS has to be installed on twin disks bikes with axial or radial calipers but NOT on Floating Calipers, while the 15 RCS can be used on twin disks braking system carrying floating calipers (Naked), and on single disk bikes (motard).
The 15 RCS with 15 x 20 set up works like a 16 x 18 mc, while 15 x 18 equals a 16 x 16 mc.
 From reading that it sounds like the 19RCS is the correct one I'm not sure why.
 Thanks in advance
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stopintime
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« Reply #1 on: July 15, 2012, 01:18:18 PM »

Your 696 coffin master is probably a 16 mm, but those 16 mm can not be directly compared to RCS or other radial masters dimensions. I had a 16 mm coffin on my Monster S2R 800 and changed to a SF master - happy happy happy - although the upgraded master made the smallest improvement to my system - full floating discs and sintered pads made a greater impression on me. I'm saying that maybe the money is better spent on a track day, better tires, suspension tune, ....

YoYoDyne (recommended!!!) can tell you what to do and what parts you need (new brake lines, banjos, tubes, reservoir, mirror bracket, ... )
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252,000 km/seventeen years - loving it
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« Reply #2 on: July 15, 2012, 03:17:17 PM »

Your 696 coffin master is probably a 16 mm, but those 16 mm can not be directly compared to RCS or other radial masters dimensions. I had a 16 mm coffin on my Monster S2R 800 and changed to a SF master - happy happy happy - although the upgraded master made the smallest improvement to my system - full floating discs and sintered pads made a greater impression on me. I'm saying that maybe the money is better spent on a track day, better tires, suspension tune, ....

YoYoDyne (recommended!!!) can tell you what to do and what parts you need (new brake lines, banjos, tubes, reservoir, mirror bracket, ... )

Thanks for info. but I'm not sure how a track day or suspension tune would help me figure out what RCS master would be the best choice for the 696 ? As of now the 696 has 848 forks with race tech springs & revalved by Catalyst Reaction awesome forks for the 696, stock rear shock which suprisingly works quite well with the superbike forks so no need to change that. I also added aprx. 13mm of rear ride height and increased the trail to 100mm, those changes make the 696 handle like a well set up race bike but still plush enough for street use. I've set up more then few race bikes and am very impressed at how well the 696 handles. I'm running Galfer rotors (which took 2lbs of weight off the wheel fantastic improvement) & Galfer sinterd pads. I have the bike weight down to about 380lbs with a full tank and the brakes are pretty damm good as is. But I hate the looks of the stock master and thats the main rreason for the upgrade & I think the RCS will have a more progressive feel then then the stock one. Is the SF master a 19 x 18 or is it something different ? My worry is that a 19 x 18 may have too much power for the 696 ? The 696 will never see a race track so the master cyl. up-grade is just some added bling hopefully with the up side of improving the brake system.
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stopintime
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« Reply #3 on: July 15, 2012, 03:45:17 PM »

The track day comment is just a thought about the value of a master upgrade. Plenty of people have different opinions and love the improved feel. Anyway, you want a new master and that's that.

The SF master cylinder is a 19 mm. If the lever ratio/second number is 18 or 20 mm... I'm not sure, but my guess is 18. With the RCS you'll have a choice of 18 or 20, so it's not important.

Bottom line: RCS 19 will be the one for you.

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252,000 km/seventeen years - loving it
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