Brembo MC on Honda

jc34
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jc34
Edited Date/Time 11/1/2020 6:41pm
Why is this not a more widespread mod? I have a 2003 cr250r and I've done everything but spending 250 on an oversized rotor kit.

I picked up a used KTM SX front MC on Ebay, bolted it up and bled the system. Holy Holy. What a difference in both feel and power.


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FWYT
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FWYT 10/28/2020 12:36pm
10/28/2020 12:36pm
No kidding? Just from the master cylinder?
kb228
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kb228 10/28/2020 12:49pm
10/28/2020 12:49pm
It is common for people to switch the newer honda mc and brembo. Havent done it myself but have heard nothing but good things about doing it
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Dynamic_Matt
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Dynamic_Matt 10/28/2020 4:01pm
10/28/2020 4:01pm Edited Date/Time 10/28/2020 4:05pm
For anyone interested in this there are two different size pistons used on the Brembo master cylinders. I forget which years/models were which size. But there are 9mm and 10mm size pistons. I "believe" the 2004-ish or older range had the 10mm pistons. Would need to verify this statement.

9mm - A bit softer feel feel at the lever, yet provides the highest braking pressure.
10mm - Much more solid/hard feel at the lever, provides slightly less pressure than a 9mm.

9mm vs 10mm statements are only true if the line is bled correctly! Smile

Plenty of used ones floating around on ebay that need a good scrub and possibly a lever. Happy hunting!

Pick yourself up this if you want brakes bled easily.

https://www.amazon.com/Mityvac-MV6835-Automotive-Accessories/dp/B0015PO…


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jc34
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jc34 10/28/2020 5:48pm
10/28/2020 5:48pm
FWYT wrote:
No kidding? Just from the master cylinder?
Yea, major difference from the 2003 Nissin unit.

I have no idea what year the MC I bought is. Honestly could care less at this point after this major $60 upgrade.
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FU2
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FU2 10/28/2020 10:01pm
10/28/2020 10:01pm
jc34 wrote:
Why is this not a more widespread mod? I have a 2003 cr250r and I've done everything but spending 250 on an oversized rotor kit. I...
Why is this not a more widespread mod? I have a 2003 cr250r and I've done everything but spending 250 on an oversized rotor kit.

I picked up a used KTM SX front MC on Ebay, bolted it up and bled the system. Holy Holy. What a difference in both feel and power.


Imagine how the crf 2020 complete nissin front brake assembly does his job on a cr250.
jc34
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jc34 10/29/2020 6:36am
10/29/2020 6:36am
Probably better? But the MC is $130, need to buy a lever, then a front hose (OEM is $100), then a caliper ($160) and bracket ($87) and all the hardware etc.

Im not trying to win a national, the stock MC was ok for everything but those 5% of situation where youre going way too fast into a turn. I think for $60 and having the ability to 1 finger stoppie and completely lock the front wheel this was a great improvement. Thats all Im saying.
jc34
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jc34 10/29/2020 1:56pm
10/29/2020 1:56pm
Dynamic_Matt wrote:
For anyone interested in this there are two different size pistons used on the Brembo master cylinders. I forget which years/models were which size. But there...
For anyone interested in this there are two different size pistons used on the Brembo master cylinders. I forget which years/models were which size. But there are 9mm and 10mm size pistons. I "believe" the 2004-ish or older range had the 10mm pistons. Would need to verify this statement.

9mm - A bit softer feel feel at the lever, yet provides the highest braking pressure.
10mm - Much more solid/hard feel at the lever, provides slightly less pressure than a 9mm.

9mm vs 10mm statements are only true if the line is bled correctly! Smile

Plenty of used ones floating around on ebay that need a good scrub and possibly a lever. Happy hunting!

Pick yourself up this if you want brakes bled easily.

https://www.amazon.com/Mityvac-MV6835-Automotive-Accessories/dp/B0015PO…


That one looks nice, but this does exactly the same thing for half the price.

https://www.amazon.com/FOUR-UNCLES-Bleeder-Extractor-Refilling/dp/B081G…
llaliberte22 10/29/2020 4:08pm
10/29/2020 4:08pm
Yep, did it on mine too with a 2015 master cylinder. I really like it. Also working on something for the Brembo caliper and complete rear system 😉

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jc34
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jc34 10/29/2020 6:24pm
10/29/2020 6:24pm
Nice, looks like yours is significantly newer. Is there a major difference with the calipers? I honestly dont think I need the front any stronger. My back brake is pretty strong and will lock at will.
llaliberte22 10/30/2020 5:34pm
10/30/2020 5:34pm Edited Date/Time 10/30/2020 5:35pm
Yeah, I don't think think the caliper will add that much, most of it come from the master, but it more for the trick factor that I want to go full Brembo on my CR.


Did you use a KTM banjo bolt or the Honda?
Matt Fisher 11/1/2020 6:41pm
11/1/2020 6:41pm
Dynamic_Matt wrote:
For anyone interested in this there are two different size pistons used on the Brembo master cylinders. I forget which years/models were which size. But there...
For anyone interested in this there are two different size pistons used on the Brembo master cylinders. I forget which years/models were which size. But there are 9mm and 10mm size pistons. I "believe" the 2004-ish or older range had the 10mm pistons. Would need to verify this statement.

9mm - A bit softer feel feel at the lever, yet provides the highest braking pressure.
10mm - Much more solid/hard feel at the lever, provides slightly less pressure than a 9mm.

9mm vs 10mm statements are only true if the line is bled correctly! Smile

Plenty of used ones floating around on ebay that need a good scrub and possibly a lever. Happy hunting!

Pick yourself up this if you want brakes bled easily.

https://www.amazon.com/Mityvac-MV6835-Automotive-Accessories/dp/B0015PO…


jc34 wrote:
That one looks nice, but this does exactly the same thing for half the price.

https://www.amazon.com/FOUR-UNCLES-Bleeder-Extractor-Refilling/dp/B081G…
Half price again:

https://www.harborfreight.com/brake-fluid-bleeder-92924.html?_br_psugg_…
1
jc34
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jc34 11/2/2020 11:15am
11/2/2020 11:15am
Or just learning how to bleed brakes the old fashioned way; pump lever, release bleeder, close bleeder, release lever.
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