Alternate front master cylinder and rebuild kit - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 12 (permalink) Old 07-11-2015, 06:42 PM Thread Starter
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Alternate front master cylinder and rebuild kit

I located an alternate, non-Triumph front brake master cylinder and rebuild kit. This is for the single disk bikes with 11mm front master size. I measured the Triumph and Honda bits, I am 99% sure these Honda kit will work on the Triumph unit. Below are pictures of the components and measured sizes. I used a Mitutoyo ABSOLUTE 500 series caliper, I literately trust this caliper with my life

This unit is manufactured by Nissin, same supplier as the original Triumph part. There are several external differences but the inner workings are the same. Fitting to bike was not an issue, the front brake lever looks like the original Triumph parts but is slightly different. I'm working on modifying the cheap chrome adjustable levers I have installed.

Honda part number for master assembly is 45510-MGF-305

Honda part number for rebuild kit is 45530-MN9-305

The rebuild kit is half the cost of the one sold by Triumph and readily available at my local Honda shop.

Triumph measurements:







Honda on top, Triumph on bottom



Honda measurements:







Benefits to having the Honda unit, I can see the fluid level while bleeding the brake, rather than getting up and going around the bike to look. There is a small shield installed in the reservoir that keeps the fluid from squirting out while bleeding, no need to re-install the cover while bleeding. Very helpful!

Why did I go this route? My original unit was damaged beyond repair. All the correct ones I found for sale on eBay were damaged and pretty expensive. The used Honda unit with low miles and lever was very cheap (37$ shipped) and in great condition. I took a gamble and it seems to have paid off. The main take away here is that the Honda rebuild kit will work with the Triumph unit and it's half the cost of the Triumph rebuild kit.





Any questions?

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Last edited by Rollinslow84; 07-12-2015 at 12:15 AM.
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post #2 of 12 (permalink) Old 07-12-2015, 04:21 AM
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Nice one Rollins, and thanks for the pics and info . Don't know how I missed this thread!

Does the Honda have a matching clutch master? I don't think I could live with two different parts on my bike - I'd be constantly looking at them grinding my teeth .

EU politicians have just been informed that breathing air leads to certain death in 100% of all cases and are working hard to find a way to ban breathing in order to protect all EU citizens.
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post #3 of 12 (permalink) Old 07-12-2015, 04:57 AM
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Quote:
Originally Posted by ArferBrick View Post
I don't think I could live with two different parts on my bike - I'd be constantly looking at them grinding my teeth .
same here, had to change the clutch one as well when i went to a square 5/8 brake for the 4 pot brembos

nice bit of research Rollins.. is the brake light switch the same ?
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post #4 of 12 (permalink) Old 07-12-2015, 11:31 AM Thread Starter
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There is a matching Honda unit that might be used for the clutch but it is a 1/2" size bore. The Silverwing is a touring scooter and the rear brakes are on the left hand handlebar controls. Our original clutch master is 14mm. If I find one cheap enough ill buy it and try it out.

The brake light switch is basically the same. The mounting is the same but the Honda piece has the terminals slightly farther apart (no issue) and the body is a little bit longer. I'm using the Triumph switch because it works and I wanted to preserve the low mileage Honda switch.

Up next for research will be the Honda brake caliper seal fitment.

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Last edited by Rollinslow84; 07-12-2015 at 12:01 PM.
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post #5 of 12 (permalink) Old 07-12-2015, 02:34 PM
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post #6 of 12 (permalink) Old 07-12-2015, 02:57 PM
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I just ordered this one from a mob called "Square deals online Triumph Emporium" in England -

http://www.squaredeals-ltd.co.uk/thu...kit-6845-p.asp

I believe it's the Tourmax MSB-108 kit, but I'll know for sure once it arrives. They state that it's Tourmax but not which part number.

They also offer an original "Triumph" master cylinder overhaul kit for twice the price.

It's not a bad find actually, they have lots of interesting stuff for our bikes, I also ordered a few other replacement parts for the front caliper and a seal overhaul kit. The whole order came out cheaper than the what it would have cost for just the original M/C kit if I'd ordered it from my usual source.

They also list a Billet 6-pot that also comes with a TÜV certificate! Quite pricey at 350 quid, but it might be an option for someone over here who wants to (legally) update their front brake.

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post #7 of 12 (permalink) Old 07-12-2015, 04:41 PM Thread Starter
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Glad I can help. I'm not a cheapskate I have four bikes I ride hard and need to maintain I save money where I can

The Triumph unit as you can see based in the measurements was wore in pretty good. I don't have the service limits in front of me but the Honda unit is working much better. Rock solid brake lever! going to give it a week and bleed it again. The 1997 Triumph unit had 13,000 miles on it and a hard firm lever only lasted a day after bleeding.

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post #8 of 12 (permalink) Old 07-12-2015, 04:43 PM Thread Starter
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What are the details on that part number?

Who makes it?

How will it help us?

He who dies with the most toys wins!

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post #9 of 12 (permalink) Old 07-12-2015, 05:46 PM
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Quote:
Originally Posted by Rollinslow84 View Post
What are the details on that part number?

Who makes it?

How will it help us?
That's the Hond part number for the 14mm clutch master cylinder repair kit. Looks genuine Honda part to me.

There are cheaper alternatives such as Tourmax MSC-101. That's the one what use when I rebuild my master cylinder.

Sorry for the confusion. Maybe I should have been more informative.

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post #10 of 12 (permalink) Old 03-15-2017, 06:42 PM
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[QUOTE=Rollinslow84;6644946]I located an alternate, non-Triumph front brake master cylinder and rebuild kit. This is for the single disk bikes with 11mm front master size. I measured the Triumph and Honda bits, I am 99% sure these Honda kit will work













Honda part number for rebuild kit is 45530-MN9-305

The rebuild kit is half the cost of the one sold by Triumph and readily available at my local Honda shop.

Now you can be 100% sure. I just installed the honda kit in my 08 T100 front M/C, perfect fit. THANKS for your post.

R.
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