Help Needed on Master Cylinder Choice

[Suzuki_Don]

It would appear that the 5/8 type round screw-on cap master cylinders are hard to come by so I was just wondering: !!!!!!!!!!!!!!!!!!!

Would it be possible to have my 14mm master bored out to 5/8" and fit the rebuild kit for the larger master cylinder with piston, seals, etc. or would the stroke be different.

Thanks.

[salty_monk]

Look at the newer ones from the EX's. 5/8 bore and mirror mount from memory.

[Suzuki_Don]

I've Finally Installed the XZ10 Master Cylinder

I have just fitted the Kawasaki ZX10 (1988) 5/8" master cylinder to my bike. I rebuilt it with new piston, rubber seals, etc. It pretty much bolted straight on and the two S/S braided lines reached without any problems. I had to buy a double banjo bolt to fit the two fittings to the master cylinder, but be warned if you are fitting a Kawasaki master cylinder the banjo bolts are 10mm x 1.25mm and not 10mm x 1mm pitch as the Suzuki banjos are. The master cylinder also had a threaded portion for the mirror and the original Suzuki mirror screwed straight in to place.

I took the bike for a 160 mile trip yesterday and the front brakes are such an improvement and having the four different settings for the lever adjustment made a real difference as well.

Following are some pics of the fitment:
















.

[pete]

Nice score Don.

I ended up getting a brand new MC from Mikes XS in the US, bit under $110 shipped.

Haven't had the opportunity to test it yet though of course, sort of need a running bike to do that

[Suzuki_Don]

Different Brake Switch

Pete, Another benefit of this master cylinder is the different brake light switch that it uses. It's a micro switch and has a very positive action, not at all like the original switch on the GS bikes.

A few pics:






I know there is a small screw missing which holds it in place, this pic was taken before the installation was complete.

[pete]

Nice Don! I always hated that crappy switch the GS' have.

The one I got is a different switch again, not sure how good/bad it will be but if it proves painful I'll just get a banjo bolt style one.