Topic: Help IDing brake master cylinder

[zabzob]

My bike was a bit of a frankenstein when I got it, with the quite common Harley rear rim swap, Vetter fairing etc. Way back when I first made it road worthy in 2012, I remember buying a master cylinder rebuild kit, disassembling the crusty old MC, lining up all the parts, and finding that the piston was completely different. Mine was replaced by something with a built in brake light switch, so there is no pressure sensor in the brake line. That is steel braided right down to the caliper. Anyway, it's leaking a bit, and I'd like to get a proper rebuild kit, but I'm having trouble IDing it. Here are some pictures:

https://i.imgur.com/tbC34Ur.jpg
https://i.imgur.com/184d56O.jpg

The stamping on the bottom is a little hard to make out. It's 2 K 2 and then Ø 14, which I'm guessing means 14 mm diameter. I believe the rubber parts from the rebuild kit I bought fit, and I just reused the piston.

Any help would be appreciated. Thanks!

[bryanj]

Looks like an early gl1000 but i think they are bigger than 14mm dia

[zabzob]

There are a lot that look similar, but I can't even find pictures of another one with the built in switch. Looking at parts fiches for GL1000 and no joy yet. Somebody must know! I guess I don't really need to know the exact model, just which rebuilt kit to get. This might end up with me disassembling it and buying one that "looks right."

[scottly]

The K8 750 master was 14mm, and had a built-in switch. The GL had an 11/16" (17.5mm) master.

[zabzob]

@scottly that looks like it! Ordering the correct kit now.