Finding brake pads?

[Hinermad]

Where do you folks get your brake pads? I'm a little suspicious about getting them on Amazon because when I search for pads to fit my GS750 the pictures are different.

[Rich82GS750TZ]

Patronize your local Suzuki dealer. If you you don't have one, go to any of the reputable online dealers of Suzuki stuff. I've bought from the 3 below with (relatively) few issues.
partsoutlaw.com
babbittsonline.com
bikebandit.com
there are many more that sell exactly what you need.

[Hinermad]

Patronize your local Suzuki dealer. If you you don't have one, go to any of the reputable online dealers of Suzuki stuff.

The local shop here doesn't carry Suzuki bikes, but their parts department has aftermarket parts that fit. Just picked up my brake pads an hour ago. Thanks!

[bwringer]

The pictures on most websites, even the big sellers, are just generic shots of random brake pads. It is truly annoying.

That said, I've ordered several sets of pads on Amazon with no problems. Figure out the part number you need and do all the usual due diligence to determine whether the seller is legit.

I've also found quite a lot on fleaBay; one advantage here is that you get an actual picture most of the time. And I don't know where they get them, but there are some sellers who seem to be sitting on a giant pile of brake pads in dusty packaging somehow obtained from defunct dealers. Age doesn't really matter for good quality brake pads like EBC if they're still in the package.

[Grimly]

And I don't know where they get them, but there are some sellers who seem to be sitting on a giant pile of brake pads in dusty packaging somehow obtained from defunct dealers.

Deffo the case. As I mentioned in another thread, a couple of years ago I scored four sets of Carbon Lorraine pads for peanuts. They're truly excellent, but require proper bedding-in (which I do anyway). Scanning down through the seller's other listings it was quite obvious he was flogging off the contents of a bankrupt / retired dealer's shop(s).

[Hinermad]

Well, it looks like my issue (minimal braking in the back) isn't pads after all. I'm thinking master cylinder. I had flushed and refilled the brakes late last year and they worked fine then, and even this summer up until last weekend. I bled them today on the off chance it was a trapped air bubble but no luck.

Are there rebuild kits for rear master cylinders?

[Grimly]

Are there rebuild kits for rear master cylinders?

They're usually available, but you might need to get detectorist on your exact master cylinder if it's not a common model. Have a look at the part lists on
https://www.partzilla.com/catalog/suzuki/motorcycle for your model and see if the rear m/c is shared with some other model.