Rebuilding Front Master Cylinder

So i need to rebuild my master in the front, but if i search ebay for a rebuild kit it seems like the cylinder that moves on the inside is short it some pictures and long in others.
For a '83 XJ900RK will this work or would i need the short one?
http://cgi.ebay.com/ebaymotors/Yamaha-X ... _500wt_956


PS: I first tried to post this link in the testing zone. Good Job on the forum guys. Everything seems pretty hassle free. And i love the search option.

 

The eBay listing doesn't give part numbers, so you have to trust the guy. Do you?

According to the fiche, your bike takes Yamaha pn 4K0-W0041-00-00, but I can't tell you if it's "long" or "short."

From the XJ4Ever catalog:

HCP3032 OEM front MASTER CYLINDER REBUILD KIT for all non-North American XJ550 models, all 1982 XJ650RJ and RJC Seca models, all XJ650 Turbo models, all non-North American XJ650 models, all XJ700 models, all XJ750 Maxim and Midnight Maxims, 1984 XJ750RL models, and XJ900RK Seca models.
$ 42.95

HCP1696 Aftermarket front MASTER CYLINDER REBUILD KIT for all non-North American XJ550 models, all 1982 XJ650RJ and RJC Seca models, all XJ650 Turbo models, all non-North American XJ650 models, all XJ700 models, all XJ750 Maxim and Midnight Maxims, 1984 XJ750RL models, and XJ900RK Seca models.
$ 32.00

If you get one from chacal you can be sure it will be the correct one.

 

Buy the kit from chacal. He carries pretty much everything you will ever need for your bike.

 

Out of curiosity...why are you rebuilding it?