SOURCE: 1993 FXR Rear Brakes
If the Master Cylinder BORE size is the same as the bore size required for the caliper you want to replace it with, then YES, you can use your existing Master Cylinder.
SOURCE: Want to replace rear brake pads 1995 Harley Fat boy
Replacing the pads on your Fat Boy is not difficult but you need to pay close attention to the way things are put together as you take it apart. Particularly the little steel pad retainers and the anti-rattle spring. These parts are made and go together in such a way that it's very hard to describe how they go in.
To remove the pads, take the two caliper retaining bolts out of the disc brake caliper. These are usually Torx head bolts. Once you get the bolts out, the caliper simply slides to the front and off of the pads. You'll need a way to push the piston back into the caliper so it will go down onto the new pads. I usually do this with a large pair of slip joint pliers. Make sure you put a rag or something on your calipers so you don't damage the piston or the paint.
Now, look at the way the pads, the little steel pieces at each end of the pads and the anti-rattle spring are in the caliper support bracket. Remove the old pads and parts and install the new pads and parts in the same way. Make sure you put the fiber face of the pad TOWARDS THE ROTOR. Don't laugh, I've lots of people put them in backwards, especially on the back side of the rotor.
Now, carefully slide the caliper back down over the pads taking care not to knock the pads out of there positions. I put a little Loctite 242 (med. strength blue) on the threads of the caliper retainer bolts and reinstall them. Torque them to about 25 foot pounds.
Check the brake fluid level in the rear master cylinder and slowly "pump" the rear brake pedal until the rear brake feels firm. Wait a few minutes and mash the brake pedal one time to the bottom. If it goes down to lower point and then on the next "pump" is higher, you probably need to bleed air from the system.
Open the bleeder valve on the caliper, press the rear brake pedal to the bottom and hold it there, close the bleed valve, and then release the brake pedal. Continue to do this until all the air is out of the system and the rear brake pedal feels firm on the first time it's depressed. While doing this, never allow the rear brake fluid reserviour to run out of fluid. If it does, you'll have to start all over with the bleeding process. Use only DOT 5 brake fluid. DOT 5 and DOT 3 or 4 are NOT compatible and will not mix. If they are mixed, it will cause you a lot of trouble in the future.
Test the brakes before you ride the bike and then again when you first ride the bike at a very low speed. Failure to do this job properly can cause serious injury or death. Brakes must operate properly. Good Luck!
SOURCE: replace rear brake pads
Remove right saddlebag, pull the two caliper mounting bolts and remove the caliper. Do not open bleeder or disconnect line. You will need to push a large screwdriver between the old pads before removing them in order to push the pucks back into the caliper or the new pads will not spread enough to reinstall. Then pull the two smaller bolts from the caliper and the pads will fall out. The pads are different for inside and outside, so pay attention, and remember, after reinstalling, before riding, be sure to pump brake pedal, and it may take a few stops before brakes stop as effectively as before.
SOURCE: i have fxr 1993 and i need to now if i can
Seems to me that you '93 model bike had axles that are 3/4 inch in diameter. The 2000 and later bikes went to a 1 inch axle. This would mean that you would have to machine your swingarm for the larger axle and I don't think there is enough "meat" in that area to do this safely. If he '05 wheel comes with the rear pulley, it too will be useless as the belt was narrower. You may can change the front pulley to match it but that's a LOT of work. Why don't you try to find a rear wheel off of a '90's model Fatboy?
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