Depends. If it's a frame with the rear caliper inside the rear triangle the rack will usually bolt right on. If it's a frame with an IS mount caliper hanging off the back of the seatstay you will usually need a to use a longer bolt and a spacer to let the brake and rack share a mounting point. If it's a bike with a post mount brake you will probably have to improvise something. P-clamps can be helpful.
Front Brake Caliper: All But FLSTS/FXSTS
Remove the front master cylinder reservoir cap to be able to check the fluid level as the caliper pistons are pushed back into the caliper because the fluid level may rise more than the 1/8 in. (3.2 mm) from the top level and you may have to remove some excess fluid if it does so. THEN loosen but do not remove both pad pins with a 12 point one quarter inch socket. THEN remove both metric caliper mounting bolts and remove the caliper from the front forks and brake disc and pry the pads back to force all four caliper pistons into their bores. THEN once the pistons have been retracted, remove the pad pins and the brake pads.
Although the front and rear brake calipers except FXSTD models, use the same exact brake pad set the FXSTD does not and the FXSTD rear pads have a vertical slot cut into the pads. Be sure NOT to substitute front and/or rear brake pads for the other on these bikes. On the right side of the vehicle the pad with the two tabs installs on the inboard side of the caliper and on the left side of the vehicle, the pad with the two tabs installs on the outboard side of the caliper.
THEN install new pads into the caliper noting that the curved portion of the pad faces to the rear of the bike, and loosely install the pad pins until you hear an audible click from them. THEN re-attach the caliper to front fork, place the caliper over the brake disc with the bleeder valve facing upwards, loosely install the long caliper mounting bolt into the top hole on the fork leg, install the short mounting bolt into the bottom hole on the fork le, tighten the bottom mounting bolt to 28-38 ft-lbs (38.51.5 Nm) and final tighten the top mounting bolt also to 28-38 ft-lbs (38.51.5 Nm) and final tighten the two pad pins to 180-200 in-lbs (20.3-22.6 Nm).
THEN and whenever new pads are installed, before moving the bike pump the brakes until brake fluid pushes the caliper pistons and the pads out and verify that the pads are against the brake disc and then rotate the wheel to ensure there is not any excessive drag between the pads and the disc, check for proper fluid level in the reservoir and if necessary top it up with DOT 5 Silicone base brake fluid only, install the reservoir cover and tighten its screws to 6-8 in-lbs (0.7-0.9 Nm).
THEN and whenever any work has been done on brakes always test the brakes at low speed before operating on a roadway or at higher speeds. THEN test brake system light and if during the road test the brakes feel spongy at all bleed the system and after obtaining a hard lever or pedal road test the bike again.
CAUTION: Do not remove the guide pins or guide pin boots unless a problem is suspected. The guide pins are meant to be sealed for life and are not repairable. Use Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford specification ESE-M1C171-A for re-lubing the caliper slide pins. Other greases can swell the guide pin boots, resulting in contamination and accelerated corrosion or wear of the caliper slide pin mechanism. CAUTION: Use a hub-mount brake lathe if necessary to machine the rear brake disc. For additional information on machining brake discs, refer to Section 206-00 . CAUTION: To prevent interference with rear disc brake caliper operation, install only the correct caliper bolt. 
CAUTION: Do not remove the guide pins or guide pin boots unless a problem is suspected. The guide pins are meant to be sealed for life and are not repairable. Use Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford specification ESE-M1C171-A for re-lubing the caliper slide pins. Other greases can swell the guide pin boots, resulting in contamination and accelerated corrosion or wear of the caliper slide pin mechanism. 
CAUTION: To prevent interference with rear disc brake caliper operation, install only the correct caliper bolt. 
CAUTION: Do not remove the guide pins or guide pin boots unless a problem is suspected. The guide pins are meant to be sealed for life and are not repairable. Use Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford specification ESE-M1C171-A for re-lubing the caliper slide pins. Other greases can swell the guide pin boots, resulting in contamination and accelerated corrosion or wear of the caliper slide pin mechanism. CAUTION: Use a hub-mount brake lathe if necessary to machine the rear brake disc. CAUTION: To prevent interference with rear disc brake caliper operation, install only the correct caliper bolt. 299 views
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