Caliper mount bolt. Left.RWD. Right.RWD. W/O BLACKWING. W/O BREMBO. A Bolt used to mount / lock the disc brake Caliper to the disc brake Caliper guide Pin. A Pin used with a float style Caliper, which mounts the Caliper to a Caliper bracket through a Caliper guide Pin Bolt, allowing the Caliper to slide freely during braking. Disc Brake Caliper Bolt. BRAKE CLPR Guide. mount. support hardware kit. Disc Brake Slide.