Proper selection of master cylinder bore sizes is the most important factor in achieving correct brake bias. A balance bar is for fine-tuning the bias in the pits or, with the addition of the adjusting cable, by the driver during competition. This high quality unit from OBP incorporates a spherical bearing as the center pivot for smooth action. The included pivot sleeve (1 1/4" OD x 1 1/8" ID x 1 7/16" Long) must be brazed or welded to the brake pedal. Designed for 2 1/4 inch master cylinder spacing. You can change to 2 1/2" spacing by making your own sleeve (1 1/4" OD x 1 1/8" ID x 1 11/16" Long). Remote adjuster cables are available separately.