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Designed for dual bowl master cylinders and incorporates an adjustable proportioning valve and a distribution block into one unit. Precision machined from billet aluminum and available with a black anodize or polished finish. Each style features the distinctive JEGS logo. Features a rotary adjustment valve with directional arrows for fine incremental adjustments to reduce or increase the front to rear bias, two inlets from the master cylinder, two outlets to the front brakes and 1 outlet to the rear brakes to distribute fluid to all four wheels. Includes five stainless steel fittings for 3/16" brake line, brake light switch and wiring pigtail. Conveniently mounts in any location. Note: Not designed as a direct replacement for factory style blocks, some line modifications may be necessary.