Tuff Stuff 2303NA brake proportioning valve. This brake proportioning valve will help get your vehicle stopped better while looking good under your hood. Features solid brass construction and is chrome plated. Includes a matching mounting bracket with hardware, two 90 degree brake lines with fittings, and a wiring connector. Works well with disc/disc power brake setups using a 1 1/8" bore size master cylinder with the shallow hole design. Tuff Stuff 2303NA chrome brake proportioing valve disc/disc systems 2303NA We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.