Features:Precision machined from billet aluminum, rust and high temperature resistance. Can be used with single or dual master cylinder systems, provides better front-to-rear brake balance under both light and heavy braking. Fully regulates the front to rear brake pressure by placing the valve in line to the rear brakes. Enhances control under braking and brings a much better overall braking performance. 150PSI - 1200PSI pressure range suitable for motorsport use. Great for professional Race Drivers, Race Teams and most Race Car series world wide such as for Pro-Drift, BDC, BTCC, 750 MC etc. Specifications: Condition: 100% Brand New Material: Aluminum Color: Black Size: 4.5 * 8.5 * 2cm / 1.8 * 3.4 * 0.7in Quantity: 1pc Package Weight: approx.140g Fitment: for most Race Car series world wide such as for Pro-Drift, BDC, BTCC, 750 MC etc.Package List: 1 * Brake Proportion ValveNote: 1. Please kindly confirm the model of your car before ordering to make sure this item is perfectly fit. 2. It is easy to install, but professional installation is always recommended.