NEW Factory Brembo Completely Assembled 9mm front master cylinder- Works best with a 24mm Brembo caliper UPGRADE we have listed as well! upgraded levers like ARC Renthal ASV work with this item as well! A Light 285 Grams. What the pros use, the best front master available. A great bolt n ride upgrade for all bikes with hydraulic front brakes that use a 10mm Banjo Style mounting Bolt For The Brake Line. Ask If Not Sure For Fitment. Used by the best in the industry for more consistent and stronger front brake lever feel.