I have a complete Magura front brake set-up for sale. These are the 4 piston calipers that Russell Karting sells, they have parts available. This will include the master cylinder, brake lines, calipers and rotors. They do not leak but have been sitting a while and will need pads and a good bleed job. I’ve been told they have a lot of stopping power and from looking at the design I have no doubt that they work well. I am asking $350 plus shipping. Call/text Taylor at 620-757-1981 or email firstname.lastname@example.org for pics or more information. Thanks for looking and keep on karting!