these are custom made bottom nuts that will bolt to the Wilwood 1 inch master cylinder and bolt to your original metric hardlines that are M10x1.0 thread. Sold a s a pair of 2 pieces.
Many Japanese cars use the Wilwood 1 inch master cylinder as an upgrade. Unfortunately, the Wilwood master cylinder only comes with standard thread, bottom nuts. This means the metric thread hardline that originally Threads into your original master cylinder will not thread into to the Wilwood master cylinder. We made these bottom nuts to accommodate people with this problem. These bottom nuts will work on hundreds of cars with metric thread, including BMW, Nissan Datsun Toyota and more.
