Surly Stanless Steel Track Lockring 1.29 x 24tpi

Our Track Cog Lockring was designed in conjunction with our Track Cog, and as such, they go together like hamburgers and hot dogs. It’s now a full 5mm thick, plus a lip (0.65mm extra) to maximize thread contact on all compatible hubs. Fits English lockring threads (1.29” x 24tpi LH), and is compatible with standard ISO-threaded (1.375” x 24tpi) hubs.