These adapters are designed to provide flexibility in the mounting ofthe TurboHeader™ Muffler. They will also work with the stock muffler and pipe. It can be positioned and tightened to any position. These adapters are machined from high quality T6 aluminum billet.
These muffler adapters are available in 10mm, 11mm, 12mm, 13mm, 14mm, and 15mm sizes. Each "/90" model has the same inlet and outlet threads.
Last login: 12/6/2013 6:12:PM
Location: LA, USA
I don't have any info on the Enya 120. However, if you have the original muffler pipe for the OS91 and the Enya 120 you can put the threads on top of one another and see if they match. OS and Enya use a .75mm pitch. If they match, then measure the outside diameter of the Enya pipe with a caliper. I suspect that it is a 14x75mm.