Tony,


If your ASP has 34 mm (1.339") center to center distance, between the exhaust flange bolts, like Webra Speed .61 and OS.60/.61FSR engines, the MVVS silencers will fit it as they come.

There is a choice of Pitts, normal, quiet, tuned pipe and mini-pipe.

If it is a later OS clone, with bolt-through attachment, you will have to look elsewhere.