Aftermarket silencer for 100/125?

[Carl Hill]

I have an early CMF six-day that had the rear shroud of the exhaust smashed. I cut it off with the intention of putting an aftermarket silencer on the "stinger". Usually use DG on my larger bikes but it does not appear they make one that small. I have seen several others with this mod, wondering what silencer others have mounted?
Thanks
CH