Ducati Supersport / S 939 950 & Monster 821 939 1200 1200S SMOG Plates AIS SAS Valve Eliminator Kit Please look at the picture

Please look at the picture above & you'll be able totell by the shape of the adapter if it fits your bike

The solution is to

This set consists of a front brake

they will sit out 2"

This is the standard size that fits the

Ducati Supersport / S 939 950 & Monster 821 939 1200 1200S SMOG Plates AIS SAS Valve Eliminator Kit Please look at the pictureSMOG BLOCK OFF PLATES The AIS SMOG system feeds fresh air into the exhaust to aid in the combustion of unburned fuel. It was designed to improve emissions, but will cause problems with many aftermarket exhausts mufflers. Plates are machined from billet aluminium. Stainless steel bolts & washers, plus a high temperature airbox cap is supplied. Also includes an AIS valve eliminator plug, to fool the ECU into thinking it is still connected & prevent it