Guess it spell checked , it’s a Vipor brand , it comes in 3 sizes to fit most moderns . This was sourced through moto trials west(Canada )  , I’m guessing it’s built in the USA , and I’m impressed at the details such as nice and tight fit , 3 set screws to lock into place , and anodized with the obvious stainless screen . Bike runs and sounds no different .

As I’m the club representative  whom works with the province here for legal riding areas ,it forces me to comply with being legal to the letter of the law and leading by example . 

Looks good on your Vertigo, Sprinter. That is the Mini vipor that Lewisport sells.  Mountain motorcycles here in B.C is now offering some good quality units of their own too but I think they are the slip inside the pipe style.