New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
John, your bike’s windshield has a healthy rake to it. I’ve found that is the best way to deal with buffeting. However, Rifle shields are wider, available in various standard or custom heights and various tints. Their hole drilling is perfect and delivery, prompt. For not much money, you can have a shield that exactly meets your needs.https://rifle.com/Motorcycle-Windshields-Motorcycle-Fairings-Motorcycle-Parts-Accessories-for-2008-Moto-Guzzi-California--Vintage/B5530.aspx
What’s the difference between a Cal Vin and a Jackal?