I don't think you'll find anyone who has replaced their Summer Screen or Roadster Screen with a Clearview Shield that isn't a satisfied customer. I'm one of them. The Clearview is much better than the Triumph ones in appearance, quality and function. If you have a Summer Screen - BUY THE CLEARVIEW replacement the correct size for you. It's the cheapest way to end up with the best solution to your problem.
Don't have any mounts - that's a different story.
