You can use a cat thermal bypass much cheaper, but you need a thread adapter. Easy sorted!!
If you use a cut down-shortened 1/4in alley key from memory you can remove Bimba easier
If you have access from underneath the exhaust will come straight out and make access to bimba valve easy
If your machine sits on the floor you will have to squeeze in from the side with cut down Allen key
Bimba is easy to service once out
Simple clean out and relube and replace