Get your grips here: https://www.ergonbike.com/de/product....
GA2, GA3, GE1 Evo, GD1 Evo what's the difference?
Remy Metailler knows them all and explains you the differences.
You would like to know which products are best suited to you or what you need to bear in mind when adjusting the bike components? Take a look at our FAQ page, where we have already answered the most frequently asked questions for you: https://www.ergonbike.com/en/faq
If you don't find what you're looking for there, we'll be happy to answer your questions in the comments.