I was looking at stuff today and I see Starbike are selling Herbie chainglider as separate front and back parts.
So this means you have a better chance of getting the exact size you want and if you want to upgrade to a different size cog then it may make it a little cheaper to do so.
http://www.starbike.com/en/hebie-chainglider/Just thought I would share this info.
Peter
