I have a k-tech 20SSK kit fitted to my 2011 forks excellent ! Only 7 months old and not done a great deal. I have the chance of a cartridge kit so mine may be up for sale. The K-tech 20mm SSK kit will cost you between 500-600 quid depending on where you are. If your interested in a good deal talk to me. My idea is to exchange your standard forks with mine to save take them apart etc. Will save you some good money for an excellent upgrade which is worth it's weight on gold.