Hey Maxwell, ITR is 15 lbs. and GS-R 17-18 lbs., closer to 18 I believe. I weighed my ITR flywheel and it came out to 15.5 lbs.
It's an improvement than the GS-R one, but you might also want to consider some in 9-10 lb. range. I currently have the a 10 lb, and I like it, except in traffic. However, it's easy to get used to. I think I had something in t-i.net too on this thread, haha. Sorry posting the same thing twice.
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