Typically the "Mini" refers to the 5.5 inch version, as opposed to the 7 inch. They are both comparable in weight. I believe they are just under 2lbs. The Kryptonite crossbar is a little thicker, so it feels slightly heavier, but the difference is negligible. Your question pertained only to weight, but assuming you are trying to decide between the two, you may want to focus more on the size. Both are great locks when used properly. The Onguard is slightly longer and wider than the Krypto. If you have a thicker framed bike, it may be better for you.