I just installed these a few weeks ago. I got 2 80mm bolts and reused the 2 100 mm that came off the stock points because the bolts were $7.50 each locally. I saw other comments that said the 100's we're too long to fit but that is not correct. Make sure to get grade 10.9. Also double check the thread pitch. I believe they are fine thread 1.5, not coarse. I was able to find these at my local ACE hardware and one of two old school hardware stores in my area. One had only coarse thread in that size.