I ordered these as a replacement for the adapters being used to hold Guardian Bells on the bikes for my MC. I had to enlarge the small hole a tiny bit on one of the tabs, but the thinness of the material does not add any clearance problems on the bolts, and the stainless material does not add any danger of corrosion. They have worked well and are a LOT less expensive than the individual tabs sold elsewhere.
Can't fault fit or quality. Why are adjustment rings so far down the shock body? Have to remove the belt guard to reach them and cannot use the adjustment spanner anyway. For the price I would have liked compression as well as rebound damping adjustment. On setting 2 there is still too much compression damping, barely enough rebound damping but any higher setting setting gives a most uncomfortable ride!
Well, they look great until you notice the top cap is plastic and not metal. Very cheap looking and will get scratched up very easily I fear. As to how well they work, I haven't actually installed them yet as I am still doing restoration work so won't know for a few more weeks.
This was my second experience with Progressive shocks. The first replaced the mega bucks OE single shock on my old BMW K100LT. That worked out just fine and saved me over $300.
This time around my 97 Yamaha Virago 1100 would bottom out over big bumps. I went for the HD cruiser shocks and I am very glad I did. I am a big guy,6'4, 235lbs, and I get a fantastic smooth ride. I can see if you are much lighter in weight, they could be a bit harsh. But the handling is great. The bike is responsive and smooth.
I HIGHLY RECOMMEND.
In my opinion these these shocks are a bit of an improvement on the rides. I don't think it worth the money you spend on. I would have bought more superior shocks from progressive. Didn't notice much of a difference with the 412 series.