Review on 🔧 Maxpow C16-06874 17" Gas Prop - 40 Lbs Per Prop, 80 Lbs Force Per Set - Camper Rear Window Tonneau Cover Lift Supports Struts (2pcs) - C1606874 by David Merculief

Only one strut was bad but you never replace these parts individually. It's a good thing I didn't; While the good side was still working, it was a lot more worn than I originally thought, as shown by replacing the bad side. I took the part number straight from the factory installed blocks, they fit perfectly and have greatly improved my topper's performance. If you think you need to replace one, get two and save yourself the hassle in the future.