It appears the 3-Leaf Double-Eye Spring # SP-072275 is the closest size we have to the measurements on your 2012 Coachmen Clipper 126 Popup camper. This leaf spring is rated for 3,330lbs when used as a pair while your trailer uses a 2,500lb axle. It is 18-5/16" long when unloaded and will extend to 20-1/4" when flat. It attaches using 9/16" bolts.
The Phoenix USA Flexy Flares # PX52-188 allow you to add rubber fender trim to your camper to help keep rain as well as rocks, dirt and rocks... view full answer...
We do indeed offer a replacement U-Bolt kit as part # TR-2200. The kit includes the following:
• 2 U-Bolts
• 4 Nuts
• 4 Washers
I've also provided a photo showing the dimensions of the U-Bolts used. view full answer...