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Archive's Stealth HD U-bolt flip kit fits stock 60mm (2.375") to 2.5" wide springs max, bolts are kept tight to pack to prevent your leaves from rotating out of alignment.  

This kit allows you to remove bumpstops without removing the U-bolts & U-bolt plates and having to repeat torque sequence.

If you buy this kit, email us for a discount when you need replacement U-bolts

Option 3 & 4 Archive Speed bumps are 100% designed by us for:

1) soft engagement

2) max bump travel

3) slowing weight down over more distance for progressive feel

4) no center hole in bump to fill up with water

5) two tough 3/8" bolts to hold bumpstops down

6) High strength Steel (30% stronger than competition)

Note: Spring center bolt threads must be trimmed to a max height of 1/2" above the spring

Kit includes:
(2) HD powder coated U-bolt plates w/ kick out for air bumps, made from high strength HSLA 50ksi steel (30% stronger than mild/A36). 

(4) HD 9/16" round U-bolts (3 1/4" x 8 1/2"), Clamps leaf packs up to 3.5" thick (Trim to fit)