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Jose F Hernandez
September 3, 2025
I upgraded my leaf springs on my trailer from a 3 leaf to a 6 leaf. This set fits perfectly on the 6 leaf spring and is heavy duty compared to the galvanized u bolts in other kits. Galvanized bolts are not a thick as this kit and not forged steel. Good kit.SPARKWHIZ Trailer U Bolt Kit for 3,500 lbs. 2 3/8" Round Trailer Axle 6 1/4" Long 1/2" Diameter.
Igor Tkachenko
August 19, 2025
Everything is great! I ordered this in the evening and at 7:30 AM I already picked it up from the locker at Love's truck stop.
michael s.
August 10, 2025
Put these on with no problems. Worked for their intended purpose.
David miller
August 4, 2025
Nice and heavy duty fit good for my trailer axle
Julesof 6
July 25, 2025
Works perfectly!
Customer
July 5, 2025
Worked very well
Leslie
June 25, 2025
The bolts were on the wrong way took us a while to undo them and fix them before we could actually fix our trailer. It was very tedious since we didn’t have the correct tools to do so and had to purchase them.
Curtis Hall
June 8, 2025
Installed the U bolts and when I put the nuts on by hand, they went on about 2-3 complete turns. The nuts have an indent on 2 sides so I figured they are locknuts. After pulling the nuts back off it was obviously the nuts and bolts thread don't match. Also the metal is not rust resistant whatsoever. After first rain there was surface rust. I would hate to see what the ubolts look like after a couple of years.
Cody
June 5, 2025
Good set of bolts for the money.
Jose F Hernandez
May 23, 2025
I upgraded my leaf springs on my trailer from a 3 leaf to a 6 leaf. This set fits perfectly on the 6 leaf spring and is heavy duty compared to the galvanized u bolts in other kits. Galvanized bolts are not a thick as this kit and not forged steel. Good kit.SPARKWHIZ Trailer U Bolt Kit for 3,500 lbs. 2 3/8" Round Trailer Axle 6 1/4" Long 1/2" Diameter.
Igor Tkachenko
March 3, 2025
Everything is great! I ordered this in the evening and at 7:30 AM I already picked it up from the locker at Love's truck stop.
michael s.
February 25, 2025
Put these on with no problems. Worked for their intended purpose.
David miller
February 11, 2025
Nice and heavy duty fit good for my trailer axle
Julesof 6
January 23, 2025
Works perfectly!
Customer
January 19, 2025
Worked very well
Leslie
January 8, 2025
The bolts were on the wrong way took us a while to undo them and fix them before we could actually fix our trailer. It was very tedious since we didn’t have the correct tools to do so and had to purchase them.
Curtis Hall
December 16, 2024
Installed the U bolts and when I put the nuts on by hand, they went on about 2-3 complete turns. The nuts have an indent on 2 sides so I figured they are locknuts. After pulling the nuts back off it was obviously the nuts and bolts thread don't match. Also the metal is not rust resistant whatsoever. After first rain there was surface rust. I would hate to see what the ubolts look like after a couple of years.
Cody
November 15, 2024
Good set of bolts for the money.
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