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Keeping the axle tight to the springs is key to a smooth, steady tow. This 9/16" diameter U-bolt is built from raw steel that’s lightly oiled to guard against corrosion in storage. It gives your 1-3/4" square axle a firm, reliable clamp point when paired with a U-bolt plate and matching bolt. That solid connection helps keep the suspension tracking true over every mile.
Getting the fit right matters when you’re securing suspension parts. This U-bolt is 5" long with a 1-3/4" inside width, made to wrap perfectly around square axles of the same size. Each leg has 2-1/8" of threading, giving plenty of room to tighten it down securely with the included nuts. It matches easily with a U-bolt plate like part #116308 (sold separately) for a complete setup.
When your trailer hits bumps or uneven ground, you want hardware that stays put. The heavy 9/16" steel and deep threads keep tension locked in place, even under load and vibration. With the right torque, this U-bolt holds the axle tight against the leaf springs so your suspension does its job without shifting or loosening up.
Whether replacing worn hardware or building from scratch, this U-bolt goes on clean with standard tools. The included nuts make it easy to finish the job once your plate and other bolt are in place. For drilling new holes, a 9/16" or 5/8" bit works best, and a little cutting oil keeps things smooth. It’s simple gear that gets your trailer back on the road solid and sound.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we'll be reviewing part number 175130. This is Redline's Replacement U-bolt, with the included nuts for 1 3/4 inch wide square trailer axles. This is used with U-bolt plates to secure the axle to the leaf springs, which are mounted to the trailer frame. It's going to attach with a U-bolt plate, which is sold separately, and an additional U-bolt with the same dimensions, which is also sold separately. Each side of the U-bolt is threaded. If we take a measurement of the beginning of the threaded portion to the bottom of the bolt, it's going to give us a measurement of 2 1/8 of an inch. This is designed to fit square 1 3/4 inch wide trailer axles and again, it's going to include both nuts. If we take a measurement of the bolt diameter, that's going to give us a measurement of 9/16 of an inch.
The length that we have from the bottom of the crossbar, to the bottom of the U-bolt, is going to measure 5 inches. The width that we have between the two U-bolt posts is going to measure 1 3/4 of an inch. That's going to do it for our review of part number 175130. This is Redline's Replacement U-bolt with the included nuts. .
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Jason W.
3/23/2018
The trailer hasnt fallen apart in the last year so I guess theyre doing their job. Id buy again if necessary.
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Christian
4/27/2019
Still on my boat trailer no issues!