U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7" Long U-Bolts
(321 reviews)
Price: $47.84
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U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7" Long U-Bolts
Item # APUBR-8
Retail:$61.91
Our Price: $47.84
You Save: 23%
In Stock
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Redline Trailer Leaf Spring Suspension - APUBR-8
- U-Bolt Kits
- Camper
- Car Hauler
- Utility Trailer
- Round Axle - 3 Inch
- 7 Inch Long
- 5200 lbs - 7000 lbs
- 1/2 Inch Diameter
- Redline
Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.
Features:
- Attaches trailer axle to leaf springs
- Includes:
- (4) 7" Long U-bolts (1755892)
- (2) U-Bolt plates for 1-3/4" or 2" springs (117521)
- (8) 1/2"-20 Hex nuts (12N)
- Spring seats required for mounting axle to leaf spring sold separately
Specs:
- Axle diameter: 3"
- Typical 5,200-lb to 7,000-lb axle
- Spring width: 1-3/4" or 2"
- Thread dimensions: 2" long x 1/2"-20
- Dimensions: see below
APUBR-8 U-Bolt Kit for 5,200-lb to 7,000-lb Round Trailer Axles
Video of U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7" Long U-Bolts
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Redline Trailer Suspension - Leaf Spring Suspension - APUBR-8 Review
Today we're going to be reviewing part number APUBR-8. This is Redline's U-Bolt Kit for mounting 5,200-pound to 7,000-pound round trailer axles. It's going to attach the trailer to the leaf springs. It's going to include four 7-inch-long U-bolts. We get that measurement by measuring from the bottom of the cross member to the bottom of the U-bolt post. The threaded portion is going to measure 1 and 7/8ths of an inch.
Each bolt is going to give us a diameter of a half-inch. The distance that we have between the two posts is going to measure 3 inches. Each U-bolt is going to be identical, so they're all going to offer the same measurements. It's also going to come with two U-bolt plates for 1 and 3/4-inch or 2-inch springs. The overall dimensions of one of these plates is going to measure 5 and 3/8ths of an inch by 3 and 3/4 and again, both of those plates are going to be identical, and then it's going to come with the eight half-inch hex nuts that are needed to secure everything. Spring seats are required for mounting the axle to the leaf spring and those are going to be sold separately. This is designed to fit axle diameters of 3 inches, which is going to be your typical 5,200-pound to 7,000-pound trailer axle, with a spring width of 1 and 3/4-inch or 2-inch. That's going to do it for today's review of part number APUBR-8.
This is Redline's U-Bolt Kit for mounting 5,200-pound to 7,000-pound round trailer axles. .
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Did not arrive in time
Customer Reviews
U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7" Long U-Bolts - APUBR-8
Average Customer Rating: 4.8 out of 5 stars (320 Customer Reviews)
Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.by: Lloyd04/01/2022
These seem to be working ok but do not appear to be designed for use with the HD upgraded Moryde greaseable shackle kit that I purchased with them . You can see in the photos that they rub and bind
by: Andy06/19/2023
Working great. Still doing well after a year of full time travel on a 5th wheel RV.
by: Mr. P The Welding Instructor10/18/2020
Excellent product, I used it to beef up the suspension on my welding trailer. It has proven to be a great quality product. Even though local stores carry this kit, I trust a company with the word trailer in its name, and for good reason. I recommend your website to all of my welding students, so if you're ever in the mood to send parts for me to install, test, and review. Please keep me in mind. I'm currently searching for a good 10" electric brake assembly to replace my existing set, and I'm sure I will be reaching out to etrailer for their expertise.
by: Andrew11/29/2023
Everything fit together perfectly. Had a few more nuts in the box than I needed but that is better than being short! :-)
by: Lorin06/10/2020
The u-bolts fit and worked perfectly. I didn’t use the included tie plates, my travel trailer has shock absorbers that attach to the tie plates, I reused the originals. I torqued them to 70 ft. lbs. per Dexter axle specifications. I did clean and paint them before installing. I upgraded my 5400 lb. 4-leaf springs to 6000 lb. 5-leaf springs, which required longer u-bolts.
by: Mike11/03/2023
A+ works great. Fast shipping if I ever need axle again will buy from you
by: Justin08/05/2013
Just installed them a few minutes ago. Great product. I liked the extra ribs in the bottom mounting plates. It seemed to add a great deal of strength. I thought the shipping was a little steep but all in all a good experience. Thank you.
by: Rd05/18/2023
Perfect for my application
by: Harold 02/21/2023
I will always order my trailer parts from this company they were quality and reliable I've had a lot of cars using their equipment and parts keep up the good work
by: Tom 01/12/2023
Nice Robust suspension parts. I'm however using these for Ham radio antenna Mounts, as i can't find u bolts in this size in the Ham world... Cheers..
by: fine product09/21/2019
these u bolts and brackets arrived quickly, installed flawlessly, and seemed to be heavy duty.
i couldn't be happier.
by: Rob03/20/2021
Wow! I have ordered from etrailer for years. Great products. I ordered this on a Tuesday and received it Thursday and shipping was Free!
Painting them now to match trailer and installing them tomorrow. All within a week. Like I said, Wow!
by: Lacy D07/08/2022
I think you screwed up. I did not receive the U bolt kit, I received Part # CT-3000-RK, Repair kit for 2" straight coupler which I did not order. I reported this upon delivery of the wrong part.
Jenny N.
7/21/2022
We recently sent you a new u bolt kit and were wondering if you had any feedback about the product for other shoppers? We look forward to hearing from you.
by: Mitch H04/12/2017
Quality product. Works perfectly on my 1968 Plymouth leaf springs.
by: Bradley 08/28/2022
It was just what I needed for my project. I am converting an old surplus army trailer to a more useful utility trailer. That included changing the axel to lower the higher of the trailer. The axel I had was an old mobile home axel that I shortened. The diameter was smaller than the existing axel and the u bolts were to big. These worked perfect after I modified the mounting plates. Thanks again. I will be using you all again on my next project.
by: Ronzo07/19/2023
Good value and perfect fit.
by: Andrew06/12/2021
Not much to say about this item because it’s only a u-bolt kit, but everything went great. The item came on time
by: Ron 07/11/2023
Product was exactly what I needed and got here pretty quick.
by: Robert 02/11/2023
Super fast service, arrived 4 days early. Packaging was pretty bad but the parts made it and worked great
by: Joe01/13/2023
Just what I needed to complete my stock trailer repairs
by: Robert H.10/12/2017
Excellent people to work with.
I received what I ordered, and in two business days.
Only problem, was I ordered the wrong size leaf springs and U-bolts.
But, returned them, no problems. Full refund, minus return shipping.
Also, re-ordered. Hopefully, the correct size, this time. (I was three hours away from my trailer the first time I ordered)
Robert H.
10/17/2018
Second time was a charm! Good product. Fit perfectly. Thank you!
by: Dave 09/07/2022
mounting kit and new springs in place and performing as expected!
by: Brian10/14/2021
I pull a toy-hauler 5th wheel trailer between Alaska and the lower 48 through Canada twice a year. Much of the road is rough and caused me to break a leaf spring every trip. Since installing a shock absorber system and upgrading from 5-leaf to 6-leaf springs, I have so far eliminated suspension damages on the route.
by: Richard 03/08/2023
Items received were exactly what was ne eded.
by: Bob R.06/28/2017
Wanted to switch to five leaf springs from 4 leaf on my dual axle 27 ft. trailer. Prices were better than I could get in Calif. with addition of free shipping. Parts arrived in three business days, I was surprised at promptness. Staff very helpful after I got my measurements figured out, as old springs were stretched 3/8 inch. Shocks arrived just after I had the springs all installed. Parts were great, only thing I would have liked better was a small instruction sheet on torqueing bolts. Would recommend etrailer to my friends.
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Show More Reviews
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Info for this part was:
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Expert Research:
Jameson C
Expert Research:
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Video by:
Kathleen M
Installed by:
Cole B
Updated by:
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Updated by:
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Jenny N.
4/22/2022
I do have two recommendations for you. The first would be to make sure that the bolts are not over tightened. The locknuts should only be tight enough to limit as much movement as possible without binding anything up. The second recommendation is that Lippert makes that can be used with the Equa-Flex system. It is part # LC64FR. The shackle straps are less thick at 0.212 thickness however they are longer at 3 and one quarter inches.