U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts
(48 reviews)
Price: $58.90
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U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts
Item # APUBR-35
Retail:$67.90
Our Price: $58.90
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- Reviews (48)
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Redline Trailer Leaf Spring Suspension - APUBR-35
- Camper
- Car Hauler
- Utility Trailer
- U-Bolt Kits
- Round Axle - 3-1/2 Inch
- 8 Inch Long
- 8000 lbs
- 9/16 Inch Diameter
- Redline
Mount your round, 3-1/2" 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) 8" Long U-bolts (11-65)
- (2) U-Bolt plates for 1-3/4" or 2" springs (117581)
- (8) 9/16"-18 Hex nuts (916N)
- Spring seats required for mounting axle to leaf spring sold separately
Specs:
- Axle diameter: 3-1/2"
- Typical 8,000-lb axle
- Spring width: 1-3/4" & 2"
- Dimensions: see below
APUBR-35 U-Bolt Kit for 8,000-lb Round Trailer Axles
Video of U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" 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-35 Review
Speaker 1: Today, we're taking a look at U bolt kit for mounting 8000 pound round trailer axles. This kit attaches a trailer axle to the loose springs. It includes four eight inch long U bolts. That measurement's taken from the bottom of the U portion here out to the end of the threads. Comes with two U bolt plates for 1 and 3/4 inch, or 2 inch springs, and it comes with eight 9/16th inch by 18 hex nuts.Now, spring seats, they're required for mounting the axle to the loose springs. Ours sold separately.
If you need spring seats, you can check some options out at etrailer.com. This kit is designed for a typical 8000 pound axle that has a diameter of 3 and 1/2 inches. We're looking at nice, durable steel construction on this kit. And again, it fits springs that have a width of 1 and 3/4 inches and 2 inches. That's going to do it for today's look at the U bolt kit for mounting 8000 pound round trailer axles..
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Wrong item shipped
Customer Reviews
U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts - APUBR-35
Average Customer Rating: 4.9 out of 5 stars (48 Customer Reviews)
Mount your round, 3-1/2" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.by: Clifford 09/25/2022
Worked well .
by: Gregory 06/11/2020
Nice job "e-Trailer"; received this "heavy" order very promptly; did not expect it so quickly in view of how other retailers/ manufacturers/ on-line businesses are behind in fulfilling orders. Packages (3) came all intact, well packed and product received in great condition. The order included:
> 5-Leaf Slipper Spring w/ Hook End for 6,000-lb Trailer Axles (2)
> U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts (2)
> Tandem-Axle Trailer Equalizer Kit for 2" Slipper Springs - 10-1/8" Long Equalizers (2)
> Dexter Nev-R-Adjust Electric Trailer Brake Kit - 12" - Left and Right Hand Assemblies - 6K (2)
> Mounting Bolts and Hardware for 12" Brake Assemblies (2)
> Bearing Buddy Bearing Protectors - Model 2441SS - Stainless Steel (Pair) (2)
> Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal (4)
> Optronics LED Combination Trailer Tail Lights - Submersible - 40 Diodes - Driver and Passenger Side.
These items are being utilized in the total suspension replacement of a 10,000 gvwr tandem axle trailer. Good sized job for a DIY'er. I expect that it will give my JD 2038 tractor a smooth and safe ride as it is towed/ hauled down the highway.
Thank you.
I would/will strongly recommend to a friend/relative or associate.
( I'd take a picture of the "project", but there is a vicious rain storm occurring outside; perhaps one or two pics to follow at a later time).
by: Fred05/10/2022
Worked well
by: Benjamin01/03/2020
Great product! The steel is of very high quality, not the cheap gold colored stuff that'll snap off as soon as you try to tighten it. The backing plates are good and thick, and after wrenching on them pretty hard with the impact and then a breaker bar, there is no deformation. I'm confident that these will stand up to whatever the road throws at them. As always, very fast shipping and great customer service! Thanks!
by: Dan 04/13/2021
Samatha was very helpful in helping with an alternative of leaf springs i needed. Reached out to me right away with the others i could use, and purchased. Now i can get my trailer back together.
by: Stephen 08/31/2021
Good products, fair prices and decent delivery with sturdy packaging.
by: Daniel 01/11/2022
worked great
by: Scott 11/11/2021
It was exactly what I was looking for at a good price thank you
by: Joey 02/27/2020
Installed on 25’ gooseneck trailer. I’ve had no issues and have put thousands of miles and lots of heavy loads since.
by: Unkldave06/25/2017
The specialist at etrailer walked me through the options and helped me select the perfect fit for my trailer. My trailer went from serious danger on the road to a 10 minute fix! Thanks for your help!
by: Allan R.04/17/2016
I am very happy with this product. everything fit as if the trailer was new. product is Excellent.
Thank you etrailer.
by: Bart T10/13/2021
People were great
by: Jns builders07/29/2015
Exactly as I ordered i will be ordering more products from etrailer great service and fast shipping.
by: Daniel 12/10/2020
Awesome parts, prices, and service. I highly recommend etrailer.
by: John03/08/2021
Direct replacement perfect fit.
by: Robert R 06/02/2019
Fit as they should, quality parts at and affordable price.
by: Maria 12/07/2020
Heavy duty product. Love it!!
by: Merlin12/07/2017
Very fast shipping! even quicker than expected. Heavy duty product. Great communication. Thank you!
by: Nathan.P04/09/2019
They worked and fit great
Comments
Still doing great
Nathan P - 04/15/2020by: Travis09/10/2019
Awesome products and super fast shipping a+++++
by: Robert07/25/2019
Excellent quality and fast shipping. < br>Thanks
by: Norris02/24/2021
REally did the job..
by: Juan05/13/2015
Fast shipping, good product, excellent customer service
by: Lacey10/18/2022
25
48
Show More Reviews
See what our Experts say about this Redline Trailer Leaf Spring Suspension
- Torque for U-Bolt Kit for Mounting 8,000-lb, Round Trailer AxlesThe U-bolts on the U-Bolt Kit for Mounting 8,000 lb Round Trailer Axles # APUBR-35 are 9/16". The torque specs for 9/16" bolts on trailer suspension 65 ft/lbs - 95 ft/lbs. Torque specs depend on bolt size: 1/2" bolts: 45 ft/lbs - 70 ft/lbs 9/16" bolts: 65 ft/lbs - 95 ft/lbs 5/8" bolts: 100 ft/lbs - 120 ft/lbs 3/4" bolts: 140 ft/lbs - 160 ft/lbs
view full answer... - TRAILER SPRINGSFor the large 8000 lb. springs you want to use U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles part # APUBR-35 and for the smaller 3500 lb. springs use the U-Bolt Kit for Mounting 3,500-lb, Round Trailer Axles part # APUBR-1. Thes will give you the u bolts, nuts and the new plates so you will be set.
view full answer... - Replacement Springs for 2020 Grand Design Momentum 351MSince you're looking for 4,000 lb springs I am assuming you have tandem 8,000 lb axles on your 2020 Grand Design Momentum 351M. I recommend verifying this information since the diameter of your axle and capacity plays a role in choosing the correct U-bolt kit and leaf spring. In order to find the correct replacement springs you will need to take some measurements. If you have double-eye springs you need to measure the distance from one eye to the other. If you have slipper springs, you...
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view full answer... - Options For Replacing Broken 7-Leaf Slipper SpringFor a 2" wide by 29-1/2" slipper spring we have two options. The 6-Leaf Slipper Spring w/ Hook End, # SP-161275 rated for 8,000 lbs. (spring capacity of 4,000 lbs., axle capacity of 8,000 lbs.) And the 8-Leaf Slipper Spring w/ Radius End, # SP-284275 rated for 10,000 lbs. (spring capacity of 5,000 lbs., axle capacity of 10,000 lbs.) The quantity of leaf springs is not the point to focus on, the weight rating is. What we have available does not support adding an additional leaf. My suggestion...
view full answer... - Spacing Between Hangers With Slipper Springs for 8,000 lb Axles and Hanger KitI checked for you and when installing the 7-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles # SP-285275 with the Tandem-Axle Trailer Hanger Kit for 2" Slipper Springs - 12" Long Equalizers # APT6SE the distance between the front and center hangers will be 28-1/2", the distance between the center and rear hangers will be 29-1/2", the distance between the U-bolts will be 33" and distance between the center of the axle and trailer frame will be 4-1/2". I made a diagram for you...
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- Raising the Height of a Trailer that has a 3-1/2 Inch Diameter Round AxleThere are no over/under conversion kits for a 3-1/2 inch diameter axle but I can tell you the parts you will need to make one. You will need spring seats for 3-1/2 inch diameter axles, # TRSS350 and a new u-bolt kit # APUBR-35. The new springs will have to be welded onto the axle.
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view full answer... - Hanger, U-Bolt, and Slipper Spring Kit for 8k Trailer AxlesIf you use the Dexter Tandem-Axle Trailer Hanger Kit for 2" Slipper Springs # HAP-105-205-01 that you referenced you'd end up with a height of 4-7/8 inches between the axle center and the frame of the trailer and 8 inches between the tires for most tire sizes. How that relates to your fender to tire clearance really depends on the location you install the fenders. For an 8k slipper spring that is 2 inches wide we have the etrailer # e37SR that would work really well. The hanger kit part...
view full answer... - Parts Needed For Reducing 7,000LB Leaf Springs On a 2021 Keystone Carbon From FlatteningI do have a recommendation for you as switching out all your leaf springs on your 2021 Keystone Carbon 358 is a big undertaking. The SumoSprings Trailer Helper Springs # SS26MV are designed to work on 5,000lb to 8,000lb trailer axles and each set provides 900lbs or capacity at 50% compression. These springs are also progressive so they will help to absorb road shock while also providing support to your leaf springs giving a smoother ride inside your trailer to reduce the odds of damage...
view full answer... - How to Determine Correct Replacement Slipper Springs for Triple Axle Trailer With 8,000 lb AxlesI can help you determine exactly what you need to replace the suspension in your triple axle trailer, although we don't have any type of database which has each part for each year, make and model of trailer that would tell us exactly what you have on your trailer, which means you'll need to do a bit of pretty simple measuring. Since you have a triple axle trailer, with three 8,000 lb axles you will need slipper springs for that axle capacity, for which we have two of that capacity. To...
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Info for this part was:
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