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  • NRS LoPro Frame Fittings

NRS LoPro Frame Fittings

$24.95

  (10)   |  Write a Review   |  Ask a Question   |  15 Questions

Item: 91028.02  |  Product Details »

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The LoPro Fitting is the heart of the NRS frame system, allowing you to configure your frame however you choose. Now in hot-forged aluminum, they're stronger and lighter with a polished, streamlined finish.
  • The NRS LowPro Frame fitting secures cross members and frame accessories to our 1 5/8" OD frame pipe.
  • Forging the aluminum aligns the crystalline structure of the metal, creating a much stronger LoPro than the older, cast version.
  • Because of that extra strength we're able to slim down the profile and hollow the shank, making it 25% lighter while still being stronger!
  • Molded ridges on the gripping surface provide increased holding strength on high-torsion frame accessories like casting platforms, thigh bars and deluxe foot bars.
  • The LoPro fitting includes a coined (flattened curve) U-bolt, two washers and two nylon lock nuts, also a 5/16" x 2" bolt and nylon lock nut for attaching the LoPro to frame pipe.
  • If you're swapping out the new forged LoPros for the older cast ones on your frame parts, be aware that the LoPro will not have holes drilled for the bolt that affixes it to the frame pipe.
NRS frame parts that include LoPro fittings are manufactured here by our skilled Frameshop craftsmen, using specialized lathes, jigs, hydraulic benders and drill presses. For best results we recommend that you only attempt assembling your own frame parts from frame pipe and LoPros if you have good metal shop skills and equipment. If you have specific questions, please give us a call.

Product Reviews

  (10)
Overall Length: 5 1/4"
Shank Length: 2"
Shank outer diameter: 1 3/8"
Fit: Saddle fits pipe with 1 5/8" outer diameter
Saddle Height: 1/2" above bar
Weight: Single with hardware is 0.8 lbs.
Material: Hot-forged 6061-T6 aluminum alloy
Components:
  • 1 - LoPro Fitting
  • 1 - U-bolt with nuts and washers
  • 1 - 2" Bolt with Nut

REVIEW SNAPSHOT®

by PowerReviews
NRS LoPro Frame Fittings
 
4.3

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

89%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

No Best Uses
    • Was this a gift?:
    • No (7)

Most Liked Positive Review

 

Improvement over the Sand Cast Fittings

The 4 fittings I drilled were virtually identical. No longer will I need fittings for every piece of tube I own. I will Drill all mine in the future to maintain a...Read complete review

The 4 fittings I drilled were virtually identical. No longer will I need fittings for every piece of tube I own. I will Drill all mine in the future to maintain a 1.400" bolt spacing from the lip. Had to add a couple of undersized drills to insure the backside hole didn't walk off.

VS

Most Liked Negative Review

 

I would not buy this product again.

So glad I did not buy these to build my entire frame. I have attempted to hand file the male component for 1 hour approximately to fit into 1.25 Sched 40 T6061 still does...Read complete review

So glad I did not buy these to build my entire frame. I have attempted to hand file the male component for 1 hour approximately to fit into 1.25 Sched 40 T6061 still does not fit.

Unless I order a prefabbed component from NRS I will never use a LoPro again. These fittings work fine when you buy NRS components, but don't fit at all if not.

Had the product actually fit I am sure I would be saying positive things as almost all of my components have been 4-5 stars with NRS.

Reviewed by 10 customers

Displaying reviews 1-5

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4.0

Perfect for attaching frame parts to 11/4 inch alum pipe

By JJ

from Hamilton Mt

Verified Buyer

Comments about NRS LoPro Frame Fittings:

Can add pieces to frame with out having to dismantle frame like when you are using "T's". When tightened the fitting will not slip. And the fitting will not vibrate loose like T fittings with set screws

Service and delivery comments:

NRS service is outstanding

  • Was this a gift?:
  • No
 
4.0

Great coupling to tie into an existing crossmember

By JJ

from Hamilton Montana

Verified Buyer

Pros

  • Easy to install, convenient, durable

Cons

  • Pricy but then you get what you pay for

Best Uses

    Comments about NRS LoPro Frame Fittings:

    NRS support is outstanding

    Service and delivery comments:

    Service is exceptional

    • Was this a gift?:
    • No
     
    2.0

    I would not buy this product again.

    By evan

    from seattle

    Pros

    • Durable

    Cons

    • Dont fit
    • No instructions
    • require lathe or tedious filing
    • require modification

    Best Uses

      Comments about NRS LoPro Frame Fittings:

      So glad I did not buy these to build my entire frame. I have attempted to hand file the male component for 1 hour approximately to fit into 1.25 Sched 40 T6061 still does not fit.

      Unless I order a prefabbed component from NRS I will never use a LoPro again. These fittings work fine when you buy NRS components, but don't fit at all if not.

      Had the product actually fit I am sure I would be saying positive things as almost all of my components have been 4-5 stars with NRS.

      Service and delivery comments:

      Fast, good communication, reliable

      • Was this a gift?:
      • No
       
      4.0

      LoPro for making my own frame

      By Stoker

      from Seattle

      Verified Buyer

      Comments about NRS LoPro Frame Fittings:

      These are much better then the old style.
      Once I get my frame built I will write another review.
      My only feedback is directions on drilling and attaching the aluminum tubing/

      • Was this a gift?:
      • No
       
      5.0

      Great

      By Curt

      from WV

      Verified Buyer

      Pros

      • Nicely constructed

      Cons

        Best Uses

          Comments about NRS LoPro Frame Fittings:

          These things are great

          Displaying reviews 1-5

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          Do you have questions about this product?

          Get answers from real customers and in-house experts with AnswerBox.

          15 Questions | 40 Answers
          Displaying questions 1-10Previous | Next »
          • NRS LoPro Frame Fittings

            Q:

            What is the torque for the ubolt nuts on the lopro fittings? Thanks.
            Asked on 6/20/2016 by Ron from United States

            3 answers

            • VERIFIED BUYER

              A:

              Got a 10-12 yr old kid around? Give him/her a 3/8 ratchet with a ½” socket
              on it and let them crank hard. You will twist it off; they won’t, and it
              will be adequate.

              Answered on 6/20/2016 by Anonymous
            • Staff Reviewer

              A:

              Ron, torque specs aren't used in our industry. When assembling parts at our Frameshop they use an impact tool set at 20-25 pounds. For most items, like cross bars, just getting them snug is good enough. At 40 pounds, you're crushing the frame pipe.

              Answered on 6/20/2016 by Clyde from NRS
            • VERIFIED BUYER

              A:

              Nothing in the packaging specifies torque values, I usually just go snug
              with socket wrench but not overtightened.

              Answered on 6/20/2016 by Anonymous
          • NRS LoPro Frame Fittings

            Q:

            What is the torque for the ubolt nuts on the lopro fittings? Thanks.
            Asked on 6/20/2016 by Ron from United States

            2 answers

            • VERIFIED BUYER

              A:

              torque, you should be using a 3/8 drive ,, tight should do it bolts are
              stainless

              Answered on 6/20/2016 by Anonymous
            • VERIFIED BUYER

              A:

              Hi Ron,
              I don't measure the Torque. I tighten them down evenly with the NRS Tool or a 3/8 inch drive ratchet. This does not let me overtighten the nuts but allows me to tighten adequately. I hope this helps you.
              Mike Worden, MBA, SPHR, SHRM-SCP
              Sr. Human Resources Generalist
              855 Front Street
              P.O. Box 4759
              Helena, MT 59604-4759

              Answered on 6/20/2016 by Mike from Montana
          • NRS LoPro Frame Fittings

            Q:

            Can I buy the old ones for cheaper?
            Asked on 5/15/2016 by Mstrobes from Breckenridge, co

            3 answers

            • VERIFIED BUYER

              A:

              I have not found the older NRS frame attachments in quite some time. I think they are sold out and will not be making more. Every now and then you can find them on an old frame that is being dismantled. But, those are few and far between. They last forever. I have purchased a few of these new ones and they seem to be very efficient and low profile. I hope this helps.
              Mike Worden, MBA, SPHR, SHRM-SCP
              Sr. Human Resources Generalist
              855 Front Street
              P.O. Box 4759
              Helena, MT 59604-4759

              Answered on 5/16/2016 by Anonymous
            • Staff Reviewer

              A:

              We're sold out of the older cast LoPros.

              Answered on 5/15/2016 by Clyde from NRS
            • VERIFIED BUYER

              A:

              I don't believe they sell the old style mounts any longer.

              Answered on 5/15/2016 by Anonymous
          • NRS LoPro Frame Fittings

            Q:

            What size hole should you drill and what hardware do you recommend to attach the lopro to the tube?
            Asked on 2/17/2016 by Dan from Flagstaff

            5 answers

            • VERIFIED BUYER

              A:

              The fitting slides in tubing end. You can use a clevis pin to secure the
              fitting in the tubing.

              Answered on 2/17/2016 by Anonymous
            • VERIFIED BUYER

              A:

              the LoPro comes with a 5/16 x 2 in bolt and the u bolt for mounting to the frame so you would drill
              a 5/16 hole

              Answered on 2/17/2016 by funfishin from Olympia WA
            • VERIFIED BUYER

              A:

              You don't drill the tube that is wrapped by the U-bolt. If you are adding a new section of tube to fit over the male portion, you can drill any size if it's never been drilled. NRS uses 5/16" bolts.
              Franz Helfenstein
              Professor of Mathematics
              218 Grandview- Bend Campus
              Central Oregon Community College
              Bend, OR 97701

              Answered on 2/17/2016 by Anonymous
            • VERIFIED BUYER

              A:

              Hi,
              If I am not mistaken the hole should be about a 5/16. It may or may not come with some hardware. I think you can order the bolts and locking nuts. I purchased some of the LoPro frame fittings with blank tubing to make some accessories to my frame. I believe the LoPro's come with U-Bolts.
              I hope this helps.
              Mike Worden, MBA, SPHR, SHRM-SCP
              Sr. Human Resources Generalist
              855 Front Street
              P.O. Box 4759
              Helena, MT 59604-4759

              Answered on 2/17/2016 by Anonymous
            • Staff Reviewer

              A:

              Dan, when you buy the LoPro, in addition to the stainless U-bolt, two zinc-coated washers and nylock nuts, you also get a 2" x 5/16" zinc-coated bolt, washer and nylock nut for attaching the LoPro to the frame pipe. Be aware that we purchase pipe precisely speced to accept the LoPro stub. If you are sourcing your pipe elsewhere the stub may, or may not, fit. If you have questions, give us a call, 800.635.5202.

              Answered on 2/17/2016 by Clyde from NRS
          • NRS LoPro Frame Fittings

            Q:

            I am wondering if you have stress tested the new (and old) fittings to see how much force before failure and where the weakest point would be?
            Asked on 12/16/2015 by Marcia from United States

            5 answers

            • VERIFIED BUYER

              A:

              no testing ,just use them

              Answered on 12/17/2015 by Anonymous
            • VERIFIED BUYER

              A:

              I have had many customers in my boat standing on my casting platform with
              these fittings. I will tell you that they are super strong and are way
              better then the old brass fittings that these fittings replace.
              Awesome product for sure,
              Mike

              Answered on 12/16/2015 by Anonymous
            • VERIFIED BUYER

              A:

              The weak point is the tube that it is clamped to….

              Answered on 12/16/2015 by Anonymous
            • Staff Reviewer

              A:

              Marcia, the old cast LoPros were strong and only catastrophic damage to a frame, such as you'd never see in normal use, ever broke one. The new forged ones are stronger yet. This article gives some additional information - http://www.nrs.com/learn/new-technology-nrs-frame-parts.asp - Let us know if you have other questions, 800.635.5202.

              Answered on 12/16/2015 by Clyde from NRS
            • VERIFIED BUYER

              A:

              Really strong, I've never heard of or seen one break.
              Sent from my iPhone

              Answered on 12/16/2015 by Anonymous
          • NRS LoPro Frame Fittings

            Q:

            How do you calculate the length of pipe for a cross bar using the lo pro u bolt fittings? My raft is 46" wide at the center lines.
            Asked on 9/16/2015 by Ron from Natchez Ms

            1 answer

            • Staff Reviewer

              A:

              Ron, we measure the width of cross pieces as the center-to-center distance of the two side rails the piece fits on. If you're making your own cross pieces, the pipe on a cross member is 4" shorter than that total length. So, say for a 48" cross bar, the pipe will be 44" in length. Each LoPro adds 2" to the length. If you're buying our manufactured frame or individual pieces for your raft, you would choose the stock 48" lengths. You want the frame side rails to come at least to the center of the boat tubes, but it's fine if they extend past that.

              Answered on 9/16/2015 by Clyde from NRS
          • NRS LoPro Frame Fittings

            Q:

            Can you order a new lopro pre-drilled to fit a crossbar? Why don't they come pre-drilled?
            Asked on 3/24/2015 by Tall One

            5 answers

            • VERIFIED BUYER

              A:

              I'm pretty sure the reason they don't come pre-drilled is so you can be
              sure they line up with pre-existing holes that may be drilled in your
              crossbar. But also, if you don't have pre-existing holes, the easiest way
              to get them to line-up is to drill them at the same time. I'd recommend
              doing this with a drill press to ensure the hole is straight and in the
              center (even though I did mine by hand - it's not exact).

              Answered on 3/24/2015 by Anonymous
            • Staff Reviewer

              A:

              The reason we don't pre-drill holes in LoPros is that it's not likely to line up precisely with the existing holes in your cross member. When we assemble cross members we set them up in a jig and use a horizontal drill press to drill through pipe and LoPro shank. Depending on sharpness of drill bit, pressure of operating the press, etc the hole can wander a bit. Locked in the jig we still get a flush fit of the LoPro on a side rail, even if the hole isn't perfectly horizontal.

              Answered on 3/24/2015 by Clyde from NRS
            • VERIFIED BUYER

              A:

              LoPros don’t come pre-drilled for a good reason. If they did, and the installer wanted to use the pre-drilled hole, he or she would have to drill a perfectly matching hole in the receiving frame tube. That would require the use of professional machine shop measuring and centering tools most of us normal mortals don’t possess. Drilling that single, perfectly aligned retaining bolt hole is challenging enough doing it the easy way... after the LoPro has been inserted into the tube.

              Answered on 3/24/2015 by Anonymous
            • VERIFIED BUYER

              A:

              They are easy to drill and by not pre drilling you can orient the hole in various directions to align with your frame configuration.

              Answered on 3/25/2015 by Anonymous
            • VERIFIED BUYER

              A:

              It would be hard to drill the pipe to exactly match an existing hole. They
              drill fairly easy and can be done with a hand drill if your careful. I
              drilled one side of the cross bar and then mocked up the frame. On the
              other side I put a couple drops of epoxy on the fitting to hold it in place
              while I removed it and drilled the bolt hole.

              Answered on 3/27/2015 by Anonymous
          • NRS LoPro Frame Fittings

            Q:

            Can you drill these with a standard hand drill or do you need a press?
            Asked on 3/7/2015 by Mad for Waffles from Seattle

            1 answer

            • Staff Reviewer

              A:

              We use a modified press that drills horizontally, with the LoPro and pipe locked in a jig. Using a drill press is the most accurate way to do it. You want the LoPros on both ends of the cross member to be in the same plane and that's hard to do with a hand drill.

              Answered on 3/7/2015 by Clyde from NRS
          • NRS LoPro Frame Fittings

            Q:

            Which section of the LoPro has to be drilled in order to make them work (with your standard NRS aluminum pipe)?
            Asked on 3/7/2015 by Mad for Waffles from Seattle

            1 answer

            • Staff Reviewer

              A:

              The 2" long round stub on the LoPro is 1 3/8" in diameter. It inserts into the frame pipe and we drill a hole through pipe and stub to secure the two with a bolt and nylock nut. You can get a good look at the LoPro in this video - http://www.nrs.com/learn/hot-forged-lopros-oar-mounts.asp - Let us know if we can be of further help, 800.635.5202.

              Answered on 3/7/2015 by Clyde from NRS
          • NRS LoPro Frame Fittings

            Q:

            I am having a custom floor made for my cataraft which is currently in a different state so I cant look at it. Could someone tell me how far through you need to stick your frame pipe in order to have full grip with these? If I recall correctly, I only have about two inches of my floor pipe through on my cataraft yokes, so that only the black end cap is sticking out. I hope this makes sense to someone...
            Asked on 3/2/2015 by Rob from Dutch John

            2 answers

            • Staff Reviewer

              A:

              Rob, I'm not sure that I understand your question, but here's some info. The stub of the LoPro that fits inside the frame pipe is 2" in length. The portion of the LoPro that grips the pipe when the U-bolt is tightened is 2 1/8" across. The raised ridges on the curved surface are 1 13/16" long. If you have further questions, please give us a call, 800.635.5202.

              Answered on 3/2/2015 by Clyde from NRS
            • VERIFIED BUYER

              A:

              As long as the black end cap is sticking out, this should be fine. You can
              go right to the edge of the pipe. I do this to get full use of the side
              bars when setting up for multi-day and need all the room I can get.

              Answered on 3/2/2015 by Floater Bob from Colorado
          Displaying questions 1-10Previous | Next »

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