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NRS LoPro Frame Fittings

Item: 91028.02 | Product Description »

$19.95

  (6) | Write a Review | Ask a Question | 6 Questions

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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

      (6)

    More Information

    Overall Length: 5 1/4"
    Shank Length: 2"
    Shank outer diameter: 1 3/8"
    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

    Do you have questions about this product?

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

    6 Questions | 14 Answers
    Displaying questions 1-6
    • 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

      • 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
      • 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
    • NRS LoPro Frame Fittings

      Q:

      can I switch out my old lo pro fitting with the new with out changing original pipe length?
      are thenew low pro fittings much lighter than the new ones, if so how much lighter?
      Asked on 1/23/2015 by glenn from United States

      7 answers

      • VERIFIED BUYER

        A:

        I'm sorry, I have only used the new LoPro fittings so I can't compare them with the old ones. I can say I am very happy with the new LoPro fittings in all ways.
        Thanks, Kevin
        Sent from my iPad

        Answered on 1/30/2015 by Anonymous
      • Staff Reviewer

        A:

        Glenn, the new LoPros are 1/32" shorter than the old ones, meaning the pipe on each cross member has increased in length 1/16", not enough to really cause a problem. Here is the possible issue with replacing the LoPros. The old LoPros were cast in sand molds, so the stub that fits in the pipe was of an imprecise diameter. Also, the inside diameter of the pipe we bought varied a bit from order to order. This meant that we often had to lathe the stubs to get a good fit. The stubs on the new forged LoPros have a very precise diameter. Also, to ensure a consistent pipe ID we are now sticking with one pipe supplier and have purchased our own die for their extrusion process. The new ones will probably fit just fine, but they may not. A couple of people have reported that the new ones were too large for their pipe. If all your frame pieces were bought at the same time the fit should be the same. The only thing I can suggest is to give it a try. Remember, the new ones won't come with the holes drilled. The new ones are approximately 25% lighter than the old ones. Let us know if you have further questions, 800.635.5202.

        Answered on 1/23/2015 by Clyde from NRS
      • VERIFIED BUYER

        A:

        I substituted without changing length of pipe. Substantially lighter at
        least 40%

        Answered on 1/23/2015 by Anonymous
      • VERIFIED BUYER

        A:

        I have switched the two fittings interchangeably and I have both on my
        setup.

        Answered on 1/23/2015 by Anonymous
      • VERIFIED BUYER

        A:

        Yes, no problem. I have some old and some new Lopros so you could even swap a few at a time if you want.

        Answered on 1/23/2015 by Anonymous
      • VERIFIED BUYER

        A:

        The new ones are the same to the 1/16", I didn't put a caliper on it. The new ones are 11.75oz with no bolts or washers and holes drilled for the cross bolt. The old frame i have doesn't allow removal for weight. The cross bolt holes will have to be drilled in the new ones.
        Sent from my iPad

        Answered on 1/23/2015 by Anonymous
      • VERIFIED BUYER

        A:

        The new fittings that I got needed to be remilled. They were too large diameter. Assuming that problem has been fixed, I think the length should not be an issue. You will need to drill them though which should also not be an issue.

        Answered on 1/23/2015 by Anonymous
    • NRS LoPro Frame Fittings

      Q:

      What is the measurement from the inside edge of the shank to the center of the saddle mount. To ask another way, if I have a 60" wide frame and am cutting a piece of tubing to use with the LoPro's what length would I cut the tubing so that after adding a LoPro on each side the assembly would fit the 60" frame?
      Asked on 7/9/2014 by Framethrower from Fairplay, CO

      1 answer

      • CUSTOMER CARE

        A:

        You'll need to take 2- 2 1/16" off each side to accommodate for the Lo Pros.

        Answered on 7/10/2014 by Kyle from NRS
    • NRS LoPro Frame Fittings

      Q:

      What is the ID of the corresponding pipe?
      Asked on 6/10/2014 by Whaleskin from Salida

      1 answer

      • Staff Reviewer

        A:

        Our frame pipe is 1 1/4" Schedule 40, 6061-T6 anodized aluminum. The ID is 1 3/8" (1.375").

        Answered on 6/10/2014 by Clyde from NRS
    • NRS LoPro Frame Fittings

      Q:

      Will these fittings work if I were to want to switch out the older low pro fitting to these new ones?
      Asked on 4/5/2014 by SpeyFisher from Spokane, WA

      2 answers

      • VERIFIED BUYER

        A:

        Yes. They will work fine. I put the new ones on my frame and they look great. Update you oar towers to the new ones and you will have a great looking frame.

        Answered on 4/6/2014 by Anonymous
      • Staff Reviewer

        A:

        They would probably fit, but we can't be sure. Remove a couple of your LoPros and carefully measure the inside diameter of the pipe. The shank on these new forged LoPros will fit very snugly inside 1 5/8" inside diameter pipe. Back when your frame pieces were made the ID of the pipe we bought varied slightly, so we lathed the LoPro shanks to fit. We've now purchased our own pipe dies that the pipe manufacturer uses, so we have that consistent 1 5/8" inside diameter. Give us a call, 800.635.5202, if you have questions.

        Answered on 4/5/2014 by Clyde from NRS
    • NRS LoPro Frame Fittings

      Q:

      Well, you say they are 25% lighter but don't specify the weight in the specs. So what do they weight and what do the existing LoPro's
      weight? Also you should mention that they will only fit 1-5/8" diameter schedule 40 aluminum pipe. The schedule of the pipe refers to the wall thickness as I'm sure you know.
      The new LoPro's do look great. I just order a new style 8" oar stand and you finally put in a plastic bushing, right on!!!
      Asked on 2/16/2014 by JV from Hamilton, MT

      1 answer

      • Staff Reviewer

        A:

        JV, the new LoPros weighs 11.6 ounces. The old ones vary in weight, about 15.3 - 15.5 ounces. They are cast in sand molds, which leads to slag and protrusions that have to be ground off. Factory run pipe varies in inside diameter, so we often had to lathe the LoPro shanks to fit. Since the shanks on the new model are precise we've purchased our own pipe die that the pipe manufacturer uses, so we get a good fit. And yep, the nylon bushing, an idea that Bill Parks came up with, is a great addition.

        Answered on 2/17/2014 by Clyde from NRS
    Displaying questions 1-6

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    REVIEW SNAPSHOT®

    by PowerReviews
    NRS LoPro Frame Fittings
     
    4.8

    (based on 6 reviews)

    Ratings Distribution

    • 5 Stars

       

      (5)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

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    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

      Cons

        Best Uses

            • Was this a gift?:
            • No (3)

          Reviewed by 6 customers

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          Displaying reviews 1-5

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          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

               
              5.0

              Improvement over the Sand Cast Fittings

              By XR650Ryder

              from Island Park Idaho

              Verified Buyer

              Pros

              • Consistent size
              • Grip Teeth
              • Lighter
              • Nice appearance

              Cons

              • Hollow Stem

              Best Uses

              • Can Be Re-purposed

              Comments about NRS LoPro Frame 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 1.400" bolt spacing from the lip. Had to add a couple of undersized drills to insure the backside hole didn't walk off.

               
              5.0

              NRS LoPro Frame Fittings

              By Hue G

              from Applegate, CA

              Verified Buyer

              Comments about NRS LoPro Frame Fittings:

              These are more astheticelly pleasing than the older model. Time will till how they hold up, but I'm sure they will.

               
              5.0

              Lighter and better design than the old

              By Paddler

              from Sacramento, CA

              Verified Buyer

              Pros

                Cons

                  Best Uses

                    Comments about NRS LoPro Frame Fittings:

                    Big improvement over old LoPro

                    • Was this a gift?:
                    • No

                    (1 of 1 customers found this review helpful)

                     
                    4.0

                    Tight grip, need to drill your own holes

                    By flyfisher

                    from New river va.

                    Verified Reviewer

                    Pros

                    • Very Tight Grip For Thigh

                    Cons

                    • No Pre Drilled Holes

                    Best Uses

                    • Fishing Thigh Bars

                    Comments about NRS LoPro Frame Fittings:

                    My old lopros slipped on my fishing thigh bars. The new lopro is very tight. Good grip. There are no pre drilled holes. They should have included this in the product description. It cost me $26 to have the holes drilled in 3 lopros at a machine shop.

                    • Was this a gift?:
                    • No

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