NRS LoPro Frame Fittings - Closeout

Item: 91028.01 | Product Description »

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Cast from 356 aluminum alloy, these fittings are designed to handle the demands of big-water boating.
  • We start by machining the shank to match the inside diameter of our aluminum pipe.
  • The saddle, coupled with our stainless steel U-bolt, creates a connection that will hold firmly for a lifetime of boating.
  • LoPro includes U-bolt and frame fit bolt assemblies.

  • Dimensions:
    Overall Length: 5 1/2"
    Shank Length: 2"
    Shank outer diameter: 1 3/8"
    Saddle fits pipe with 1 5/8" outer diameter
    Saddle Height: 5/8" above bar

  • When custom fitting these to a new pipe, please use a 5/16" drill bit to drill the holes.
  • 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

  (18)

More Information

Weight: with hardware is 1.0625 lbs.
Material: Cast 356-Aluminum Alloy
Components:
  • 1 - LoPro Fitting
  • 1 - U-bolt with nuts and washers

Do you have questions about this product?

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

4 Questions | 22 Answers
Displaying questions 1-4
  • NRS LoPro Frame Fittings

    Q:

    My LoPro fittings are marking my tubes up pretty good, is there any coating on the fitting from the factory? If not, what do you recommend for coating the fitting? Thanks.
    Asked on 9/30/2013 by Tim from United States

    8 answers

    • VERIFIED BUYER

      A:

      The marking is aluminum oxide. Completely harmless.
      Aluminum automotive wheels are polished and coated with clear lacquer. You could try
      that. Anodizing, powder coating, or paint are other possibilities. However these
      could be harder than the untreated aluminum and might actually be more harmful in the
      long run.
      There are various cleaning compounds for tubes, depending on what they are made of.
      UV resistant coatings (generally sacrificial, water soluble urethane) will also help
      keep any oxide stains from adhering to the fabric, make it shinier, and make it easier
      for your mother in law to slide off into that big hole.
      An old school river runner would probably advise putting on some pants. Or taking
      them off. Whatever floats your boat.

      Answered on 10/3/2013 by Anonymous
    • A:

      The LoPro is definitely leaving the mark, the mark is inside the yoke. I can rub my finger on the fitting and it leaves my finger dark gray. I was just shocked that an aluminum piece that is intended for use in a marine environment would not be coated. Powder coat anneals a356 and makes it brittle so that is out, anodize will not take well with the cast alloy so it's out as well. Paint or plastidip will definitely not stay on. Does anyone have any ideas or suggestions for durable coatings, possibly a powder coat that bakes at a lower heat? Thanks!

      Answered on 10/1/2013 by Tim from Boise, ID
    • VERIFIED BUYER

      A:

      None that I have found. Gorilla tape will protect your tubes. It's super tough. Is also strong enough for a patch.

      Answered on 10/1/2013 by Anonymous
    • VERIFIED BUYER

      A:

      No ideas aside putting tape on the tubes first.

      Answered on 10/1/2013 by Anonymous
    • VERIFIED BUYER

      A:

      As long as the u-bolts a tightened down really snug i haven't had any problems except for the occasional burr that I just file down. Hope that helps.

      Answered on 9/30/2013 by Anonymous
    • VERIFIED BUYER

      A:

      The tubes are most likely just raw Aluminum from NRS. An Anodize finish would help create a protective barrier(Thin layer of Oxide that helps with corrosion and wear), but the LoPro and Tubing are two different materials, so the softer one will always mar if you are sliding the clamps.
      I have never tried it and it's a long shot, but you may want to try using a can of plasti-dip on the low-pro/U-bolt to keep it from scratching the tube. It will probably come off fairly quickly, but Anodizing a Frame would be expensive.
      Another more option would be to have the LoPro Powder Coated/Sera-Coated and that would definitely help with corrosion and scratching.
      Best of luck

      Answered on 9/30/2013 by Anonymous
    • Staff Reviewer

      A:

      Tim, the aluminum part of the LoPro probably isn't touching the tubes, but the stainless steel U-bolt is. You could paint the bottom of the U-bolt with a good epoxy paint. Plasti-Dip makes a rubberized coating that you can paint or spray on. The aluminum side rail pipe has an anodized coating on it but over time it will also leave frame marks. Inflatable Boat Cleaner, Item # 38753.01, does a good job of removing all these kinds of marks.

      Answered on 9/30/2013 by Clyde from NRS
    • VERIFIED BUYER

      A:

      Aluminum leaves marks; nothing you can do about it unless you paint them, but the paint would wear off.

      Answered on 9/30/2013 by Anonymous
  • NRS LoPro Frame Fittings

    Q:

    does this come with a drilled hole in the shaft?
    Asked on 2/14/2013 by dlz

    9 answers

    • VERIFIED BUYER

      A:

      No, they are not predrilled, or at least as of last year they were not. I've made a couple of custom made frames and the LoPros I'ved used the shaft needs to be drilled. Here's a couple of pics of the frame, in addition to the Speed Rail connectors, hopefully you can see the LoPros and the bolts that I had to drill:

      Answered on 3/6/2013 by Anonymous
    • Staff Reviewer

      A:

      No, Diz, it's best to drill through the pipe with the LoPro stub in place, so the holes line up.

      Answered on 2/14/2013 by Clyde from NRS
    • VERIFIED BUYER

      A:

      No, you drill your own.
      It's best to drill holes in the tubing first so that they are parallel, and then use those as pilot holes for the shafts.
      harbor freight sells a drill center jig.

      Answered on 2/14/2013 by Anonymous
    • VERIFIED BUYER

      A:

      NO. It would be too difficult to match up the pipe to the hole so they are drilled through at the same time.

      Answered on 2/14/2013 by Anonymous
    • VERIFIED BUYER

      A:

      This does not come with a drilled hole in the shaft. With a strong drill and the right bit you can get it done . It is a little bit of a task though.

      Answered on 2/14/2013 by Captain Dickie from Snoqualmie WA
    • VERIFIED BUYER

      A:

      No. If it did you could never line things up. You need to line it up exactly and drill through tube and fitting together. Dont try drilling them separately, the holes wont line up. The soft aluminum is fun to work with, but you will need a drill press.

      Answered on 2/14/2013 by Anonymous
    • VERIFIED BUYER

      A:

      No, you need to drill the hole.
      I recommend to insert it to the tube and drill the hole on the tube and shaft at the same time this way the hole line up.

      Answered on 2/14/2013 by Anonymous
    • VERIFIED BUYER

      A:

      No, it does not. A hand drill will obviously do the trick. Although, I'd recommend you find someone with a drill press..

      Answered on 2/14/2013 by Anonymous
    • VERIFIED BUYER

      A:

      The LoPro fitting I purchased did not have any holes in it.  It was just a solid cast piece of metal.  I used mine to make an umbrella stand and I drilled a hole through it. 
      Hope this helps,
      Kevin

      Answered on 2/18/2013 by Anonymous
  • NRS LoPro Frame Fittings

    Q:

    Are they available in 1.5" dia saddle and shank instead of the 1.625" and 1.375" respectively?
    Asked on 9/11/2012 by Josh from Bozeman, MT

    4 answers

    • VERIFIED BUYER

      A:

      I think they just come in one size

      Answered on 9/11/2012 by Captain Dickie from Snoqualmie WA
    • VERIFIED BUYER

      A:

      To my knowledge the NRS LowPro fitting only comes in one size... Here are specs from the NRS web site.
      Dimensions:
      Over all Length: 5 1/2 inches
      Shank Length: 2
      Shank outer diameter: 1 3/8 inch
      Saddle fits pipe with 1 5/8 inch outer diameter
      Saddle Height: 5/8 inch above bar
      Comes with:
      1 - LoPro Fitting, 356 Aluminum Alloy
      1 - U-Bolt
      1 - Bolt, 5/16" x 2"
      2 - 5/16" Washers
      3 - Nuts
      Weight:
      17 oz. with U-bolts, Nuts, & Washers
      15.3 oz. LoPro only

      Answered on 9/12/2012 by Anonymous
    • VERIFIED BUYER

      A:

      The shank fits into the pipe. The saddle (and u-bolt) fit over the other pipe. They
      can't both be 1.5".
      These are designed to be used with 1 1/4" (nominal) schedule 40 aluminum pipe. It has
      an inside diameter (ID) of 1.38". The OD is 1.66". I know it doesn't make much sense
      that 1 1/4" pipe is roughly 1 1/2" in diameter, but that's how pipe works. If you have
      aluminim that is exactly 1 1/2" around, it is probably tube, not pipe.

      Answered on 9/12/2012 by Anonymous
    • Staff Reviewer

      A:

      They are made only in the one size. Since your tubing is smaller than ours, you can consider shimming to make them fit around your pipe. We've seen a number of customers do this. However, turning down the shank will take a bit more work.

      Answered on 9/12/2012 by Clyde from NRS
  • NRS LoPro Frame Fittings

    Q:

    do you have any suggestion for drilling the bolt holes in the LoPro frame fittings to get them lined up correctly. thank you. Jim Abney
    Asked on 8/20/2012 by Jim from Lakeside, TX

    1 answer

    • Staff Reviewer

      A:

      Please give a call, 877.677.4327, or drop a line to service@nrsweb.com for help with this.

      Answered on 8/21/2012 by Clyde from NRS
Displaying questions 1-4

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REVIEW SNAPSHOT®

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NRS LoPro Frame Fittings
 
4.8

(based on 18 reviews)

Ratings Distribution

  • 5 Stars

     

    (14)

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    (4)

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100%

of respondents would recommend this to a friend.

Pros

  • Rugged (3)

Cons

    Best Uses

    • Rivers (9)
    • Day trip (5)
    • Rapids paddling (3)
      • Was this a gift?:
      • No (17)

    Reviewed by 18 customers

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    5.0

    quality product

    By steven on the trinity

    from redding, ca

    About Me Advanced

    Verified Buyer

    Pros

    • Rugged

    Cons

      Best Uses

        Comments about NRS LoPro Frame Fittings:

        great quality, allows for unlimited frame configurations.

        • Was this a gift?:
        • No
         
        5.0

        lo-pro fittings

        By alpha male

        from lafayette, la.

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Cost Effective Durable
        • Rugged

        Cons

          Best Uses

            Comments about NRS LoPro Frame Fittings:

            cost effective durable fittings for building your own frame. fence fittings work but no less expensive and not nearly as strong.

            • Was this a gift?:
            • No
             
            5.0

            Always trust this product

            By DG the rafting fisherman

            from Central Coast Calif

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Cleans Easily
            • Lightweight
            • Rugged

            Cons

              Best Uses

              • Day Trips
              • Flat Waters
              • Rapids Paddling
              • Rivers

              Comments about NRS LoPro Frame Fittings:

              I built a new frame and these are the perfect connectors, they are easy to adjust and are strong in fast water.
              Being low profile you can slide over them and not get caught up.

              • Was this a gift?:
              • No
               
              5.0

              The Machining is great!

              By Balloon Man "CouchBalloons.com

              from Bend Oregon

              Verified Buyer

              Comments about NRS LoPro Frame Fittings:

              The LoPro are well made and the machine work is prefect. I just built my third frame this this frame system. One of the great things is that you can always change the system as your needs change.
              Kent Couch

               
              5.0

              Solid as a Rock

              By Richp

              from Midwest

              Verified Buyer

              Pros

                Cons

                  Best Uses

                  • Rivers

                  Comments about NRS LoPro Frame Fittings:

                  Simple, durable, and allows flexible adaptation in frame design and use

                  • Was this a gift?:
                  • No

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