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The short answer is yes, more often than not Average Joe Disc Fix Kits & Locking Pin Kits will fit OEM & knockoff 552s and 1090s straight out-of-the-box. To better understand what that means, read on...

After 3 years and a few thousand customer installations, it's safe to say my Disc Fix & Locking Pin Kits work beautifully with about 95% of 552 & 1090 dumbbells straight out-of-the-box with no modifications. The remaining 5% can fit, but generally require some DIY tweaks. And to-date, 100% of my Grip Kits have fit customer dumbbells out-of-the-box with no tweaking.

Tweaking may involve sanding/filing/grinding the discs, locking pins and/or your OEM weight plates to provide more clearance if necessary. As little as a fraction of a millimeter of material can mean the difference between smooth operation and an overly tight fit. The need to do extensive tweaks is pretty rare.

I discuss this topic in several of the videos on my Average Joe YouTube Channel. Factors such as the dumbbell's age, wear & tear, damage and the OE manufacturer's own production inconsistencies mean that no two dumbbells are perfectly identical. In practical terms, that means the overall fit can vary slightly from one dumbbell to the next.

If you want to try my Disc Fix Kit, odds are pretty good that it’ll work with your dumbbells straight out of the box. If for some reason there’s a fit issue, you can choose to DIY tweak the discs/pins and/or your weight plates (and I will provide guidance) or return the Disc Fix Kit for a refund minus any shipping/tax and Paypal’s original payment processing fee. Currently, there’s no restocking fee, but you are responsible for the cost of shipping the kit back to me. For complete details, please read the Average Joe Guarantee & Warranty Policy.

In this context, if you’re interested in trying one or more of my kits, let me know and I’ll get the ball rolling for you.

Yes, most knockoffs are compatible. Please refer to the answer above.

Yes! My 3rd Gen discs arrived in November 2022. They can be purchased and installed individually.

It's easiest if I just show you the difference in this video 3rd Gen Average Joe Discs.

Beginning January 2023, a limited number of factory seconds kits will be available each month at a 25% discount off of the regular kit price. The number and type of kits available from month to month will vary, so I cannot guarantee availability. Factory seconds kits do not appear on the order form. Email me any time to find out if I have any factory seconds of the kit(s) that you want: joe@averagejoeinnovations.com

Factory seconds kits may have dings, nicks, scratches, dents, pits, spots/stains, irregular knurls, or other cosmetic imperfections above and beyond what is considered typical. There are no defects which will affect a kit's performance. Here are just a few of the kits sometimes available as factory seconds:

• 552 Series 1 and 2 2nd Gen Disc Fix Kits, cast aluminum, $120
• 552 Series 1 and 2 3rd Gen Disc Fix Kits, cast aluminum, $150
• 1090 2nd Gen Disc Fix Kits, cast aluminum, $150
• 1090 3rd Gen Disc Fix Kits, cast aluminum, $180
• 552 and 1090 30mm Grip Kits, machined 316 stainless steel, $75
• 552 and 1090 Dial Kits, cast aluminum, available in black teflon or nickel-plated finish, $120
• 552 and 1090 End Cap Kits, 6061 machined aluminum, available in black teflon or nickel-plated finish, $30

No. Never drop your stock or upgraded dumbbells from any height, or use them as pushup handles for bodyweight exercises such as a Devil's Press or Renegade Row. Always set them down on the floor or in their bases between sets. SelectTech dumbbells were never designed to be dropped. It's why Bowflex placed "do not drop" stickers on the handles. The vast majority of today's selectable weight dumbbells are not designed to survive repeated drops even onto padded flooring.

The force of impact from a drop, and the forces applied when using these dumbbells to support your body weight are far greater than the typical forces exerted during normal exercises such as curls, flys, presses, bent over rows, and overhead extension.

While my Disc Fix Kits & Locking Pin Kits are better equipped to resist damage during ordinary use, they are not indestructible. It's why my warranty does not cover damage due to impact from a drop or from using your dumbbells to support your body weight.

Additionally, even if my discs and pins survive the higher impact force of a drop, your dials, dumbbell shaft, and weight plate tabs may not. Individual weight plates alone are extremely costly to replace. Should you break a weight plate tab, I do have a "$1 Fix" DIY video up on my Average Joe YouTube channel that explains how to fix a broken tab with parts available from a local hardware store.

I would not recommend it. Please refer to the answer above.

Yes, Average Joe Kits are backed by a 30-day Guarantee and Plain English Limited Warranty. And I've put all of the details into a convenient PDF that you can download or print out for your records. Download the Average Joe 30-Day Guarantee & Plain English Limited Warranty. I reserve the right to make changes to my guarantee and warranty policy without notice. Any changes will apply to purhases made on or after the publication date of the revised policy.

Absolutely! Average Joe Innovations now has customers all over the world, from Brazil, Chile, Columbia, Canada, England, France, Germany, Iceland, Ireland, Mexico, Netherlands, Portugal and Spain, to Abu Dhabi, Australia, Bulgaria, Czechia, India, Israel, Kuwait, Malaysia, New Zealand, Singapore, Vietnam and many more.

For an accurate shipping quote, please provide your full address and a list of the kits you wish to order.

Average Joe Innovations, LLC was formed in mid-2020. But it began life in early 2019 as a personal project to fix some of my broken and unsafe dumbbells rather than throw them out. As luck would have it, a wave of unanticipated interest in my very first 2019 "dumbbell fix" video on YouTube led to a demand for dumbbell fixes and the formation of the company. These days the "we" of AJI is still primarily me, Average Joe, working in collaboration with metal fabricators locally here in a small New Hampshire town, as well as abroad in China. And every once in a while I convince my teenage kids to lend me a hand.

AJI is still just a one-man-band. I handle everything from research, development, part sourcing, testing and quality assurance to invoicing, packaging, shipping and pre-/post-sales customer support. All of this in addition to my "day job". So I squeeze in email replies whenever and however I can.

Generally speaking, I try my best to reply to customer inquiries and orders within 24 hours, but it is not uncommon for me to reply after 2-3+ days depending on the volume of inquiries and other tasks on my plate. I appreciate your patience and understanding while I grow AJI to the point of being able to hire other folks to help out.

If a couple days pass and you have not received a reply or invoice, please don't hesitate to follow up with me just in case I've not yet seen your original email for any reason.

No, not at this time. Bowflex®, SelectTech® and Nautilus® are trademarks and property of Nautilus, Inc. Powerblock® is a trademark and property of Powerblock, Inc. These OEMs have had zero involvement with the development, marketing and sales of AJI product upgrades. They aren't affiliated with AJI in any way, and my product fixes and upgrades are in no way endorsed by these companies.