SKU: 42150636367

Strength Shop Adjustable Dumbbell Extension Kits

Sale price$215.55 Regular price$239.50
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Strength Shop Adjustable Dumbbell Extension KitsIncrease the Weight. Keep the System. The Strength Shop Extension Kits allow you to upgrade your existing Adjustable Dumbbells to a higher weight range without replacing the handles or starting from scratch. Each kit includes precisely the components required to reach the next configuration. The adjustment mechanism, balance, and feel remain exactly the same: only the maximum capacity increases. All kits are fully compatible with the Strength Shop

Increase the Weight. Keep the System.

The Strength Shop Extension Kits allow you to upgrade your existing Adjustable Dumbbells to a higher weight range — without replacing the handles or starting from scratch.

Each kit includes precisely the components required to reach the next configuration. The adjustment mechanism, balance, and feel remain exactly the same: only the maximum capacity increases.

All kits are fully compatible with the Strength Shop Adjustable Dumbbell system.

Upgrade Options

  • 20 kg to 36 kg – Increases a 20 kg dumbbell pair set up to a 36 kg set (Contents: 16 × 2 kg plates)
  • 20 kg to 49 kg – Increases a 20 kg dumbbell pair set up to a 49 kg set (Contents: 28 × 2 kg plates, 2 × pair of long bolts 1.5 kg)
  • 36 kg to 65 kg – Increases a 36 kg dumbbell pair set up to a 65 kg set (Contents: 28 × 2 kg plates, 2 × pair of long bolts 1.5 kg)
  • 20 kg to 65 kg – Increases a 20 kg dumbbell pair set up to a 65 kg set (Contents: 44 × 2 kg plates, 2 × pair of long bolts 1.5 kg)

Why Upgrade Instead of Replace?

  • Expand progressively as your strength increases
  • Keep your original handles and hardware
  • Maintain identical handling and balance
  • Save space and cost compared to buying a second set
  • The system is built to grow with you

FAQs

  • Q: Do I need to buy a completely new dumbbell set to increase the weight?
    No. The extension kits are designed specifically to upgrade your existing Adjustable Dumbbells.
  • Q: Can I upgrade in stages?
    Yes. For example, you can move from 20 kg to 36 kg first and later expand further.
  • Q: Are the plates identical to the original ones?
    Yes. The extension plates match the original plates in material, dimensions, and finish.
  • Q: Do the kits include handles?
    No. The extension kits include only the listed weight plates required for the upgrade.
  • Q: What is the weight range for the different bolt configurations?
    The dumbbells can use two bolt configurations depending on the total weight:

    Standard bolt (1 kg): adjustable from 4 kg up to 36 kg
    Extended bolt (1.5 kg): adjustable from 39 kg up to 65 kg
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42150636367

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Barb
Draper, US
★★★★★ 1
Not as it seems
Color: Black, Size: 6 Panel
these are awful... Each individual panel is fine, but when you put it together it can barely stand up, and the clips that hold it together keep popping off. Steer clear of this item.
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Reviewed in the United States on April 7, 2026
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Verified Purchase
Timothy Beckner
New York, US
★★★★★ 5
As described
Color: White, Size: 6 Panel
Works great in my clinic
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Reviewed in the United States on May 17, 2026
M
Verified Purchase
Mike S.
Grantham, US
★★★★★ 5
Review
Size: 6Ft-without USB
Nice surge protector. Really like the amount of outlets. The big seller is the rotating plug.
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Reviewed in the United States on May 16, 2026
J
Verified Purchase
Justin Acebedo
Lake Worth, US
★★★★★ 5
Did its job protected my tv and stoppped a fire in my house.
Size: 6Ft-without USB, Size: 6Ft-without USB
Bought this not know what jewels meant the higher the better from what a Best Buy tv man told me. Well it finally did its job one of my air purifier machines had a burn out and the plug saved me from a fire. Great product and did its job. I would recommend and or buy again. 5 stars
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Reviewed in the United States on May 12, 2026
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Verified Purchase
Nicole Jones
Massapequa, US
★★★★★ 5
Wireless things still have 🔌
Size: 6Ft-without USB
Have noticed the more things you buy that claim to be wireless still have 🔌 so the number of outlets is fantastic, it sits on my tv stand. A-Ok 👌🏾.
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Reviewed in the United States on May 25, 2026

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