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 19 - Jul 24

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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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RJS
Houston, US
★★★★★ 5
Nice, Tough & Comfortable!
Size: 6.5 Wide Big Kid, Color: Black
Bought as an everyday school shoe for my 10 year old son. He likes them a lot and is holding up great through rough boy play, and they still look good after a couple months now.
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Reviewed in the United States on January 20, 2026
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Peri Nikolas
Draper, US
★★★★★ 5
Great
Size: 4.5 Big Kid, Color: Pink/Purple
perfect
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Reviewed in the United States on May 12, 2026
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FLbookworm22
Louisville, US
★★★★★ 5
Pink and purple perfection
Size: 13 Little Kid, Color: Pink/Purple, Size: 13 Little Kid, Color: Pink/Purple
Fits great and perfect colors for my (not so) little. This is her first pair of "tie" shoes so we're still learning, but the laces are a good length for teaching and practicing. She says they're very comfortable too.
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Reviewed in the United States on March 27, 2026
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Estefania P.
Louisville, US
★★★★★ 5
TTS
Size: 5 Big Kid, Color: White
TTS, comfy
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Reviewed in the United States on November 24, 2025
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Amazon Customer
Boise, US
★★★★★ 5
True to size
Size: 6.5 Big Kid, Color: Navy/Peel
My a likes the fit. Says they’re comfortable, lines the color.
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Reviewed in the United States on January 12, 2026

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