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Domyos 1.1 inches Smart Lock Barbell Collars

Sale price: $4.99 Regular price:

These disc collars will transform your workout. They guarantee easy and effective tightening so that you can train safely and with confidence. They take less than 2 seconds using just one hand.

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Size: Select a size
Sale price: $4.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8380690

Product Videos

Product Features

A photo of the Domyos 1.1 inches Smart Lock Barbell Collars in use

Domyos 1.1 inches Smart Lock Barbell Collars | hold your plates on the barbell very safely. Easy to put on, these 1.1 inches barbell collars will give you the confidence you need to workout!

These disc collars will transform your workout. They guarantee easy and effective tightening so that you can train safely and with confidence. They take less than 2 seconds using just one hand.


Effective and secure tightening: 5 points of contact on the bar.

Ergonomic grip

Can be fixed in place in 2 seconds using just one hand

Easy to put on

Special opening system to prevent rubbing against the bar.

Product Lifestyle Image Gallery

Image Gallery

Domyos 1.1 inches Smart Lock Barbell Collars,base color 

Domyos 1.1 inches Smart Lock Barbell Collars,base color

Product Customer Reviews

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Domyos 1.1 inches Smart Lock Barbell Collars,base color
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Very happy

Smart weight lock works very well and very happy

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Just perfect!

Great product! Can recommend it confidently for everyone

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Smart Weight lock

Excellent and quality product. Moreover, it is cheap and value for money.

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Not reliable

It moves easily under not-so-heavy weight. It has no specification on how much weight it can hold. I I have a dumbell with 5+2+1+1 KG plates and the clamp is too weak.

This weights are very good quality and personally

I am so happy that i have this weight locks cause there save me so much time do and undo normal locks, and i strongly recommend them!

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Easy to use

Good value, easy to use and do the job as expected.

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Excellent product!

No need for a gym membership anymore! 5⭐️

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Very nice

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Was expecting these to come as a pair

Was expecting to order as a pair so I put in quantity x2 to use on two barbells. Disappointing that the image clearly shows two with the order..... Or have I just not been sent the second pair?

Useful only for very light lifting

the grip is slowly getting worse. Once i was doing hammercurls with 6kg on each side and the lock just gave up and all the weight fell down, narrowly missing my foot. Now i have a hole in my floor, but at least not a hole in my foot.

Bad quality

Broke under a week of use

Smart Lock 28mm

Slight flimsy feel but does the job. There are better ones on Ebay.

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Doesn’t fit 28mm bars

Brought these to save the effort of spin locks during lockdown home workouts These do not fit any of my 28mm standard bars at all. Fall straight off and even go onto the bar without opening/loosing the lock Wish i read the reviews beforehand.


So quick and easy to use - far easier than metal clamps

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Does the job perfectly

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Additional Product Information



  • 100% Polyamide


  • 100% Rubber - Thermoplastic

Compatibility: bar / disc collar

Plate collars are compatible only with our barbells. Our standards for our barbells diameters, which must not vary by more 1 mm, ensure the product stays in place. Use your smart disc collars only with DECATHLON/DOMYOS 1.1 inches (28 mm) diameter barbells. This product cannot be fitted on threaded bars. They do NOT fit on American standard barbells (1 inch diameter)

Did you know?

Our DECATHLON bars and smart disc collars were designed to be used together. While our smart disc collars are compatible with our 1.1 inches (28 mm) barbells, we cannot guarantee compatibility with other brands.



Product testing

Tested in use by more than 100 users (home use) Tested and approved in use at our DOMYOS CLUB fitness center by more than 2,000 members during a body sculpt class. In the lab: load test (guaranteeing the hold of the disc collar) In the lab: fatigue test (repeated opening and closing of the disc collar)

Storage instructions

We suggest regularly cleaning your disc collars with a cleaning product.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual