: FEIERDUN Adjustable Dumbbells - Versatile and Customizable Strength Training

Published on Aug. 7, 2023, 7 p.m.

The FEIERDUN Adjustable Dumbbells are an innovative take on the traditional dumbbell design. With weight plates that can be easily added or removed, these dumbbells allow you to customize your workout intensity and target different muscle groups. I evaluated the 50LB model, which comes with plates ranging from 2.5 lbs to 5 lbs for a maximum of 50 lbs total weight. Keep reading for my full review on the design, versatility, durability, and value of these unique adjustable dumbbells.
FEIERDUN Adjustable Dumbbells   50LB


The FEIERDUN Adjustable Dumbbells are sold by the FEIERDUN fitness equipment company, founded in 1993. Their goal is to provide high quality and versatile workout gear to help customers reach their fitness goals. This dumbbell set exemplifies that mission with its clever and customizable design.


The key features of these dumbbells include:

  • Adjustable weight plates from 2.5 lbs to 5 lbs
  • Total weight capacity up to 50 lbs
  • Can be used as dumbbells, barbell, kettlebells, and pushup stands
  • Durable construction with iron weights encased in plastic
  • Non-slip grip bar with diamond texture
  • Comes with connecting rod and handles for kettlebell and pushup configurations
  • Storage-friendly compact design
    FEIERDUN Adjustable Dumbbells   50LB

Design and Appearance

These dumbbells have a sleek and modern aesthetic. The weights are encased in durable black plastic with the FEIERDUN branding embossed on each plate. The grip bars have a diamond textured coating for optimal grip and comfort.

When separated into the individual dumbbell bars, the set has a relatively compact footprint. Each dumbbell handle is 22.7 inches long, suitable for most users. The plastic coating helps reduce noise when placing the dumbbells down and prevents damage to floors.

Versatility and Customization

The magic of these dumbbells lies in their adjustability and ability to transform for different exercises. The core pieces can be configured as:

  • Adjustable dumbbells - Perfect for bicep curls, overhead presses, and a full range of free weight exercises. Adjust weight from 6 lbs up to 25 lbs per hand.

  • Barbell - Add connecting rod to use two grip bars as one long barbell for squats, bench press, and more. 50 lb total capacity.

  • Kettlebell - Attach kettlebell base and handle to one dumbbell for kettlebell swings and lifts. Up to 25 lb capacity.

  • Push-up stands - Use upright dumbbells as elevated stands for push-ups and dips.

This range of options allows you to target all muscle groups and get a complete strength workout with just one compact set. The adjustability also lets you increase intensity as you gain strength.
FEIERDUN Adjustable Dumbbells   50LB

Durability and Quality

Considering their reasonable price point, these adjustable dumbbells are very sturdy and well-constructed. The plastic coating on the weight plates is thick and durable, protecting the cast iron weights inside.

The grip bars feel solid in the hand with just the right amount of texture for a secure hold. The diamond grip pattern also provides a nice aesthetic touch.

The set comes with 4 safety nuts to tightly secure the weights to the bars. When properly tightened, there is minimal loosening or rattling during vigorous workouts.

The materials seem capable of withstanding frequent, high-intensity use without breaking down. And FEIERDUN provides a 3 year warranty on all parts for extra peace of mind.

Ease of Use

These dumbbells couldn’t be much simpler to use. The threaded connector bars make it easy to slide on or remove weight plates quickly. To increase weight, just twist on another plate or two.

Switching between the dumbbell, barbell, and kettlebell configurations is also fast and intuitive. The set comes with clear instructions on how to assemble each variation.

The compact storage size means you can stash the set neatly in a corner when not in use. It takes up just 0.2 square meters according to the manufacturer.

Value for Money

Given the high quality materials, versatile functionality, and sturdy construction, this adjustable dumbbell set provides fantastic value. For well under $200, you get the capabilities of four separate pieces of equipment.

The set would be a worthwhile investment for anyone equipping a home gym on a budget. The variety of configurations caters well to beginners who want to perform a wide range of exercises. More advanced lifters will also appreciate the ability to incrementally increase weight as they progress.

User Feedback

Based on over 1,100 customer reviews, these adjustable dumbbells average an impressive 4.6 out of 5 stars on Amazon. Most users praise the versatility of exercises, easy customization, and quality construction.

Many mention the set is perfect for novices starting their strength training journey. Users say the plastic coating helps reduce noise that may bother apartment neighbors.

Some users caution against over-tightening the nuts to avoid stripping the plastic threads. A few complained of the nuts loosening up at higher weights. One user suggested metal nuts could further improve durability.

But overall, customers find excellent value in the all-in-one functionality of this adjustable dumbbell kit.

Use Cases:

The FEIERDUN Adjustable Dumbbells are ideal for home gyms with limited space. The customizability allows both beginners and experienced lifters to perform full body strength training. Useful for apartment dwellers who want to workout without noise disturbances.


  • Currently priced at $149.99 on Amazon
  • Qualifies for Prime free shipping
  • Represents excellent value for a 4-in-1 adjustable dumbbell set


For those seeking an inexpensive but well-made strength training solution, the FEIERDUN Adjustable Dumbbells are a superb option. The cleverly adjustable and multi-functional design allows you to target all muscle groups with a single compact set.

Sturdy construction, easy customization, and expansive exercise options make these dumbbells a budget-friendly way to equip a home gym. Novices can gradually increase intensity as they build strength. With great quality and value, the FEIERDUN dumbbells earn a strong recommendation.


  • Dimensions: 22.8 x 12 x 7 inches
  • Weight plates: 2.5, 4.5, 5 lbs
  • Total capacity: 50 lbs
  • Grip bar length: 22.7 inches
  • Handle diameter: 1 inch
  • Materials: Plastic coated iron weights, steel bars

Box Includes:

  • 2 x Dumbbell bars
  • 4 x 2.5 lb plates
  • 4 x 4.5 lb plates
  • 4 x 5 lb plates
  • 4 x Safety nuts
  • 1 x Connecting rod
  • 2 x Kettlebell handles
  • 1 x Kettlebell base rod

How to Use:

  1. Choose desired weights by twisting plates onto the threaded dumbbell bars.
  2. Tighten safety nuts to secure weights.
  3. For barbell, connect two bars together with included connecting rod.
  4. For kettlebell, attach handle and base rod to one dumbbell bar.
  5. Stand dumbbells upright to use as pushup stands.
  6. Start lifting! Adjust weights as needed.