---
title: "4kg Dumbbells Pair — £198K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/sports-outdoors/4kg-dumbbells-pair"
last_updated: "2026-08-01T10:13:50.546Z"
locale: en
meta:
description: "Niche score 52/100 · £198K/yr market · 233K searches/yr · £16.53 avg price. Strong incumbent ratings (4.6★) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £198K/yr market · 233K searches/yr · £16.53 avg price. Strong incumbent ratings (4.6★) keeps it on the watch list. Data updated Jul 2026."
"og:title": "4kg Dumbbells Pair — £198K/yr Amazon UK Niche (2026) - Flapen"
---
# **4kg dumbbells pair**
**Worth a look**
Shows low returns (0.4%), but strong incumbent ratings (4.6★) keeps it on the watch list.
Market size 39Growth 36Conversion 60Competition 53Returns 98Price range 84Avg price 79Brand share 56Review moat 25Quality gap 23
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Price range**
**Great****£6.78–£64.01**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****£16.53**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****£198K**
£198K/yr · 233K searches
**Growth**
**Okay****+8.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****3,963.23**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United Kingdom niche tracking, 4kg dumbbells pair is a £198K/yr Amazon United Kingdom market (233K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4kg dumbbells pair market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **£248K–£331K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#55**
- **Page quality**
- **0%**
- **Prime**
- **65%**
- **Sponsored**
- **96%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **196 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▼falling
**Sellers**
**19**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 93%
**Open market**
**22%**
- Amazon Basics37% - HOMCOM10% - SONGMICS9% - ZENO9% - Bestfor6% - Athlyt6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +8.6% search growth over the last 90 days.
6K4KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/uk/sports-outdoors/4kg-dumbbells-pair/trend)
## **Top 4kg dumbbells pair search terms**
- **4kg dumbbells pair**107K/yr+2.7%6.3% conv. - **4kg weights**33K/yr+12.4%5.7% conv. - **dumbbells 4kg**14K/yr+10.9%5.3% conv. - **4kg dumbbells**16K/yr-9.3%4.0% conv. - **4 kg dumbbells pair**13K/yr+21.0%6.1% conv. - **4kg weights for women**9K/yr+109.7%5.7% conv. - **dumbbells 4kg pair**6K/yr+8.0%4.8% conv. - **weights 4kg**6K/yr-2.3%5.4% conv. - **4 kg weights for women**5K/yr+18.9%6.9% conv. - **4kg dumbbell**6K/yr+21.0%4.6% conv. [**All search terms **](https://flapen.com/research/uk/sports-outdoors/4kg-dumbbells-pair/search-terms)
## **Top 4kg dumbbells pair products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%£10K10%£20K15%£30K20%£40K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Amazon Basics Rubber Encased Hex Dumbbell Weights Set 5 kg Black**Amazon Basics**£16.83**4.6★736 rev](https://www.amazon.co.uk/dp/B0DMDG9CC3) [2**Amazon Basics 4kg Dumbbells 2-Pair**Amazon Basics**£14.48**4.7★29,488 rev](https://www.amazon.co.uk/dp/B078XY5BY7) [3**HOMCOM Rubber Dumbbell Sports Hex Weights Sets Home Gym Fitness Hexagonal Dumbbells Kit Weight Lifting Exercise (2 x 4kg) Black**HOMCOM**£14.90**4.7★3,072 rev](https://www.amazon.co.uk/dp/B01F85YU48) [4**Bestfor Pair of 4kg Hex Anti Roll Non Slip Neoprene Dumbbell Weights For Exercise Fitness Workouts Lifting with Exercise Chart**Bestfor**£16.86**4.7★264 rev](https://www.amazon.co.uk/dp/B09MSJFW2N) [5**Athlyt Neoprene Dumbbell Set 2 x 4kg Grey**Athlyt**£16.28**4.7★6,589 rev](https://www.amazon.co.uk/dp/B07HFHH73F)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HERQ Hex Dumbbells Set | Rubber Coated Dumbbell Pair | Anti-Roll Free Weights for Home Gym | Ergonomic Grip Weights Set for Strength Training Fitness Bodybuilding Workouts (8KG | 2 X 4KG)**HERQ**£13.22**2 rev1mo ago](https://www.amazon.co.uk/dp/B0H5RJBCMV) [**Neoprene Dumbbells Set of 2 Hand Weights for Women Men (1/2/3/4/6/8 kg Pair) Small Dumbbells Arm Weights for Ladies Gentlemen - Yoga Pilates Gym Home - Workout Fitness Strength Training**Passer**£9.22**51 rev7mo ago](https://www.amazon.co.uk/dp/B0FP258F3V) [**Neoprene Dumbbells Set of 2 Hand Weights for Women Men (1/2/3/4/6/8 kg Pair) Small Dumbbells Arm Weights for Ladies Gentlemen - Yoga Pilates Gym Home - Workout Fitness Strength Training**Passer**£8.71**51 rev7mo ago](https://www.amazon.co.uk/dp/B0FP26K8CJ) [**Hex Dumbbells Sets 2.560kg | Heavy-Duty Rubber-Coated Cast Iron Weights Anti-Roll Hex Design Ergonomic Grip Ideal for Home Gym Bodybuilding & Strength Training**RAVIAN**£10.32**60 rev10mo ago](https://www.amazon.co.uk/dp/B0FRGPFHM3) [**Amazon Basics Adjustable Dumbbell 5 Weight Settings from 2kg to 12kg Single Dumbbell for Home Gym Strength Training Workout Black**Amazon Basics**£64.01**106 rev12mo ago](https://www.amazon.co.uk/dp/B0D9JFQS7P)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HERQ Hex Dumbbells Set | Rubber Coated Dumbbell Pair | Anti-Roll Free Weights for Home Gym | Ergonomic Grip Weights Set for Strength Training Fitness Bodybuilding Workouts (8KG | 2 X 4KG)**HERQ**£13.22**5.0★**▲ 106%**](https://www.amazon.co.uk/dp/B0H5RJBCMV) [**KAKSS Neoprene Dumbbells Set 4kg Pair (2 x 2kg) Orange Hex Dumbbells with Color Coded Thick Vinyl Coating and Non-Slip Grip Cast Iron Hand Weights for Women Home Gym Workouts**Kakss**£12.15**4.6★**▲ 105%**](https://www.amazon.co.uk/dp/B09QM2GQBX) [**KAKSS Coated Metal Dumbbells Set 4kg Dumbbells Pair (2 x 4kg) Blue Hand Weights Dumbbells Set with Smooth Washable Finish for Gym Weights for Home and Fitness Training coated metal alternative**Kakss**£16.31**4.4★**▲ 102%**](https://www.amazon.co.uk/dp/B0B2K8FL9W) [**Amazon Basics Adjustable Dumbbell 5 Weight Settings from 2kg to 12kg Single Dumbbell for Home Gym Strength Training Workout Black**Amazon Basics**£64.01**4.5★**▲ 101%**](https://www.amazon.co.uk/dp/B0D9JFQS7P) [**Athlyt Neoprene Dumbbell Set 2 x 4kg Grey**Athlyt**£16.28**4.7★**▲ 97%**](https://www.amazon.co.uk/dp/B07HFHH73F)
**~~View all trending →~~**
## **What buyers say about 4kg dumbbells pair**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**27%
*“Good quality product delivered as described”*
**Value For Money**15%
*“Reasonable price”*
**Grip**9%
*“Good Grip”*
**Advertised Vs Actual Product**9%
*“Just like the Picture”*
**Weight Light**8%
*“Very happy with these weights”*
**Ease Of Use**5%
*“easy to use”*
**Weight Heavy**5%
*“Great weights”*
**Exercise/Sports Suitability**3%
*“great for a home workout”*
**Comfort-Overall**3%
*“Very comfortable”*
**Color**2%
*“Very pleased with purchase they are a nice colour”*
### **What buyers complain about **
**Smell**26%
*“Bad smell”*
**Quality-Overall**19%
*“Very Garbage”*
**Weight Heavy**8%
*“Too heavy for a woman to use”*
**Material Quality**4%
*“they were made off a very low standard of materials used for that product I put them in the garbage”*
**Rubber Quality**4%
*“The rubberised coating has split already”*
**Product Condition**2%
*“was supposed to be new but looked heavily used not happy”*
**Color**2%
*“These are fit for purpose bit not the colour as sold”*
**Size-Overall**2%
*“These are fit for purpose bit not the colour as sold”*
**Scratch Resistance**1%
*“Many scratches awell with obvious factory work all over it with metal sticking out”*
### **Top return reasons **
**Weight Heavy**52%
**Size-Overall**11%
**Weight Light**7%
**Smell**5%
**Advertised Vs Actual Product**3%
**Value For Money**3%
**Defective Material/Parts**3%
**Quality-Overall**3%
**Rubber Quality**2%
**Product Condition**2%
## **Common questions**
- **Is 4kg dumbbells pair profitable to sell on Amazon United Kingdom?**
- The niche generates £198K/yr across 26 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is +8.6%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the 4kg dumbbells pair niche?**
- 14 brands and 19 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in 4kg dumbbells pair?**
- Top complaints mined from reviews: Smell, Quality-Overall, Weight Heavy. The return rate is 0.4%.
- **When does demand for 4kg dumbbells pair peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the 4kg dumbbells pair niche?**
- Listings span £6.78–£64.01; the average listing price is £16.53 (sweet spot $15–$100). The average incumbent carries 3,963 reviews — the moat a new listing must climb.
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