Is adjustable dumbbells 40kg profitable to sell on Amazon United Kingdom?

The niche generates £74K/yr across 15 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +15.8%. Flapen's verdict: Skip it (38/100).

How competitive is the adjustable dumbbells 40kg niche?

9 brands and 13 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 88% of demand.

What do buyers complain about in adjustable dumbbells 40kg?

Top complaints mined from reviews: Durability, Smell, Strength. The return rate is 0.4%.

What does it cost to enter the adjustable dumbbells 40kg niche?

Listings span £29.79–£302.88; the average listing price is £169.97 (sweet spot $15–$100). The average incumbent carries 182 reviews — the moat a new listing must climb.

adjustable dumbbells 40kg

Skip it

Weak search conversion (0.5%) — this niche doesn't clear our bar today.

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Review moat

Great181.67

avg incumbent reviews — the moat a new listing must climb

Avg price

Good£169.97

avg listing price — sweet spot $15–$100

Growth

Okay+15.8%

90-day search growth — must beat 0% to launch

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay88%

top-5 brand share — brands hold most of the demand

Price range

Okay£29.79–£302.88

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Bad72%

top-5 click share — a locked-up shelf

Market size

Bad£74K

£74K/yr · 85K searches

Conversion

Bad0.5%

search→purchase rate — share of searches ending in a sale

Signals Low Review Barrier High Price Out of Stock

According to Flapen's Amazon United Kingdom niche tracking, adjustable dumbbells 40kg is a £74K/yr Amazon United Kingdom market (85K searches/yr). The top 5 brands hold 88% of demand. Verdict: Skip it — 38/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

adjustable dumbbells 40kg market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: £42K–£85K; units × avg price
Conversion rate: 0.5%
Avg BSR: #240
Page quality: 0%
Prime: 27%
Sponsored: 80%
Out of stock: 16.2%
Avg brand age: 44 months
Avg seller age: 198 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

Top-5 brand share

88%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

BRAINGAIN47%
Strongway18%
Amazon Basics10%
HAKENO7%
LSLIFE6%
Yaheetech5%
Open — no brand owns it (3 brands, 7%)

Demand

Weekly Amazon search volume, last 34 weeks — +15.8% search growth over the last 90 days.

Open Trend

Top adjustable dumbbells 40kg search terms

adjustable dumbbells 40kg24K/yr +30.4%0.2% conv.
40kg adjustable dumbbell set16K/yr -3.9%0.3% conv.
adjustable dumbbells 40kg pair12K/yr +22.3%0.3% conv.
primal personal series 34kg adjustable dumbbell adjustable dumbbell single5K/yr +29.3%0.1% conv.
adjustable dumbbells 10kg5K/yr +61.4%0.1% conv.
adjustable dumbbells 50kg6K/yr +11.4%0.0% conv.
braingain adjustable dumbbells4K/yr +35.9%1.7% conv.
40 kg dumbbells pair3K/yr +19.5%0.1% conv.
noübell 2-32kg adjustable dumbbell pair4K/yr -38.3%0.0% conv.
braingain3K/yr -14.8%1.5% conv.

All search terms

Top adjustable dumbbells 40kg 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

24kg Adjustable Dumbbell Pair 15-in-1 Weight Settings Smart-Click Tech

BRAINGAIN£170.964.4★274 rev

Strongway Adjustable Dumbbell Pair with Stand (40KG) For Home gym

Strongway£302.885.0★3 rev

Adjustable Dumbbells 40kg Pair 17-in-1 SmartBells 1-Second Twist Handle

BRAINGAIN£295.154.5★92 rev

Amazon Basics Rubber Encased Hex Dumbbell Weights Set 10 kg Black

Amazon Basics£29.794.6★736 rev

HAKENO 2 x 24 kg / 40 kg Adjustable Dumbbells 15 in 1 Dumbbell Set Adjustable Space-saving Dumbbells Strength Training and Home Training Variable Weights Space Saving (24-40 kg)

HAKENO£164.864.4★60 rev

Newest

by launch date

Adjustable Dumbbells 40kg Pair 17-in-1 SmartBells 1-Second Twist Handle

BRAINGAIN£295.1592 rev

7mo ago

Strongway Adjustable Dumbbell Pair with Stand (40KG) For Home gym

Strongway£302.883 rev

10mo ago

Strongway Adjustable Dumbbell Pair with Stand (32KG) For Home gym

Strongway£273.263 rev

10mo ago

Amazon Basics Adjustable Dumbbell 12 Weight Settings from 3kg to 24kg Single Dumbbell for Home Gym Strength Training Workout Black

Amazon Basics£70.25106 rev

12mo ago

LSLIFE 40KG Adjustable Dumbbells Dumbbells Set for Saving Place Adjustable Dumbbell Weights with Safety Locking Non-Slip Handle Home Gym Strength Training (Blue-Pair Style 1-40KG)

LSLIFE£248.4510 rev

1y ago

What buyers say about adjustable dumbbells 40kg

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall23%

“Overall, good product for the price,”

Value For Money21%

“Excellent value for money”

Ease Of Use9%

“Very easy to use”

Adjustability/Rotatability/Reclining7%

“Adjustable dumbbells”

Weight Light4%

“Great starter weights with detachable weights so start light then add more to heavier - great idea”

Durability3%

“ive been using them for a few months now with no issues”

Grip3%

“great grip comfortable”

Exercise/Sports Suitability3%

“Brilliant Dumbbells”

Weight Heavy3%

“not a lot more to say about them really other than to say they are heavy”

Comfort-Overall3%

“Comfy, good grip and very easy to use”

What buyers complain about

Durability15%

“broke after 9 months of use”

Smell13%

“smell a bit funny”

Strength9%

“Yes they are a little chunkier than normal dumbbells”

Quality-Overall8%

“Cheap and poorly built”

Weight Heavy6%

“They are quite bulky”

Size-Overall6%

“This item is not fit for purpose”

Ease Of Use6%

“If you plan to do shoulder or bench/incline presses and lift heavy, the technique where you first balance them on your thighs and kick them up is extremely difficult because of the narrow sides”

Value For Money6%

“Not worth the money”

Instructions/User Manual/Troubleshooting3%

“Slightly disapointed that the instruction book was not quite the nice colourful one indicated in the advertising blurb”

Balance/Stability3%

“Very fragile stand”

Top return reasons

Weight Heavy20%

Size-Overall16%

Defective Material/Parts12%

Quality-Overall8%

Advertised Vs Actual Product7%

Weight Light6%

Functionality-Overall4%