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

Is adjustable dumbbells 40kg profitable on Amazon?

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 size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

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: brands, sellers & click 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%)

adjustable dumbbells 40kg demand & seasonality

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

Open Trend

Top adjustable dumbbells 40kg search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

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 & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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 reviews say buyers love and hate 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%