Is headset spacers profitable to sell on Amazon United States?

The niche generates $58K/yr across 16 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is +32.9%. Flapen's verdict: Skip it (43/100).

How competitive is the headset spacers niche?

12 brands and 18 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 78% of demand.

What do buyers complain about in headset spacers?

Top complaints mined from reviews: Advertised Vs Actual Product, Functionality-Overall, Quality-Overall. The return rate is 2.1%.

When does demand for headset spacers peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the headset spacers niche?

Listings span $4.71–$20.37; the average listing price is $8.32 (sweet spot $15–$100). The average incumbent carries 585 reviews — the moat a new listing must climb.

Headset Spacers

Skip it

A small market ($58K/yr) — this niche doesn't clear our bar today.

Conversion

Great9.5%

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

Review moat

Good584.56

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.1%

return rate — above 5% kills the launch gate

Growth

Good+32.9%

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

Brand share

Okay78%

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

Price range

Okay$4.71–$20.37

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

Avg price

Bad$8.32

avg listing price — sweet spot $15–$100

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad76%

top-5 click share — a locked-up shelf

Market size

Bad$58K

$58K/yr · 73K searches

Is headset spacers profitable on Amazon?

According to Flapen's Amazon United States niche tracking, headset spacers is a $58K/yr Amazon United States market (73K searches/yr). The top 5 brands hold 78% of demand. Verdict: Skip it — 43/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

headset spacers market size & sales

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

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $50K–$67K; units × avg price
Conversion rate: 9.5%
Avg BSR: #23
Page quality: 0%
Prime: 100%
Sponsored: 94%
Out of stock: 1.7%
Avg brand age: 46 months
Avg seller age: 203 days

Competition: brands, sellers & click share

The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.

Brands

12 falling

Sellers

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

14%

Sumind27%
Kbrotech17%
Bruislard13%
DSCMLIS13%
PLATT8%
GooDay8%
Open — no brand owns it (6 brands, 14%)

headset spacers demand & seasonality

Weekly Amazon search volume, last 104 weeks — +32.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top headset spacers search terms shoppers use

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

headset spacers20K/yr +24.2%6.9% conv.
bike headset spacers12K/yr +19.0%5.2% conv.
stem spacers9K/yr +54.4%8.0% conv.
bike stem spacers8K/yr +56.3%9.3% conv.
headset spacers 1 1/88K/yr +38.1%9.4% conv.
headset spacer5K/yr +41.5%5.4% conv.
mtb stem spacers5K/yr +16.2%8.2% conv.
mtb headset spacers4K/yr +48.8%8.0% conv.
bike spacers3K/yr +20.8%8.2% conv.

All search terms

Top headset spacers 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Sumind 11 Pieces Bike Carbon Fiber Headset Spacer Bicycle 1-1/8 Inch 20 15 10 5 3 2 1 mm 7 Size

Sumind$9.454.7★4,272 rev

Kbrotech Bicycle Headset Spacer Aluminium Alloy Bike Stem Headset Spacers Fork Washer Fit for 1 1/8-Inch Stem 2mm 5mm 10mm (8pieces) (Aluminum Alloy)

Kbrotech$6.514.8★1,313 rev

Bruislard 8 PCS Bicycle Headset Spacer 4 Sizes Aluminium Alloy Bike Handlebar Stem Spacers Threadless Fork Washer Fit for 1 1/8-Inch Stem 2mm 3mm 5mm 10mm

Bruislard$6.444.7★76 rev

DSCMLIS 11PCS Bike Carbon Fiber Headset Spacers Matte Finish Fits 1-1/8 Inch Stem for MTB Road Bicycle Handlebar Stems (15/10/5/3/2/1mm) 6 Sizes

DSCMLIS$6.014.6★88 rev

12 PCS Bicycle Headset Spacer Bike Handlebar Stem Spacers Threadless Aluminum Alloy Headset Stem Spacer Set Fit 1 1/8-Inch Stem For MTB BMX Mountain Road Bikes Cycling 2MM 3MM 5MM 10MM(Black)

GooDay$9.154.7★1,540 rev

Newest

by launch date

Elegaperma 8pcs Headset Spacers Stem Headset Spacers 1 1/8 Aluminum Alloy Bike Headsets Spacers for MTB BMX Road Bikes 2mm 3mm 5mm 10mm (Black)

Elegaperma$6.333 rev

6mo ago

Josojoou 12 PCS Bicycle Headset Spacer Aluminum Alloy Headset Spacers Four Sizes Bike Stem Spacers High Strength Free Combination Suitable for Mountain Bikes Road Bike (2mm 3mm 5mm 10mm)

Josojoou$6.3612 rev

10mo ago

DSCMLIS 11PCS Bike Carbon Fiber Headset Spacers Matte Finish Fits 1-1/8 Inch Stem for MTB Road Bicycle Handlebar Stems (15/10/5/3/2/1mm) 6 Sizes

DSCMLIS$6.0188 rev

10mo ago

Mihoutal 12 PCS Carbon Fiber Bike Headset Spacers Bike Stem Spacers 1 1/8 Inch 6 Sizes (1/2/3/5/10/15mm) High Strength Ultra Lightweight Impact Resistance for MTB Road Cruiser Electric Bike

Mihoutal$5.9784 rev

11mo ago

Bruislard 8 PCS Bicycle Headset Spacer 4 Sizes Aluminium Alloy Bike Handlebar Stem Spacers Threadless Fork Washer Fit for 1 1/8-Inch Stem 2mm 3mm 5mm 10mm

Bruislard$6.4476 rev

1y ago

What reviews say buyers love and hate about headset spacers

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

What buyers love

Size-Overall31%

“Fit great”

Quality-Overall15%

“Good quality”

Value For Money12%

“Price was fair”

Mounting8%

“Good set of carbon spacers”

Weight Light6%

“These rings are so impossibly light I am convinced they are forged from vacuum and pure hubris”

Advertised Vs Actual Product5%

“as advertised”

Color3%

“Liked the colour”

Ease Of Use3%

“Simple and effective”

Material Quality2%

“Is thankfully real carbon fibre”

Strength2%

“Exactly as they should be, strong”

What buyers complain about

Advertised Vs Actual Product22%

“Not carbon fiber as advertised”

Functionality-Overall22%

“didn't work”

Quality-Overall11%

“This is just a big set of cheap”

Material Quality11%

“They are aluminum, cheap and space”

Thickness11%

“it might bother you as it is quite thick”

Color11%

“Bad color”

Top return reasons

Size-Overall59%

Advertised Vs Actual Product9%

Functionality-Overall7%

Value For Money5%

Quality-Overall5%

Defective Material/Parts4%