Is stihl fs91r carburetor profitable to sell on Amazon United States?

The niche generates $45K/yr across 16 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +122.5%. Flapen's verdict: Worth a look (70/100).

How competitive is the stihl fs91r carburetor niche?

13 brands and 21 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 68% of demand.

What do buyers complain about in stihl fs91r carburetor?

Top complaints mined from reviews: Functionality-Overall, Value For Money, Assembly/Installation. The return rate is 1.3%.

When does demand for stihl fs91r carburetor peak?

Demand peaks in Apr–May–Jun–Jul; the busiest month runs 5.4× the quietest.

What does it cost to enter the stihl fs91r carburetor niche?

Listings span $19.75–$57.87; the average listing price is $28.59 (sweet spot $15–$100). The average incumbent carries 38 reviews — the moat a new listing must climb.

stihl fs91r carburetor

Worth a look

Shows a thin review moat (38 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Review moat

Incredible37.81

avg incumbent reviews — the moat a new listing must climb

Growth

Incredible+122.5%

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

Conversion

Incredible12.3%

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

Avg price

Incredible$28.59

avg listing price — sweet spot $15–$100

Price range

Incredible$19.75–$57.87

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

Returns

Great1.3%

return rate — above 5% kills the launch gate

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Brand share

Good68%

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

Competition

Okay55%

top-5 click share — leaders hold, buyers still browse

Market size

Bad$45K

$45K/yr · 13K searches

Signals Trending Low Review Barrier

According to Flapen's Amazon United States niche tracking, stihl fs91r carburetor is a $45K/yr Amazon United States market (13K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 70/100.

Data updated Jul 16, 2026 · scored weekly · How we score niches

stihl fs91r carburetor market data

Units sold / yr: 2K–2K; avg 100–250/product
Revenue / yr: $43K–$57K; units × avg price
Conversion rate: 12.3%
Avg BSR: #1,816
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 2.3%
Avg brand age: 37 months
Avg seller age: 183 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 rising

Sellers

Top-5 brand share

68%

Top 20: 100%

Top-5 click share

55%

Top 20: 100%

Open market

25%

Mikatesi21%
HUZTL14%
Dakule13%
Eamonhigh12%
Stihl9%
Hipa7%

Demand & seasonality

Weekly Amazon search volume, last 54 weeks — +122.5% search growth over the last 90 days.

Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 5.4×

Open Trend

Top stihl fs91r carburetor 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

HUZTL FS 91 R Trimmer Carburetor Air Filter Kit for STIHL FS91R FS91 FC91 FS111 FC111 KM91R KM111R HT102 FC96 Trimmer Brushcutter 4180-120-0615 Carb

HUZTL$33.074.6★144 rev

Mikatesi FS91 FS91R Carburetor for Stihl 4180-120-0615 FS91 R FS111 FS89 HT102 HT103 FC91 FC96 KM91 KM111 FC111 Brushcutter Trimmer with 4180-007-1005 Valve Clearance Setting 41801410300Air Filter Kit

Mikatesi$30.144.4★29 rev

FS 111R Carburetor Replacement for Stihl FS91R KM91R FS91 FS111 FS89 HT102 HT103 KM111 Brushcutter Trimmer Engine 4180-120-0615 4180 120 0618 Carb with Air Filter Tune Up Kit

Eamonhigh$23.954.4★43 rev

Stihl FS91r carburetor FC91 FS111rx fc111 KM91R HT102 hl91 4180 120 0618 OEM silver

Stihl$57.874.6★36 rev

Dakule FS91R Carburetor with Valve Adjustment Kit for Stihl FS91 FS91R FS111 FS89 KM91R KM111R FC111 HT102 FC96 Trimmer Brushcutter Replace 4180-120-0615 Carb & Air Filter

Dakule$30.894.4★7 rev

Newest

by launch date

Hipa FS 91 R Carburetor Compatible with STIHL FS91 FS91R FC91 FS111 FC111 KM91R KM111 KM111R HT102 Trimmer Brushcutter Replace 4180 120 0615

Hipa$26.2810 rev

6mo ago

Dakule FS91R Carburetor with Valve Adjustment Kit for Stihl FS91 FS91R FS111 FS89 KM91R KM111R FC111 HT102 FC96 Trimmer Brushcutter Replace 4180-120-0615 Carb & Air Filter

Dakule$30.897 rev

1y ago

FS 111R Carburetor Replacement for Stihl FS91R KM91R FS91 FS111 FS89 HT102 HT103 KM111 Brushcutter Trimmer Engine 4180-120-0615 4180 120 0618 Carb with Air Filter Tune Up Kit

Eamonhigh$23.9543 rev

1y ago

FitBest Carburetor FS91 with Tune up Kits for Stihl FS89 FS89R FS91R FC91 FC96 FS111 FC111 FS111R FS111RX KM91 KM91R KM111R HT102 HT103 Trimmer Brushcutter 4180-120-0615 Carb

FitBest$19.7516 rev

2y ago

Stihl FS91r carburetor FC91 FS111rx fc111 KM91R HT102 hl91 4180 120 0618 OEM silver

Stihl$57.8736 rev

2y ago

What buyers say about stihl fs91r carburetor

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

What buyers love

Size-Overall21%

“Perfect fit”

Quality-Overall15%

“They are just as good as OEM at a fraction of the price”

Advertised Vs Actual Product13%

“Works as it should”

Value For Money12%

“saving so much money”

Assembly/Installation10%

“Installation is fairly simple”

Product Condition8%

“Runs like new”

Durability6%

“It lives”

Maintenance And Repair6%

“Repair kit”

Adjustability/Rotatability/Reclining5%

“needed no adjustments”

Measurement/Reading Accuracy3%

“The calibration tool was a huge saver, thanks”

What buyers complain about

Functionality-Overall33%

“Carburetor does not work”

Value For Money17%

“Not worth it”

Assembly/Installation17%

“just got time to install it”

Quality-Overall17%

“Junk”

Size-Overall17%

“The gas line included is not the correct size”

Top return reasons

Functionality-Overall25%

Advertised Vs Actual Product15%

Size-Overall14%

Defective Material/Parts13%

Leak-Proof5%

Mechanism Issues5%

Compatibility-Overall4%

Durability3%

Assembly/Installation2%

Fuel Efficiency2%

Common questions

Is stihl fs91r carburetor profitable to sell on Amazon United States?: The niche generates $45K/yr across 16 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +122.5%. Flapen's verdict: Worth a look (70/100).
How competitive is the stihl fs91r carburetor niche?: 13 brands and 21 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 68% of demand.
What do buyers complain about in stihl fs91r carburetor?: Top complaints mined from reviews: Functionality-Overall, Value For Money, Assembly/Installation. The return rate is 1.3%.
When does demand for stihl fs91r carburetor peak?: Demand peaks in Apr–May–Jun–Jul; the busiest month runs 5.4× the quietest.
What does it cost to enter the stihl fs91r carburetor niche?: Listings span $19.75–$57.87; the average listing price is $28.59 (sweet spot $15–$100). The average incumbent carries 38 reviews — the moat a new listing must climb.