Is engine profitable to sell on Amazon United States?

The niche generates $45K/yr across 36 tracked products. 2 of 14 products launched in the last 360 days are still selling. 90-day search growth is +36.7%. Flapen's verdict: Worth a look (59/100).

How competitive is the engine niche?

32 brands and 37 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 51% of demand.

What do buyers complain about in engine?

Top complaints mined from reviews: Motor Issues, Quality-Overall, Durability. The return rate is 0.0%.

When does demand for engine peak?

Demand peaks in Nov–Dec; the busiest month runs 4.3× the quietest.

What does it cost to enter the engine niche?

Listings span $36.84–$187.45; the average listing price is $99.27 (sweet spot $15–$100). The average incumbent carries 50 reviews — the moat a new listing must climb.

engine

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Review moat

Incredible50.11

avg incumbent reviews — the moat a new listing must climb

Brand share

Great51%

top-5 brand share — no brand owns this niche

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Avg price

Great$99.27

avg listing price — sweet spot $15–$100

Competition

Good44%

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

Growth

Good+36.7%

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

Price range

Okay$36.84–$187.45

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

Market size

Bad$45K

$45K/yr · 153K searches

Conversion

Bad0.3%

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

Signals No Dominant Brand Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, engine is a $45K/yr Amazon United States market (153K searches/yr). The top 5 brands hold 51% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 59/100.

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

engine market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $25K–$50K; units × avg price
Conversion rate: 0.3%
Avg BSR: #1,836
Page quality: 0%
Prime: 8%
Sponsored: 97%
Out of stock: 3.4%
Avg brand age: 30 months
Avg seller age: 181 days

Competition & brand share

The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.

Brands

32 flat

Sellers

Top-5 brand share

51%

Top 20: 89%

Top-5 click share

44%

Top 20: 85%

Open market

44%

AKSDSGA20%
LUNUMAOS11%
BILT HARD8%
NEBEUUO7%
GrfceVue6%
Bamiyune5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +36.7% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 4.3×

Open Trend

Top engine search terms

mini bike engine60K/yr +50.2%0.1% conv.
mini bike motor37K/yr +34.3%0.1% conv.
5hp engine8K/yr +39.3%0.4% conv.
replacement outdoor power tool engines7K/yr +27.7%0.0% conv.
6.5 hp gas engine9K/yr +2.9%0.4% conv.
8hp engine7K/yr -0.8%0.1% conv.
minibike engine5K/yr +35.8%0.2% conv.
minibike motor5K/yr +57.7%0.1% conv.
mini bike engines5K/yr +33.9%0.1% conv.
6.5 hp engine4K/yr +43.2%0.4% conv.

All search terms

Top engine 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★)2 products missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

AKSDSGA 212CC Engine 7.5HP Gas Engine 4 Stroke Mini Bike Engine Motor with Single Cylinder&Air Cooling System 3600RPM Pull Start Motor for Water Pumps Generators Shaft 20mm/0.78in Diameter

AKSDSGA$56.374.1★6 rev

4-Stroke Gas Engine Motor 212cc 7.5HP Kart Engine Pull Start Mini Bike Engine Motor with Air Cooling System and Air Filter Portable Low Noise Single Cylinder Air Cooled Motor (Black)

LUNUMAOS$63.804.3★52 rev

BILT HARD 7HP Gas Engine Horizontal Shaft 212cc 4 Stroke OHV Industrial Grade Replacement Gas Motor Shaft 3/4 (19mm) Diameter 2-3/8 Long 3/16 Keyway

BILT HARD$139.814.6★642 rev

GrfceVue 7.5HP 4-Stroke Gas Engine 212CC Mini Bike Engine Horizontal Shaft Gas Powered Engine Pull Start Go Kart Motor Air Cooling for Go Kart Log Splitter Lawnmowers (Black)

GrfceVue$62.673.5★9 rev

AKSDSGA 212cc Engine 7.5HP Mini Bike Engine Motor 4 Stroke Single Cylinder Pull Start Gas Engine for Go Kart Water Pump Lawn Mover Compressors Shaft 0.78(20mm) Diameter

AKSDSGA$57.125.0★3 rev

Newest

by launch date

Bamiyune 212cc 7.5HP Gas Engine Replacement 4 Stroke OHV Horizontal Shaft Motor with Recoil Start 3600RPM Single Cylinder Small Engine for Go Kart Mini Bike Log Splitter Tiller Pressure Washer

Bamiyune$114.251 rev

3mo ago

49cc 50cc 2 Stroke Racing Engine Motor Dirt Bike Engine 7000RPM Gasoline Engine Single Cylinder Pull Rope Start Motor for Pocket Bike Mini Dirt Dirt Bike Pocket Bike ATV Scooters

NEBEUUO$39.3620 rev

4mo ago

212CC 7.5HP 4-Stroke Small Gas Engine 3600 RPM Horizontal Shaft Gas Motor High-Efficiency OHV Go Cart Motor for Go Kart Mini Bikes Log Splitters Tillers Pressure Washers

IOENC$47.912 rev

6mo ago

AKSDSGA 212CC Engine 7.5HP Gas Engine 4 Stroke Mini Bike Engine Motor with Single Cylinder&Air Cooling System 3600RPM Pull Start Motor for Water Pumps Generators Shaft 20mm/0.78in Diameter

AKSDSGA$56.376 rev

7mo ago

RYIRSHOH 15HP 420cc Gas Engine 4 Stroke OHV Gas Motor Pull Start Petrol Motor Recoil Starter Go Kart Engine Shaft 25mm Pull Start Petrol Engine for for Go-Kart Mini Bike Water Pumps

RYIRSHOH$173.620 rev

9mo ago

What buyers say about engine

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

What buyers love

Motor Power32%

“Nice motor”

Value For Money21%

“Excellent Value”

Quality-Overall9%

“Has been very reliable”

Size-Overall8%

“Perfect fit”

Advertised Vs Actual Product6%

“appears to be as described”

Soft Feel2%

“Runs smooth”

Strength2%

“Strong, reliable, and easy to install”

Ease Of Use2%

“Very simple”

Safety Standards2%

“safe riding experience all the time”

Fuel Efficiency1%

“great on gas”

What buyers complain about

Motor Issues15%

“NOT A GO KART ENGINE”

Quality-Overall14%

“junk”

Durability13%

“Blew up after running of 5 hours”

Size-Overall12%

“Bought 3/4 don't fit”

Functionality-Overall8%

“It does not run”

Value For Money4%

“Very cheap price”

Strength3%

“brakes wayyy to easy”

Instructions/User Manual/Troubleshooting3%

“the delivery Person could not follow instruction”

Thickness3%

“Gearcase was a little thicker”

Leak-Proof3%

“Only downfall is the gas cap doesnt seal well”

Top return reasons

Size-Overall43%

Functionality-Overall12%

Defective Material/Parts10%

Motor Issues7%

Advertised Vs Actual Product7%

Durability3%

Compatibility-Overall3%