Is honda gx390 pull start assembly profitable to sell on Amazon United States?

The niche generates $1.4M/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +10.2%. Flapen's verdict: Worth a look (52/100).

How competitive is the honda gx390 pull start assembly niche?

10 brands and 22 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 85% of demand.

What do buyers complain about in honda gx390 pull start assembly?

Top complaints mined from reviews: Quality-Overall, Durability, Functionality-Overall. The return rate is 1.8%.

When does demand for honda gx390 pull start assembly peak?

Demand peaks in Apr–May; the busiest month runs 3.9× the quietest.

What does it cost to enter the honda gx390 pull start assembly niche?

Listings span $14.85–$1345.42; the average listing price is $195.03 (sweet spot $15–$100). The average incumbent carries 255 reviews — the moat a new listing must climb.

honda gx390 pull start assembly

Worth a look

Shows a thin review moat (255 avg reviews), but prices mostly outside the sweet spot ($14.85–$1345.42) keeps it on the watch list.

Review moat

Great254.69

avg incumbent reviews — the moat a new listing must climb

Market size

Great$1.4M

$1.4M/yr · 80K searches

Conversion

Great8.8%

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

Returns

Great1.8%

return rate — above 5% kills the launch gate

Avg price

Okay$195.03

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+10.2%

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

Brand share

Okay85%

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

Competition

Bad78%

top-5 click share — a locked-up shelf

Price range

Bad$14.85–$1345.42

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

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, honda gx390 pull start assembly is a $1.4M/yr Amazon United States market (80K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 52/100.

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

honda gx390 pull start assembly market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $1.2M–$1.6M; units × avg price
Conversion rate: 8.8%
Avg BSR: #431
Page quality: 0%
Prime: 92%
Sponsored: 69%
Out of stock: 0.0%
Avg brand age: 45 months
Avg seller age: 202 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 falling

Sellers

Top-5 brand share

85%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

Honda25%
1PZ22%
YAMAKATO16%
KINDZA14%
Dalom8%
Ruma8%
Open — no brand owns it (4 brands, 8%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +10.2% search growth over the last 90 days.

Peak months: Apr, May · busiest ÷ quietest = 3.9×

Open Trend

Top honda gx390 pull start assembly search terms

honda gx39018K/yr +10.8%1.6% conv.
honda gx390 pull start assembly12K/yr +12.3%14.1% conv.
gx3909K/yr +8.6%1.3% conv.
honda gx390 parts9K/yr -11.0%1.1% conv.
gx390 pull start assembly6K/yr +25.2%16.0% conv.
honda gx390 engine6K/yr -1.6%0.9% conv.
honda gx 390 pull start assembly6K/yr +13.6%15.9% conv.
honda gx390 pull cord4K/yr +46.2%5.3% conv.
honda gx 3906K/yr +13.8%2.4% conv.
honda gx390 pull start2K/yr +30.6%6.4% conv.

All search terms

Top honda gx390 pull start assembly 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★)1 product missing review or click data not plotted

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Honda GX390 Engine Standard 1 Crank Electric Start GX390UT2XQAE

Honda$922.084.5★67 rev

1PZ 2QX-SG6 Recoil Starter Pull Start Replacement for Honda GX340 GX390 GX610 GX620 11hp 13hp 28400-ZEE3-W01ZA Generator Replaces

1PZ$16.614.3★266 rev

YAMAKATO GX340 GX390 Pull Start Recoil Starter Assembly for Honda GX 340 GX 390 389 420 439 cc 11 13 hp Generator Replaces 28400-ZE3-W01ZA Pull Cord Rope Aftermarket

YAMAKATO$18.844.6★579 rev

Dalom GX390 Pull Start Recoil Starter Assembly for Honda GX 390 GX340 11hp 13hp Generator Engine Parts Replaces 28400-ZE3-W01ZA

Dalom$14.924.3★845 rev

KINDZA Genuine Recoil Starter Assy 28400-Z5T-305ZA with Genuine Emblem 87521-Z5T-000 for Honda GX390 GX360 GX340 Engines

KINDZA$59.664.7★8 rev

Newest

by launch date

KINDZA Recoil Starter for Honda GX390 GX340 389 420 439 cc 11 13 hp Generator Replaces 28400-ZE3-W01ZA 28400-Z5T-305ZA with OEM Emblem GX390 Recoil Starter Bolts and Rope

KINDZA$25.2816 rev

8mo ago

KINDZA Recoil Starter for Honda GX390 GX340 389 420 439 cc 11 13 hp Generator Replaces 28400-ZE3-W01ZB 28400-Z5T-305ZB Black with OEM Emblem GX390 Recoil Starter Bolts and Rope

KINDZA$25.030 rev

8mo ago

KINDZA Genuine Recoil Starter Assy 28400-Z5T-305ZA with Genuine Emblem 87521-Z5T-000 for Honda GX390 GX360 GX340 Engines

KINDZA$59.668 rev

1y ago

Automost GX390 Pull Start Assembly Recoil Starter for Honda GX340 GX390 11hp 13hp 420cc Engine Parts Generator Pressure Washer Lawn Mower Pull Cord Replacement

Automost$17.9756 rev

1y ago

TURBOTUNITY GX390 Recoil Starter Pull Start for Honda GX340 GX610 GX620 11hp 13hp 28400-ZE3-W01 28400-ZE3-W01ZA and Clones 339c 389cc 420cc 439cc 459cc Red for Pressure Washers Generators etc.

TURBOTUNITY$15.9375 rev

2y ago

What buyers say about honda gx390 pull start assembly

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

What buyers love

Quality-Overall23%

“Machine quality is top notch”

Pressure19%

“great pressure”

Size-Overall12%

“Correct fit”

Value For Money9%

“Worth every cent”

Strength8%

“looks very strong”

Assembly/Installation5%

“Installation took just a minute”

Motor Power4%

“Works for my motor”

Efficiency2%

“Works perfectly”

Durability2%

“Built To Last”

Advertised Vs Actual Product2%

“Works as it should”

What buyers complain about

Quality-Overall15%

“Cheaply Made”

Durability14%

“It breaks super easy”

Functionality-Overall10%

“Would not start”

Size-Overall8%

“Does not fit exactly as the old one”

Instructions/User Manual/Troubleshooting7%

“the instructions for set up could be better”

Product Condition3%

“The machine almost seemed used”

Compatibility-Overall3%

“Not always compatible with models listed”

Defective Material/Parts3%

“Did not fit not very good missing parts”

Value For Money3%

“paid big money”

Assembly/Installation3%

“I believe the pump assembly should have been attached to the packaging with the necessary hardware to keep it secured inside the box during transportation”

Top return reasons

Size-Overall56%

Defective Material/Parts10%

Assembly/Installation9%

Compatibility-Overall4%

Functionality-Overall4%

Advertised Vs Actual Product4%

Durability3%

Motor Issues2%

Quality-Overall2%

Mounting2%

Common questions

Is honda gx390 pull start assembly profitable to sell on Amazon United States?: The niche generates $1.4M/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +10.2%. Flapen's verdict: Worth a look (52/100).
How competitive is the honda gx390 pull start assembly niche?: 10 brands and 22 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 85% of demand.
What do buyers complain about in honda gx390 pull start assembly?: Top complaints mined from reviews: Quality-Overall, Durability, Functionality-Overall. The return rate is 1.8%.
When does demand for honda gx390 pull start assembly peak?: Demand peaks in Apr–May; the busiest month runs 3.9× the quietest.
What does it cost to enter the honda gx390 pull start assembly niche?: Listings span $14.85–$1345.42; the average listing price is $195.03 (sweet spot $15–$100). The average incumbent carries 255 reviews — the moat a new listing must climb.