Skip to content
39

ngk tr6

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Market size 18Growth 28Conversion 88Competition 0Returns 84Price range 95Avg price 95Brand share 0Review moat 93Quality gap 9

Avg price

Incredible$33.71

avg listing price — sweet spot $15–$100

Price range

Incredible$27.50–$40.44

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

Review moat

Great136.25

avg incumbent reviews — the moat a new listing must climb

Conversion

Great10.4%

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

Returns

Great1.6%

return rate — above 5% kills the launch gate

Growth

Okay+2.3%

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

Market size

Bad$72K

$72K/yr · 21K searches

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ngk tr6 is a $72K/yr Amazon United States market (21K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

ngk tr6 market data

Units sold / yr
3K–3K
avg 250–500/product
Revenue / yr
$84K–$101K
units × avg price
Conversion rate
10.4%
Avg BSR
#378
Page quality
0%
Prime
100%
Sponsored
50%
Out of stock
0.0%
Avg brand age
42 months
Avg seller age
177 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 falling

Sellers

24

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • NGK91%
  • 269 Motorsports9%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.3% search growth over the last 90 days.
500300Spike '24Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.6×

Top ngk tr6 search terms

  • ngk tr69K/yr
  • ngk tr6 spark plugs6K/yr
  • tr6 spark plugs5K/yr
All search terms

Top ngk tr6 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.

0%15%$11K30%$22K45%$32K60%$43K101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

What buyers say about ngk tr6

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

What buyers love

Quality-Overall40%

“Great quality as expected from NGK”

Value For Money40%

“Great value, I regap them”

Brightness/Shine/Glow10%

“Sparky”

Socket/Port/Plug10%

“Good spark plugs”

What buyers complain about

Socket/Port/Plug100%

“Gap your plugs correctly”

Top return reasons

Size-Overall42%
Compatibility-Overall11%
Defective Material/Parts11%
Advertised Vs Actual Product8%
Product Condition6%
Functionality-Overall6%
Socket/Port/Plug4%
Motor Issues3%
Connectivity-Overall3%
Design-Overall3%

Common questions

Is ngk tr6 profitable to sell on Amazon United States?
The niche generates $72K/yr across 4 tracked products. 90-day search growth is +2.3%. Flapen's verdict: Skip it (39/100).
How competitive is the ngk tr6 niche?
2 brands and 24 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ngk tr6?
Top complaints mined from reviews: Socket/Port/Plug. The return rate is 1.6%.
When does demand for ngk tr6 peak?
Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the ngk tr6 niche?
Listings span $27.50–$40.44; the average listing price is $33.71 (sweet spot $15–$100). The average incumbent carries 136 reviews — the moat a new listing must climb.