ngk tr6
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$33.71avg listing price — sweet spot $15–$100
Price range
Incredible$27.50–$40.44cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great136.25avg 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 6% 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
Competition
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%
Open market
0%
- NGK91%
- 269 Motorsports9%
- Open — no brand owns it (0%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Spark Plugs Set of 8 - NGK TR6 for 1997-2013 C5 Z06 Grand Sport Corvette
NGK$32.494.8★57 rev
NGK 4177 TR6 V-Power Premium Copper Core Spark Plugs Set Of 8
NGK$34.395.0★25 rev
NGK 4177 TR6 V-Power Premium Copper Spark Plugs Set Of 8
269 Motorsports$40.444.8★65 rev
NGK 4177 PK8 Spark Plugs
NGK$27.504.8★398 rev
Newest
by launch dateNGK 4177 TR6 V-Power Premium Copper Core Spark Plugs Set Of 8
NGK$34.3925 rev
NGK 4177 TR6 V-Power Premium Copper Spark Plugs Set Of 8
269 Motorsports$40.4465 rev
NGK 4177 PK8 Spark Plugs
NGK$27.50398 rev
Spark Plugs Set of 8 - NGK TR6 for 1997-2013 C5 Z06 Grand Sport Corvette
NGK$32.4957 rev
Trending
90-day click momentumDemand & seasonality
Weekly Amazon search volume, last 104 weeks — +2.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.6×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality as expected from NGK”
“Great value, I regap them”
“Sparky”
“Good spark plugs”
What buyers complain about
“Gap your plugs correctly”