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50

5x4.75 wheel spacers

Worth a look

Shows a sweet-spot price point ($55.97 avg), but a small market ($47K/yr) keeps it on the watch list.

Market size 12Growth 32Conversion 41Competition 78Returns 14Price range 89Avg price 91Brand share 67Review moat 86Quality gap 65

Avg price

Great$55.97

avg listing price — sweet spot $15–$100

Price range

Great$22.37–$105.78

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

Review moat

Great273.88

avg incumbent reviews — the moat a new listing must climb

Competition

Great37%

top-5 click share — an open shelf

Brand share

Good65%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Okay3.3%

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

Growth

Okay+5.8%

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

Returns

Bad8.7%

return rate — above 6% kills the launch gate

Market size

Bad$47K

$47K/yr · 25K searches

Competition

Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.

Brands

16 falling

Sellers

21

Top-5 brand share

65%

Open market

29%

  • ECCPP26%
  • Customadeonly12%
  • Orion Motor Tech11%
  • GDSMOTU9%
  • Richeer7%
  • EVIL ENERGY6%

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%$1K6%$3K9%$4K12%$6K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

All 40 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +5.8% search growth over the last 90 days.
600400Spike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Reviews

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

What buyers love

Size-Overall43%

“This was a good fit”

Quality-Overall30%

“Spacers seem to be of good quality”

Advertised Vs Actual Product7%

“Works as intended”

Value For Money7%

“I think for the money these are a great value”

Durability3%

“Durable”

Efficiency3%

“Worked Well”

Assembly/Installation3%

“The installation was straightforward”

What buyers complain about

Size-Overall29%

“Another one is slightly larger than the rest just ultra disappointed”

Quality-Overall27%

“Cheap studs”

Durability8%

“broke when torquing down”

Compatibility-Overall8%

“Bad pairing”

Wheel Quality8%

“Back wheels needed more of a 1.5inch to be in line with rear fender for 2002 Camaro v6”

Advertised Vs Actual Product6%

“picture doesnt show it”

Assembly/Installation4%

“Shattered upon install”

Thickness4%

“For a 1 spacer it has too thin a wall”

Value For Money3%

“Saving a few bucks cost me”

Top return reasons

Size-Overall49%
Thickness10%
Compatibility-Overall9%
Wheel Quality7%
Advertised Vs Actual Product5%
Functionality-Overall5%
Width3%
Defective Material/Parts2%
Quality-Overall1%
Mechanism Issues1%