---
title: "4 Inch Led Lights for Trucks — $142K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/4-inch-led-lights-for-trucks"
last_updated: "2026-08-09T09:47:05.172Z"
locale: en
meta:
description: "Niche score 55/100 · $142K/yr market · 106K searches/yr · $31.47 avg price. Soft demand (-1.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $142K/yr market · 106K searches/yr · $31.47 avg price. Soft demand (-1.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "4 Inch Led Lights for Trucks — $142K/yr Amazon US Niche (2026) - Flapen"
---
# **4 inch led lights for trucks**
**Worth a look**
Shows a sweet-spot price point ($31.47 avg), but soft demand (-1.7% this quarter) keeps it on the watch list.
Market size 31Growth 24Conversion 52Competition 73Returns 78Price range 81Avg price 95Brand share 57Review moat 88Quality gap 35
**Avg price**
**Incredible****$31.47**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****241.95**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$4.85–$61.50**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.8%**
return rate — above 5% kills the launch gate
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****4.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$142K**
$142K/yr · 106K searches
**Growth**
**Bad****-1.7%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, 4 inch led lights for trucks is a $142K/yr Amazon United States market (106K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4 inch led lights for trucks market data**
- **Units sold / yr**
- **5K–6K**
- avg 0–100/product
- **Revenue / yr**
- **$157K–$189K**
- units × avg price
- **Conversion rate**
- **4.3%**
- **Avg BSR**
- **#272**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **98%**
- **Out of stock**
- **5.0%**
- **Avg brand age**
- **57 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**20 **▼falling
**Sellers**
**54**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**41%**
Top 20: 78%
**Open market**
**25%**
- Partsam19% - Nilight19% - Partswcgg18% - LIGBT9% - PVerandio5% - EclatLights4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.7% search growth over the last 90 days.
2K2K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/automotive/4-inch-led-lights-for-trucks/trend)
## **Top 4 inch led lights for trucks search terms**
- **4 inch round led tail lights**19K/yr-15.2%4.6% conv. - **4 round led tail lights**15K/yr+9.3%4.2% conv. - **4 inch red led round trailer tail lights**9K/yr+31.6%6.1% conv. - **4 inch round led lights**10K/yr-19.0%1.3% conv. - **4 inch round trailer lights**6K/yr+35.4%2.6% conv. - **round tail lights**7K/yr-2.1%2.3% conv. - **4 inch led lights for trucks**9K/yr-13.1%2.3% conv. - **4 inch trailer lights**6K/yr-6.7%4.7% conv. - **round led tail lights**5K/yr-5.3%2.8% conv. - **4 inch round led stop turn tail lights**4K/yr-3.2%5.0% conv. [**All search terms **](https://flapen.com/research/us/automotive/4-inch-led-lights-for-trucks/search-terms)
## **Top 4 inch led lights for trucks 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%4%$6K8%$11K12%$17K16%$23K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nilight - TL-18 2PCS 4 Round Red LED Trailer Tail Lights w/Surface Mount Grommet Plugs IP67 Stop Brake Turn Tail Lights for Truck Trailer RV Jeep**Nilight**$18.03**4.7★944 rev](https://www.amazon.com/dp/B07Z4NL3TV) [2**4Pcs 4 Inch Round LED Trailer Tail Lights Red 24 LED Waterproof 4 Inch Round Led Stop Turn Brake Tail Lights Flush Mount for Trucks RV Include Lights Grommets 3-Prong Wire Pigtails 12V Sealed**Partswcgg**$26.85**4.6★360 rev](https://www.amazon.com/dp/B09Z2L8GSD) [3**LIGBT 4 Inch Red Led Round Trailer Tail Lights 4 led Trailer Stop Brake Turn Tail Lights 16 LED Waterproof led Trailer Lights for Boat Truck RV**LIGBT**$13.63**4.2★226 rev](https://www.amazon.com/dp/B0D9YFJRP4) [4**Partsam 8Pcs 4 Round Red LED Trailer Tail Light 4 Inch Round Led Stop Turn Tail Lights Brake Brake Trailer Lights for RV Trucks Rubber Grommets and 3-Prong Wire Pigtails Included**Partsam**$47.90**4.6★345 rev](https://www.amazon.com/dp/B08RNMTWJJ) [5**4Inch Round LED Trailer Lights - 4 PCS 24 High-Output LED Red Tail Lights Waterproof Sealed Flush Mount with Grommets & 3-Prong Pigtails - Stop/Turn/Brake Lights for Trucks RV Boat UTE UTV 12V**EclatLights**$25.98**4.5★39 rev](https://www.amazon.com/dp/B0FFBNVXDW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Ronybuy 10Pcs 4 Round Red Led Trailer Lights Trailer Tail Lights 4 Inch 12V Waterproof Stop Turn Brake Led Tail Lights Sealed Flush Mount for Trucks RV Rubber Grommets & 3-Prong Wire Plugs Included**Ronybuy**$49.60**23 rev6mo ago](https://www.amazon.com/dp/B0GF6XCWYQ) [**Jamarco 4 Inch Round LED Trailer Tail Lights Red 24 LED 12Pcs 4 Inch Round Led Stop Turn Tail Lights Brake Trailer Lights for RV Trucks Rubber Grommets and 3-Prong Wire Pigtails Included**Jamarco**$52.00**4 rev9mo ago](https://www.amazon.com/dp/B0FTYLPLT8) [**Partswcgg 12Pcs 4 Inch Round LED Trailer Tail Lights 24 LED Red Stop Turn Tail Lights Brake Trailer Lights White Backup Reverse Lights w/ 3-Prong Wire Pigtails Plug IP67 Waterproof 12V(8Red+4White)**Partswcgg**$50.12**13 rev11mo ago](https://www.amazon.com/dp/B0FKL98P54) [**Ronybuy 10Pcs 4 Inch Round Led Trailer Tail Lights Red 24 LED Trailer Lights Waterproof 4 Stop Turn Brake Led Tail Lights Sealed Flush Mount for Trucks RV Include Grommets 3-Prong Wire Plugs**Ronybuy**$51.70**65 rev1y ago](https://www.amazon.com/dp/B0FFLWZ69L) [**4Inch Round LED Trailer Lights - 4 PCS 24 High-Output LED Red Tail Lights Waterproof Sealed Flush Mount with Grommets & 3-Prong Pigtails - Stop/Turn/Brake Lights for Trucks RV Boat UTE UTV 12V**EclatLights**$25.98**39 rev1y ago](https://www.amazon.com/dp/B0FFBNVXDW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Ronybuy 10Pcs 4 Round Red Led Trailer Lights Trailer Tail Lights 4 Inch 12V Waterproof Stop Turn Brake Led Tail Lights Sealed Flush Mount for Trucks RV Rubber Grommets & 3-Prong Wire Plugs Included**Ronybuy**$49.60**4.6★**▲ 230%**](https://www.amazon.com/dp/B0GF6XCWYQ) [**Jamarco 4 Inch Round LED Trailer Tail Lights Red 24 LED 12Pcs 4 Inch Round Led Stop Turn Tail Lights Brake Trailer Lights for RV Trucks Rubber Grommets and 3-Prong Wire Pigtails Included**Jamarco**$52.00**5.0★**▲ 79%**](https://www.amazon.com/dp/B0FTYLPLT8) [**Ronybuy 10Pcs 4 Inch Round Led Trailer Tail Lights Red 24 LED Trailer Lights Waterproof 4 Stop Turn Brake Led Tail Lights Sealed Flush Mount for Trucks RV Include Grommets 3-Prong Wire Plugs**Ronybuy**$51.70**4.4★**▲ 79%**](https://www.amazon.com/dp/B0FFLWZ69L) [**Partsam 12Pcs 4 Inch Round Led Trailer Tail Lights Kit Red 24 LED Waterproof 4 Brake Stop Turn Tail Marker Trailer Lights Sealed Flush Mount for Truck RV Boat UTE UTV 12V Grommet Plug Included**Partsam**$61.50**4.6★**▲ 60%**](https://www.amazon.com/dp/B0F7RB34PS) [**Partswcgg 12Pcs 4 Inch Round LED Trailer Tail Lights 24 LED Red Stop Turn Tail Lights Brake Trailer Lights White Backup Reverse Lights w/ 3-Prong Wire Pigtails Plug IP67 Waterproof 12V(8Red+4White)**Partswcgg**$50.12**4.5★**▲ 44%**](https://www.amazon.com/dp/B0FKL98P54)
**~~View all trending →~~**
## **What buyers say about 4 inch led lights for trucks**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**38%
*“Nice and bright”*
**Quality-Overall**9%
*“The build quality feels solid and durable, and they seem like they will last a long time”*
**Assembly/Installation**9%
*“Looks great can't wait it install”*
**Value For Money**8%
*“price was reasonable”*
**Size-Overall**8%
*“Fit great”*
**Advertised Vs Actual Product**6%
*“works as advertised”*
**Durability**2%
*“They feel durable and work great”*
**Efficiency**2%
*“works great”*
**Socket/Port/Plug**2%
*“Works great and the added plugs made this even better”*
**Water Resistance**1%
*“the IP67 rating gives confidence that these lights are waterproof”*
### **What buyers complain about **
**Quality-Overall**13%
*“Low quality”*
**Brightness/Shine/Glow**9%
*“not bright enough”*
**Durability**8%
*“Don't last”*
**Functionality-Overall**6%
*“Not working”*
**Size-Overall**6%
*“Do not fit”*
**Instructions/User Manual/Troubleshooting**5%
*“No instruction. wire diagram”*
**Assembly/Installation**4%
*“Minor issue with installation”*
**Leak-Proof**4%
*“Both lights leaked”*
**Ease Of Use**4%
*“Hard getting in”*
**Water Resistance**3%
*“Not water proof”*
### **Top return reasons **
**Size-Overall**53%
**Compatibility-Overall**7%
**Functionality-Overall**6%
**Mounting**6%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**3%
**Brightness/Shine/Glow**3%
**Quality-Overall**3%
**Connectivity-Overall**2%
**Socket/Port/Plug**2%
## **Common questions**
- **Is 4 inch led lights for trucks profitable to sell on Amazon United States?**
- The niche generates $142K/yr across 43 tracked products. 2 of 7 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the 4 inch led lights for trucks niche?**
- 20 brands and 54 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in 4 inch led lights for trucks?**
- Top complaints mined from reviews: Quality-Overall, Brightness/Shine/Glow, Durability. The return rate is 1.8%.
- **When does demand for 4 inch led lights for trucks peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the 4 inch led lights for trucks niche?**
- Listings span $4.85–$61.50; the average listing price is $31.47 (sweet spot $15–$100). The average incumbent carries 242 reviews — the moat a new listing must climb.
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