---
title: "Honda Gn4 10w-40 — $765K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/honda-gn4-10w-40"
last_updated: "2026-08-10T19:37:47.004Z"
locale: en
meta:
description: "Niche score 53/100 · $765K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $765K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Honda Gn4 10w-40 — $765K/yr Amazon US Niche (2026) - Flapen"
---
# **honda gn4 10w-40**
**Worth a look**
Shows low returns (0.4%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 71Growth 45Conversion 83Competition 25Returns 98Price range 90Avg price 95Brand share 0Review moat 63Quality gap 11
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$38.52**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.47–$96.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$765K**
$765K/yr · 220K searches
**Review moat**
**Good****970.85**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+16.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****70%**
top-5 click share — a locked-up shelf
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, honda gn4 10w-40 is a $765K/yr Amazon United States market (220K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Apr–May–Jun. Verdict: Worth a look — 53/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **honda gn4 10w-40 market data**
- **Units sold / yr**
- **20K–25K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$770K–$963K**
- units × avg price
- **Conversion rate**
- **9.0%**
- **Avg BSR**
- **#428**
- **Page quality**
- **0%**
- **Prime**
- **55%**
- **Sponsored**
- **25%**
- **Out of stock**
- **1.9%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **147 days**
## **Competition & brand share**
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**56**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**0%**
- Honda93% - CYCLEMAX3% - Valvoline2% - STP1% - 4into11% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 84 weeks — +16.2% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Mar, Apr, May, Jun · busiest ÷ quietest = 10.3×
[**Open Trend **](https://flapen.com/research/us/automotive/honda-gn4-10w-40/trend)
## **Top honda gn4 10w-40 search terms**
- **honda oil**40K/yr+6.7%5.1% conv. - **honda 10w30 oil**20K/yr+26.0%8.5% conv. - **gn4 honda oil 10w-40**20K/yr+20.1%7.6% conv. - **honda gn4 10w40**13K/yr+24.2%9.8% conv. - **honda gn4 10w30**9K/yr+49.8%15.0% conv. - **honda motorcycle oil**14K/yr+39.9%5.6% conv. - **10w30 motorcycle oil**11K/yr+41.8%3.7% conv. - **gn4 honda oil 10w-30**11K/yr+34.9%12.4% conv. - **honda oil 10w30**8K/yr+38.1%8.8% conv. - **honda motor oil**8K/yr-2.2%3.8% conv. [**All search terms **](https://flapen.com/research/us/automotive/honda-gn4-10w-40/search-terms)
## **Top honda gn4 10w-40 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%5%$38K10%$76K15%$115K20%$153K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Set of 4 - Genuine Honda GN4 4-Stroke Motorcycle Oil - 10W-40 SJ - Fits Honda & Other Motorcycles**Honda**$39.04**4.9★114 rev](https://www.amazon.com/dp/B0DSK1279R) [2**Honda Pro Honda GN4 Motor Oil - 10W30-1 Gallon/-**Honda**$37.37**4.8★2,511 rev](https://www.amazon.com/dp/B00NO0QZMU) [3**Honda Pro Oils Honda GN4 Motor Oil - 10W30 - 4 Quarts - 08C35-A131M02**Honda**$38.74**4.9★138 rev](https://www.amazon.com/dp/B084G7Q4N9) [4**Honda Pro Honda GN4 Motor Oil - 10W30-1 Quart/-**Honda**$14.70**4.8★1,079 rev](https://www.amazon.com/dp/B00I87F5C0) [5**HONDA MOTOR OIL 10W30 QT (PACK OF 2)**Honda**$23.04**4.8★3,314 rev](https://www.amazon.com/dp/B01H2FWWSI)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Pro Honda GN4 10w-40 5 Quart SAE 4-Stroke Motorcycle Oil 08232-M99-L8JA1**Honda**$49.54**5 rev4mo ago](https://www.amazon.com/dp/B0GQD66L8J) [**Cyclemax Two Pack compatible with Honda GN4 Engine 10W-40 Oil 08C35-A141M01 Contains Two Quarts and a Funnel**CYCLEMAX**$26.52**16 rev2y ago](https://www.amazon.com/dp/B0CKJ8SG6B) [**Honda Pro Oils Honda GN4 Motor Oil - 10W30 - 4 Quarts - 08C35-A131M02**Honda**$38.74**138 rev6y ago](https://www.amazon.com/dp/B084G7Q4N9) [**Honda 08213-10W30 Oil - 12 oz (2 Pack)**Honda**$13.78**756 rev6y ago](https://www.amazon.com/dp/B083WPQ3N1) [**Honda GN4 10W-30 Motorcycle Oil - 2 Gallons**Honda**$67.68**269 rev6y ago](https://www.amazon.com/dp/B083VXRDQD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Pro Honda GN4 10w-40 5 Quart SAE 4-Stroke Motorcycle Oil 08232-M99-L8JA1**Honda**$49.54**5.0★**▲ 197%**](https://www.amazon.com/dp/B0GQD66L8J) [**Cyclemax Two Pack compatible with Honda GN4 Engine 10W-40 Oil 08C35-A141M01 Contains Two Quarts and a Funnel**CYCLEMAX**$26.52**4.9★**▲ 107%**](https://www.amazon.com/dp/B0CKJ8SG6B) [**Honda 08213-10W30 Oil - 12 oz (2 Pack)**Honda**$13.78**4.8★**▲ 97%**](https://www.amazon.com/dp/B083WPQ3N1) [**Set of 4 - Genuine Honda GN4 4-Stroke Motorcycle Oil - 10W-40 SJ - Fits Honda & Other Motorcycles**Honda**$39.04**4.9★**▲ 77%**](https://www.amazon.com/dp/B0DSK1279R) [**Honda Pro Oils Honda GN4 Motor Oil - 10W30 - 4 Quarts - 08C35-A131M02**Honda**$38.74**4.9★**▲ 74%**](https://www.amazon.com/dp/B084G7Q4N9)
**~~View all trending →~~**
## **What buyers say about honda gn4 10w-40**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“A quality oil from a trusted brand”*
**Value For Money**18%
*“Good price”*
**Lubrication**17%
*“Good lubricant”*
**Advertised Vs Actual Product**15%
*“As advertised”*
**Efficiency**3%
*“It works great”*
**Motor Power**3%
*“My Engine loves it”*
**Ease Of Use**3%
*“Easy to use”*
**Size-Overall**3%
*“a great fit for my bike”*
**Fuel Efficiency**2%
*“EASE OF INSTALLATION FUEL EFFICIENCY IMPROVED FIT WAS ON POINT”*
**Leak-Proof**1%
*“Great for my Honda trx420FPA none of the bottles were leaking”*
### **What buyers complain about **
**Value For Money**21%
*“Could be a little bit cheaper on the price”*
**Size-Overall**13%
*“Too small amount”*
**Quality-Overall**6%
*“Its not worth using cheap brands”*
**Storage Capacity**6%
*“I dont have room for 8 quarts of oil”*
**Advertised Vs Actual Product**6%
*“same amount just not as advertised”*
**Functionality-Overall**6%
*“Bad results for shifting or neutral finding”*
**Lubrication**6%
*“Its oil”*
**Leak-Proof**6%
*“It came damaged and leaking oil”*
**Heating**3%
*“Before, it would stop as soon as it started, which was very troublesome, especially when it was cold”*
**Ease Of Use**3%
*“hard to get in my area”*
### **Top return reasons **
**Value For Money**19%
**Compatibility-Overall**18%
**Lubrication**16%
**Leak-Proof**12%
**Advertised Vs Actual Product**12%
**Functionality-Overall**5%
**Defective Material/Parts**4%
**Size-Overall**4%
**Motor Issues**3%
**Product Condition**2%
## **Common questions**
- **Is honda gn4 10w-40 profitable to sell on Amazon United States?**
- The niche generates $765K/yr across 20 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +16.2%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the honda gn4 10w-40 niche?**
- 5 brands and 56 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in honda gn4 10w-40?**
- Top complaints mined from reviews: Value For Money, Size-Overall, Quality-Overall. The return rate is 0.4%.
- **When does demand for honda gn4 10w-40 peak?**
- Demand peaks in Mar–Apr–May–Jun; the busiest month runs 10.3× the quietest.
- **What does it cost to enter the honda gn4 10w-40 niche?**
- Listings span $9.47–$96.57; the average listing price is $38.52 (sweet spot $15–$100). The average incumbent carries 971 reviews — the moat a new listing must climb.
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