---
title: "Harley Transmission Oil — $191K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/harley-transmission-oil"
last_updated: "2026-08-11T00:07:14.034Z"
locale: en
meta:
description: "Niche score 50/100 · $191K/yr market · 73K searches/yr. Brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $191K/yr market · 73K searches/yr. Brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Harley Transmission Oil — $191K/yr Amazon US Niche (2026) - Flapen"
---
# **harley transmission oil**
**Worth a look**
Shows low returns (0.5%), but brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list.
Market size 38Growth 55Conversion 61Competition 55Returns 98Price range 58Avg price 94Brand share 3Review moat 62Quality gap 14
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$48.94**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****1,027.48**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$13.19–$160.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+27.6%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$191K**
$191K/yr · 73K searches
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****99%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, harley transmission oil is a $191K/yr Amazon United States market (73K searches/yr). The top 5 brands hold 99% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **harley transmission oil market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **$245K–$294K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#451**
- **Page quality**
- **0%**
- **Prime**
- **83%**
- **Sponsored**
- **52%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **89 months**
- **Avg seller age**
- **144 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **▼falling
**Sellers**
**124**
**Top-5 brand share**
**99%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 89%
**Open market**
**0%**
- Red Line57% - Bel-Ray34% - Twisted Choppers3% - Lucas Oil3% - 360 Twin2% - Maxima1%
## **Demand**
Weekly Amazon search volume, last 44 weeks — +27.6% search growth over the last 90 days.
2K2KSpike '25Spike '26Sep '25Oct '25Dec '25Feb '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/automotive/harley-transmission-oil/trend)
## **Top harley transmission oil search terms**
- **redline oil**31K/yr-1.3%2.5% conv. - **harley transmission oil**7K/yr+96.7%7.9% conv. - **red line oil**8K/yr+25.9%2.3% conv. - **belray 20w50 motorcycle oil**6K/yr+56.0%8.6% conv. - **bel ray 20w50 v-twin motorcycle oil**5K/yr+52.4%6.8% conv. - **harley davidson transmission oil**3K/yr+73.5%6.5% conv. - **redline transmission fluid**6K/yr+19.7%3.1% conv. - **redline transmission oil for harley davidson**4K/yr+52.0%14.1% conv. - **harley davidson transmission fluid**3K/yr+55.0%4.5% conv. [**All search terms **](https://flapen.com/research/us/automotive/harley-transmission-oil/search-terms)
## **Top harley transmission oil 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%$10K10%$19K15%$29K20%$38K101001K10K 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**Red Line 42804 Full Synthetic Gear Oil V-Twin Transmission Oil with Shockproof - 1 Quart**Red Line**$23.08**4.9★1,903 rev](https://www.amazon.com/dp/B004X973EA) [2**Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB**Bel-Ray**$13.19**4.8★756 rev](https://www.amazon.com/dp/B005K60FJK) [3**Bel-Ray V-Twin SAE 20W-50 Mineral Engine Oil | 4 Liter | SKU: 96905-BT4**Bel-Ray**$33.23**4.8★272 rev](https://www.amazon.com/dp/B006UET3CG) [4**Red Line 90226 20W50 Powersport Motor Oil V-Twin - 1 Powerpack Kit**Red Line**$148.29**4.8★2,583 rev](https://www.amazon.com/dp/B0038385H6) [5**Bel-Ray 96910-BT4 Motor Oils 20W-50 4 Liter**Bel-Ray**$39.24**4.8★238 rev](https://www.amazon.com/dp/B007GR5LTA)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bel-Ray Synthetic 3-Hole Complete Oil Change Kit Compatible with Harley-Davidson Big Twin and Sportster 1984-Up 1984-2017 Harley Twin Cam & Evolution Chrome Oil Filter**Twisted Choppers**$122.18**12 rev1y ago](https://www.amazon.com/dp/B0F69G6DWH) [**Red Line 42804 V-Twin Transmission Oil with Shockproof - 4 Quarts**Red Line**$84.21**1,903 rev1y ago](https://www.amazon.com/dp/B00HUSNOCQ) [**360 Twin 80W-90 High-Performance Transmission Lubricant for V-Twin Motorcycles Premium Gear Oil for Harley-Davidson Superior Wear Protection & Smooth Shifting**360 Twin**$13.82**121 rev3y ago](https://www.amazon.com/dp/B0CB9BHSB4) [**Red Line 50604 MT-LV 70W/75W GL-4 High-Performance Full Synthetic Gear Oil Lubricant for Manual Transmissions & Transaxles - 1 Quart**Red Line**$22.97**485 rev5y ago](https://www.amazon.com/dp/B07V1VW32J) [**Red Line 90226 Big Twin 20w50 Power Pack Oil Package with K&N High Performance Oil Filter (Complete Kit Black Filter)**Red Line**$160.99**513 rev7y ago](https://www.amazon.com/dp/B07MWCC8ZC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Bel-Ray 96900-BT1 Big-Twin Transmission Oil - 85W140-1L.**Bel-Ray**$19.91**4.7★**▲ 64%**](https://www.amazon.com/dp/B07DM7K74N) [**Red Line 90226 Big Twin 20w50 Power Pack Oil Package with K&N High Performance Oil Filter (Complete Kit Black Filter)**Red Line**$160.99**4.7★**▲ 46%**](https://www.amazon.com/dp/B07MWCC8ZC) [**Lucas Oil 10791 Synthetic SAE 75W-140 V-Twin Gear Oil - 1 Quart**Lucas Oil**$19.85**4.7★**▲ 41%**](https://www.amazon.com/dp/B0068C4S20) [**Red Line 50604 MT-LV 70W/75W GL-4 High-Performance Full Synthetic Gear Oil Lubricant for Manual Transmissions & Transaxles - 1 Quart**Red Line**$22.97**4.7★**▲ 24%**](https://www.amazon.com/dp/B07V1VW32J) [**Bel-Ray Big Twin Transmission Oil Liter 96900-BT1QB**Bel-Ray**$13.19**4.8★**▲ 23%**](https://www.amazon.com/dp/B005K60FJK)
**~~View all trending →~~**
## **What buyers say about harley transmission oil**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**32%
*“good quality, good price, fast shipping”*
**Lubrication**12%
*“Great lubrication”*
**Efficiency**10%
*“Works well”*
**Value For Money**10%
*“Worth buying”*
**Fuel Efficiency**10%
*“Better fuel economy”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Ease Of Cleaning**7%
*“Cleans good”*
**Ease Of Use**3%
*“Exactly What I Ordered And So Convenient”*
**Noise Level**1%
*“I read from others that it made the transmission quiet down”*
**Soft Feel**1%
*“this one hands down is the smoothest”*
### **What buyers complain about **
**Value For Money**24%
*“Not worth the price”*
**Noise Level**17%
*“Was running a bit louder”*
**Leak-Proof**8%
*“one of the containers was leaking oil”*
**Advertised Vs Actual Product**8%
*“NOT COMPLETE as advertised”*
**Size-Overall**4%
*“The oil filter that it came with was not the correct size”*
**Lubrication**4%
*“It does NOT lubricate the bearings well at all”*
**Functionality-Overall**4%
*“Unsure how effective it is”*
**Thin**4%
*“Seemed thinner than original”*
**Grip**4%
*“Its slippery”*
**Quality-Overall**4%
*“Hard to find, not cheap”*
### **Top return reasons **
**Leak-Proof**29%
**Compatibility-Overall**24%
**Value For Money**10%
**Advertised Vs Actual Product**8%
**Lubrication**8%
**Functionality-Overall**6%
**Fuel Efficiency**3%
**Size-Overall**2%
**Defective Material/Parts**2%
**Quality-Overall**2%
## **Common questions**
- **Is harley transmission oil profitable to sell on Amazon United States?**
- The niche generates $191K/yr across 29 tracked products. 90-day search growth is +27.6%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the harley transmission oil niche?**
- 6 brands and 124 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 99% of demand.
- **What do buyers complain about in harley transmission oil?**
- Top complaints mined from reviews: Value For Money, Noise Level, Leak-Proof. The return rate is 0.5%.
- **What does it cost to enter the harley transmission oil niche?**
- Listings span $13.19–$160.99; the average listing price is $48.94 (sweet spot $15–$100). The average incumbent carries 1,027 reviews — the moat a new listing must climb.
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