---
title: "Seadoo — $113K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/seadoo"
last_updated: "2026-08-09T13:38:27.219Z"
locale: en
meta:
description: "Niche score 52/100 · $113K/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 52/100 · $113K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Seadoo — $113K/yr Amazon US Niche (2026) - Flapen"
---
# **seadoo**
**Worth a look**
Shows demand growing +145.8% this quarter, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 27Growth 96Conversion 86Competition 14Returns 86Price range 82Avg price 95Brand share 0Review moat 73Quality gap 21
**Growth**
**Incredible****+145.8%**
90-day search growth — must beat 0% to launch
**Avg price**
**Incredible****$23.06**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Price range**
**Great****$5.99–$60.37**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****599.2**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$113K**
$113K/yr · 50K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****83%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, seadoo is a $113K/yr Amazon United States market (50K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 52/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **seadoo market data**
- **Units sold / yr**
- **6K–8K**
- avg 500–750/product
- **Revenue / yr**
- **$138K–$184K**
- units × avg price
- **Conversion rate**
- **9.8%**
- **Avg BSR**
- **#404**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **40%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **163 days**
## **Competition & brand share**
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**44**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**83%**
Top 20: 100%
**Open market**
**0%**
- NGK81% - Hipa11% - Wetenex3% - Push Industries3% - Ciuouient2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +145.8% search growth over the last 90 days.
8K6KHoliday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Aug · busiest ÷ quietest = 6.2×
[**Open Trend **](https://flapen.com/research/us/automotive/seadoo/trend)
## **Top seadoo search terms**
- **seadoo spark accessories**18K/yr+211.9%0.1% conv. - **ngk dcpr8e**10K/yr+134.4%19.9% conv. - **seadoo spark trixx accessories**6K/yr+165.7%0.2% conv. - **dcpr8e spark plug**7K/yr+82.8%17.4% conv. - **ngk dcpr8e spark plug**4K/yr+141.8%23.5% conv. - **dcpr8e**4K/yr+64.6%19.2% conv. [**All search terms **](https://flapen.com/research/us/automotive/seadoo/search-terms)
## **Top seadoo 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%15%$17K30%$34K45%$51K60%$68K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NGK 4339 DCPR8E Compatible With SeaDoo 4-Tec Spark Plug Set All 130 155 185 215 255 260 RXP RXT X GTI GTX Wake GTS GTI 3 Pack**NGK**$16.46**4.8★1,591 rev](https://www.amazon.com/dp/B07P9BT5LB) [2**NGK Spark Plug 4339 DCPR8E (2 Pack)**NGK**$12.18**4.7★262 rev](https://www.amazon.com/dp/B004SKWQZ0) [3**NGK 4339 Standard Spark Plug DCPR8E (4 Pack)**NGK**$20.21**4.8★277 rev](https://www.amazon.com/dp/B00YMXAM2W) [4**Hipa (Pack of 2) DCPR8E Spark Plugs Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner**Hipa**$5.99**5.0★8 rev](https://www.amazon.com/dp/B0FX3WNJWX) [5**(10-Pack) NGK Spark Plugs DCPR8E (Stock # 4339)**NGK**$42.03**4.9★91 rev](https://www.amazon.com/dp/B0722DFQBL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**DCPR8E Spark Plug Fits NGK DCPR8E 4339 SeaDoo 4-Tec GTI GTX GTS Marine Boat Jet 4 PACK**Wetenex**$8.94**2 rev4mo ago](https://www.amazon.com/dp/B0GR8S5KF8) [**Hipa (Pack of 2) DCPR8E Spark Plugs Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner**Hipa**$5.99**8 rev8mo ago](https://www.amazon.com/dp/B0FX3WNJWX) [**Hipa (Pack of 4) DCPR8E Spark Plugs Bujia Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner**Hipa**$8.93**3,486 rev8mo ago](https://www.amazon.com/dp/B0FX3SBG3L) [**Ciuouient Storage Cargo Bin Cover Lid/Storage Lid Adapter(1PCS) Compatible with Sea-Doo Spark 3 Up 2014-2023; Sea-Doo Spark 2 Up 2014-2023-BLACK**Ciuouient**$34.78**10 rev1y ago](https://www.amazon.com/dp/B0DT9SQH1H) [**104.132 Push Industries Boarding Fold-Down Step Compatible with Sea-Doo Spark All Models Trixx Reboarding Watercraft Step Accessories 275 LB Capacity (Replace OEM# 295100494 295100642)**Push Industries**$60.37**70 rev2y ago](https://www.amazon.com/dp/B0D15JMPZM)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**DCPR8E Spark Plug Fits NGK DCPR8E 4339 SeaDoo 4-Tec GTI GTX GTS Marine Boat Jet 4 PACK**Wetenex**$8.94**5.0★**▲ 131%**](https://www.amazon.com/dp/B0GR8S5KF8) [**Hipa (Pack of 4) DCPR8E Spark Plugs Bujia Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner**Hipa**$8.93**4.7★**▲ 84%**](https://www.amazon.com/dp/B0FX3SBG3L) [**Hipa (Pack of 2) DCPR8E Spark Plugs Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner**Hipa**$5.99**5.0★**▲ 63%**](https://www.amazon.com/dp/B0FX3WNJWX) [**NGK 4339 Standard Spark Plug DCPR8E (4 Pack)**NGK**$20.21**4.8★**▲ 18%**](https://www.amazon.com/dp/B00YMXAM2W) [**104.132 Push Industries Boarding Fold-Down Step Compatible with Sea-Doo Spark All Models Trixx Reboarding Watercraft Step Accessories 275 LB Capacity (Replace OEM# 295100494 295100642)**Push Industries**$60.37**4.4★**▲ 12%**](https://www.amazon.com/dp/B0D15JMPZM)
**~~View all trending →~~**
## **What buyers say about seadoo**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**28%
*“Perfect Fit”*
**Advertised Vs Actual Product**24%
*“As advertised”*
**Quality-Overall**17%
*“Excellent product”*
**Value For Money**10%
*“Inexpensive”*
**Product Condition**5%
*“Runs like new”*
**Storage Capacity**5%
*“allowed for Alot more space inside”*
**Socket/Port/Plug**5%
*“Fits both plug socket sizes”*
**Motor Power**5%
*“Exactly replacement for cf moto 600 u force sxs”*
**Assembly/Installation**3%
*“Easy to install”*
### **What buyers complain about **
**Rubber Quality**33%
*“Not the exact same as OEM-No Rubber”*
**Compatibility-Overall**33%
*“Not for Polaris Ranger 900 / 1000”*
**Quality-Overall**33%
*“this thing is super cheap”*
### **Top return reasons **
**Size-Overall**64%
**Compatibility-Overall**11%
**Socket/Port/Plug**5%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**4%
**Value For Money**4%
**Product Condition**2%
**Certifications**1%
**Thin**1%
**Durability**1%
## **Common questions**
- **Is seadoo profitable to sell on Amazon United States?**
- The niche generates $113K/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +145.8%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the seadoo niche?**
- 5 brands and 44 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in seadoo?**
- Top complaints mined from reviews: Rubber Quality, Compatibility-Overall, Quality-Overall. The return rate is 1.5%.
- **When does demand for seadoo peak?**
- Demand peaks in Jun–Jul–Aug; the busiest month runs 6.2× the quietest.
- **What does it cost to enter the seadoo niche?**
- Listings span $5.99–$60.37; the average listing price is $23.06 (sweet spot $15–$100). The average incumbent carries 599 reviews — the moat a new listing must climb.
## **Related niches in Automotive**
- 72 [**brake bleeder kit**](https://flapen.com/research/us/automotive/brake-bleeder-kit)$2.2M/yr+8.2%**Launch it**- 72 [**gas can pump**](https://flapen.com/research/us/automotive/gas-can-pump)$1.7M/yr+20.1%**Launch it**- 72 [**dewalt hedge trimmer**](https://flapen.com/research/us/automotive/dewalt-hedge-trimmer)$1.6M/yr+158.2%**Launch it**- 72 [**iron eraser**](https://flapen.com/research/us/automotive/iron-eraser)$107K/yr>1,000%**Worth a look**- 72 [**marine fuel line**](https://flapen.com/research/us/automotive/marine-fuel-line)$198K/yr+104.3%**Worth a look**- 72 [**garden hose filter**](https://flapen.com/research/us/automotive/garden-hose-filter)$729K/yr+110.7%**Worth a look**[**All Automotive niches **](https://flapen.com/research/us/automotive)