---
title: "Gx21833 — $162K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/gx21833"
last_updated: "2026-08-11T03:10:40.984Z"
locale: en
meta:
description: "Niche score 63/100 · $162K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 63/100 · $162K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Gx21833 — $162K/yr Amazon US Niche (2026) - Flapen"
---
# **gx21833**
**Worth a look**
Shows demand growing +215.3% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 34Growth 98Conversion 96Competition 21Returns 92Price range 95Avg price 95Brand share 39Review moat 38Quality gap 60
**Growth**
**Incredible****+215.3%**
90-day search growth — must beat 0% to launch
**Conversion**
**Incredible****13.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$24.21**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$16.04–$40.84**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.2%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,651.08**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$162K**
$162K/yr · 50K searches
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, gx21833 is a $162K/yr Amazon United States market (50K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 63/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **gx21833 market data**
- **Units sold / yr**
- **6K–8K**
- avg 500–750/product
- **Revenue / yr**
- **$145K–$194K**
- units × avg price
- **Conversion rate**
- **13.3%**
- **Avg BSR**
- **#197**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **92%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**23**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**13%**
- UDC Mower Belts32% - Tecreddy18% - John Deere14% - Wanotine9% - Holdly8% - Anpongta5% - Open — no brand owns it (5 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +215.3% search growth over the last 90 days.
2K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 11.6×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/gx21833/trend)
## **Top gx21833 search terms**
- **gx21833**14K/yr+293.1%13.3% conv. - **gx21833 john deere mower deck belt**5K/yr+250.2%15.1% conv. - **john deere d140 deck belt**8K/yr+239.1%13.5% conv. - **john deere 48 inch deck belt**7K/yr+170.2%6.3% conv. - **john deere d160 deck belt**3K/yr+337.0%10.3% conv. - **d140 deck belt**3K/yr+270.8%13.7% conv. - **john deere d140 belt**3K/yr+137.3%8.9% conv. - **john deere mower belt 48 inch deck**3K/yr+83.0%9.1% conv. - **john deere gx21833**2K/yr+122.6%12.2% conv. - **gx21833 john deere oem 48 inch mower deck belt**2K/yr-17.0%11.5% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/gx21833/search-terms)
## **Top gx21833 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%10%$16K20%$32K30%$49K40%$65K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**UDC Parts GX21833 Mower Deck Belt Replacement for John Deere 48 Inch D140 L130 L120 LA145 D160 E140 LA130 E170 D155 S170 E160 S140 Z255 GX20571 145 155C D150 E150 LA140 LA155/ Aramid Cord /141.7 inch**UDC Mower Belts**$26.14**4.3★13,180 rev](https://www.amazon.com/dp/B0BZS1R73G) [2**GX21833 48 Inch Mower Deck Belt for John Deere 145 D140 D150 D155 D160 L120 L130 LA130 LA140 LA145 LA155 LA165 Z200 Z255 Z300 Z355E Riding Lawn Mower GX20571 1/2 X 141.7**Tecreddy**$22.92**4.4★1,008 rev](https://www.amazon.com/dp/B0G586R357) [3**Wanotine GX21833 Deck Belt Replaces John Deere 48 inch Mower Deck Belt GX20571 for L120 L130 D140 D150 D155 D160 E140 E150 E160 E170 LA130 LA140 LA145 LA155 LA165 Mowers (1/2 x 141)**Wanotine**$16.04**4.3★158 rev](https://www.amazon.com/dp/B0C85HKBG1) [4**1/2 x 141 Mower Deck Belt GX21833/GX20571 Kevlar Cord Belt for John Deere D140 D150 D160 L120 L130 L145 L155 LA130 LA140 LA145 LA165 S140 S160 S170 S140 Z255 with 48 inch Deck (GX21833)**Holdly**$21.34**4.3★1,611 rev](https://www.amazon.com/dp/B0D2L1BQDQ) [5**John Deere Flat Belt GX21833**John Deere**$40.84**4.7★1,898 rev](https://www.amazon.com/dp/B003JO9N8E)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**GX21833 48 Inch Mower Deck Belt for John Deere 145 D140 D150 D155 D160 L120 L130 LA130 LA140 LA145 LA155 LA165 Z200 Z255 Z300 Z355E Riding Lawn Mower GX20571 1/2 X 141.7**Tecreddy**$22.92**1,008 rev7mo ago](https://www.amazon.com/dp/B0G586R357) [**BlueStars GX21833 Lawn Mower Deck Belt - Fits 48 inch Mower Deck J-Deere L120 L130 D140 D150 D155 D160 E140 E150 E160 E170 LA130 LA140 LA145 LA155 LA165 X140 X165 | Aramid Cord | 1/2 x 141.7**BlueStars**$19.73**1,661 rev1y ago](https://www.amazon.com/dp/B0F9KTXQ8R) [**Anpongta GX21833 Replacement Deck Belt for John Deere 48 inch Mower - D140 D155 D160 E140 E150 E170 S140 S160 S170 - 1/2 x 141 V-Belt Kevlar Cord**Anpongta**$21.09**146 rev2y ago](https://www.amazon.com/dp/B0D5HWNJ56) [**1/2 x 141 Mower Deck Belt GX21833/GX20571 Kevlar Cord Belt for John Deere D140 D150 D160 L120 L130 L145 L155 LA130 LA140 LA145 LA165 S140 S160 S170 S140 Z255 with 48 inch Deck (GX21833)**Holdly**$21.34**1,611 rev2y ago](https://www.amazon.com/dp/B0D2L1BQDQ) [**Lawn Mower Drive Belt Compatible with John Deere GX21833 GX20571 48 inch Deck Drive Belt Compatible with L120 L130 LA130 LA140 X140 X165 D140 D150 E140 E150 145 155C**RGQSUN**$19.15**885 rev2y ago](https://www.amazon.com/dp/B0CPM1H72F)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BlueStars GX21833 Lawn Mower Deck Belt - Fits 48 inch Mower Deck J-Deere L120 L130 D140 D150 D155 D160 E140 E150 E160 E170 LA130 LA140 LA145 LA155 LA165 X140 X165 | Aramid Cord | 1/2 x 141.7**BlueStars**$19.73**4.4★**▲ 71%**](https://www.amazon.com/dp/B0F9KTXQ8R) [**GX21833 48 Inch Mower Deck Belt for John Deere 145 D140 D150 D155 D160 L120 L130 LA130 LA140 LA145 LA155 LA165 Z200 Z255 Z300 Z355E Riding Lawn Mower GX20571 1/2 X 141.7**Tecreddy**$22.92**4.4★**▲ 60%**](https://www.amazon.com/dp/B0G586R357) [**Anpongta GX21833 Replacement Deck Belt for John Deere 48 inch Mower - D140 D155 D160 E140 E150 E170 S140 S160 S170 - 1/2 x 141 V-Belt Kevlar Cord**Anpongta**$21.09**4.4★**▲ 47%**](https://www.amazon.com/dp/B0D5HWNJ56) [**Wanotine GX21833 Deck Belt Replaces John Deere 48 inch Mower Deck Belt GX20571 for L120 L130 D140 D150 D155 D160 E140 E150 E160 E170 LA130 LA140 LA145 LA155 LA165 Mowers (1/2 x 141)**Wanotine**$16.04**4.3★**▲ 21%**](https://www.amazon.com/dp/B0C85HKBG1) [**Honoyam GX21833 Lawn Mower Deck Belt 141 1/8 x 1/2 Replacement 48 for John D-eere GX21833 GX20571 Fits D140 D150 D160 L120 L130 L145 L155 LA130 LA140 LA165 X140 X165**Honoyam**$16.67**4.5★**— 3%**](https://www.amazon.com/dp/B0BZGSHJCP)
**~~View all trending →~~**
## **What buyers say about gx21833**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**44%
*“the belt is the correct length”*
**Quality-Overall**19%
*“Good quality”*
**Value For Money**8%
*“Good value”*
**Durability**7%
*“Excellent durability”*
**Advertised Vs Actual Product**7%
*“As expected”*
**Assembly/Installation**2%
*“Installation was straightforward”*
**Design-Overall**1%
*“As designed”*
**Cutting/Trimming**1%
*“I cut heavy grass for an hour with no problems”*
**Material Quality**1%
*“This mower deck belt is made from quality materials”*
**Weight Heavy**1%
*“Good heavy duty belt”*
### **What buyers complain about **
**Durability**52%
*“Already coming apart”*
**Quality-Overall**16%
*“Not happy with product performance”*
**Size-Overall**11%
*“Does not fit”*
**Advertised Vs Actual Product**1%
*“Does not fit as advertised”*
**Weight Heavy**1%
*“Not as heavy as original”*
**Cutting/Trimming**1%
*“Cut grass with it two times”*
**Instructions/User Manual/Troubleshooting**1%
*“There are no installation instructions included”*
**Value For Money**1%
*“costs a more”*
**Material Quality**1%
*“It looks like the fabric again became warn”*
**Defective Material/Parts**1%
*“Not sure if I just received a bad belt or if it is just not a good belt or manufacture defect”*
### **Top return reasons **
**Size-Overall**60%
**Durability**20%
**Defective Material/Parts**3%
**Advertised Vs Actual Product**3%
**Functionality-Overall**2%
**Product Condition**2%
**Quality-Overall**1%
**Value For Money**1%
**Material Quality**1%
**Maintenance And Repair**1%
## **Common questions**
- **Is gx21833 profitable to sell on Amazon United States?**
- The niche generates $162K/yr across 12 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +215.3%. Flapen's verdict: Worth a look (63/100).
- **How competitive is the gx21833 niche?**
- 11 brands and 23 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in gx21833?**
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 1.2%.
- **When does demand for gx21833 peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 11.6× the quietest.
- **What does it cost to enter the gx21833 niche?**
- Listings span $16.04–$40.84; the average listing price is $24.21 (sweet spot $15–$100). The average incumbent carries 2,651 reviews — the moat a new listing must climb.
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