---
title: "918-06978 — $98K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/918-06978"
last_updated: "2026-08-09T04:34:11.884Z"
locale: en
meta:
description: "Niche score 63/100 · $98K/yr market · 20K searches/yr. 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 · $98K/yr market · 20K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "918-06978 — $98K/yr Amazon US Niche (2026) - Flapen"
---
# **918-06978**
**Worth a look**
Shows demand growing +303.8% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 25Growth 100Conversion 71Competition 55Returns 75Price range 43Avg price 84Brand share 62Review moat 96Quality gap 37
**Growth**
**Incredible****+303.8%**
90-day search growth — must beat 0% to launch
**Review moat**
**Incredible****77.61**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$76.48**
avg listing price — sweet spot $15–$100
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****6.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Okay****$26.90–$196.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$98K**
$98K/yr · 20K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 918-06978 is a $98K/yr Amazon United States market (20K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 63/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **918-06978 market data**
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$76K–$96K**
- units × avg price
- **Conversion rate**
- **6.6%**
- **Avg BSR**
- **#1,116**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **211 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **—flat
**Sellers**
**21**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 88%
**Open market**
**26%**
- JSXDNWYJ26% - JYLEYJ12% - PetMigo11% - TENGMUJX10% - whldyno9% - ATRACYPART6%
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — +303.8% search growth over the last 90 days.
700500Spike '25Spike '26Prime Day '26 seasonSepMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 20.5×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/918-06978/trend)
## **Top 918-06978 search terms**
- **cub cadet zt1 54 spindle kit**10K/yr+353.3%5.4% conv. - **cub cadet spindle assembly 54 inch deck**3K/yr+484.6%4.1% conv. - **cub cadet zt1 54 spindle**4K/yr+249.0%8.6% conv. - **cub cadet 54 inch deck spindles**3K/yr+126.5%4.6% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/918-06978/search-terms)
## **Top 918-06978 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%$5K10%$10K15%$15K20%$20K1101001K 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**JSXDNWYJ 918-06978 618-06978 Spindle Assembly for 54 Inch Mower Decks Cub Cadet RZT-S54 L54 ZT1-54 ZT2-54 XT1-ST54 GT54 XT2-54 GX54 Troy Bilt TB2454 Craftsman T8400 G8400 Z6660 (3-Pack)**JSXDNWYJ**$66.23**4.7★69 rev](https://www.amazon.com/dp/B0CT5RCMW5) [2**whldyno 618-09236 618P09236 Spindle Assembly for Cub Cadet XT1-GT54 ST54 ZT1-54 ZT2-54 ZTS2-54 Craftsman Z5800 Troy Bilt Mustang 54XP MTD 54 Mower Deck Spindle with Mounting Bolts and Threads**whldyno**$38.45**5.0★13 rev](https://www.amazon.com/dp/B0FL7C793H) [3**JSXDNWYJ 918-06978 618-06978 Spindle Assembly for 54 Inch Mower Decks Cub Cadet RZT-S54 L54 ZT1-54 ZT2-54 XT1-ST54 GT54 XT2-54 GX54 Troy Bilt TB2454 Craftsman T8400 G8400 Z6660 (1-Pack)**JSXDNWYJ**$28.58**4.6★111 rev](https://www.amazon.com/dp/B09R1CYN1M) [4**RZT-S54 Spindle Assembly 54 Deck 618-06978 918-06978 Fits for MTD Cub Cadet Troy Bilt XT1-ST54 XT1-GT54 ZT1-54 ST54 ZT2-54 TB2454 Craftsman T8400 G8400 Z66603 Pack**PetMigo**$65.04**4.7★365 rev](https://www.amazon.com/dp/B09NVL5277) [5**618P09236 Mower Deck Spindle Compatible with Cub Cadet XT1-GT54 XT1-ST54 ZT1-54 ZT2-54 ZTS2-54; Craftsman Z5800 T3200; Troy Bilt Mustang 54XP Mustang Z54 54 Decks Spindle Replaces# 618-09236**ATRACYPART**$41.56**4.8★38 rev](https://www.amazon.com/dp/B0DM22ZQQ2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**POSEAGLE 918-06978 54 Deck Rebuild Kit for Cub Cadet ZT1 54 RZT L54 ZT2 54**POSEAGLE**$149.41**2 rev6mo ago](https://www.amazon.com/dp/B0GH42TPJQ) [**AEFHKM 618P09236 Spindle Assembly Fits for 54 Inch Decks Cub Cadet ZT1-54 ZT2-54 XT1-ST54 XT1-GT54 ZTS2-54 Craftsman T3200 Z5800 Z7600 Troy Bilt Mustang Z54 54XP Lawn Mower Replaces 618-09236**AEFHKM**$36.55**12 rev6mo ago](https://www.amazon.com/dp/B0GFH84N5V) [**54 Mower Deck Spindle Rebuild Kit Compatible with Cub Cadet ZT1-54 ZT2-54 Troy-Bilt Mustang Z54 Craftsman Z560 54-Inch Deck Includes 3 Spindles 918-06978 Blades Idlers Wheels & Belt**ATRACYPART**$176.61**5 rev7mo ago](https://www.amazon.com/dp/B0FN3L8CGF) [**54 inch Deck Lawn Mower Spindle Kit Parts for MTD Cub Cadet ZT1 ZT2 Troy Bilt Mustang 54XP Z54 Craftsman Z7600 Z5800 Include 3 spindle 618-09236 3 Blade 742P05086 2 Idler GY22082 1 Belt 754-04329**JXJKCZ**$196.91**2 rev7mo ago](https://www.amazon.com/dp/B0G43R519C) [**PetMigo 54 Decks Mower Deck 618-09236 Spindle Replaces 618P09236 Compatible with Cub Cadet XT1-GT54 XT1-ST54 ZT1-54 ZT2-54 ZTS2-54 for Craftsman Z5800 T3200 for Troy Bilt Mustang 54XP**PetMigo**$36.10**6 rev7mo ago](https://www.amazon.com/dp/B0G2XJZMXR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**54 inch Deck Lawn Mower Spindle Kit Parts for MTD Cub Cadet ZT1 ZT2 Troy Bilt Mustang 54XP Z54 Craftsman Z7600 Z5800 Include 3 spindle 618-09236 3 Blade 742P05086 2 Idler GY22082 1 Belt 754-04329**JXJKCZ**$196.91**5.0★**▲ 106%**](https://www.amazon.com/dp/B0G43R519C) [**PetMigo 54 Decks Mower Deck 618-09236 Spindle Replaces 618P09236 Compatible with Cub Cadet XT1-GT54 XT1-ST54 ZT1-54 ZT2-54 ZTS2-54 for Craftsman Z5800 T3200 for Troy Bilt Mustang 54XP**PetMigo**$36.10**5.0★**▲ 106%**](https://www.amazon.com/dp/B0G2XJZMXR) [**POSEAGLE 918-06978 54 Deck Rebuild Kit for Cub Cadet ZT1 54 RZT L54 ZT2 54**POSEAGLE**$149.41**5.0★**▲ 106%**](https://www.amazon.com/dp/B0GH42TPJQ) [**54 Deck 918-06978 Spindle Rebuild Kit for Cub Cadet ZT1 54 RZT 54 RZT L54 RZT S54 3 Spindles for 618-06978 with Pulley for Craftsman Z6600 Z6900 3 Blades for 742-05056 942-05056 1 148 1/4 Belt**Magorfas**$92.35**4.2★**▲ 106%**](https://www.amazon.com/dp/B0CLRNHBBN) [**Youxmoto 618-06978 Spindle Rebuild Kit for 54 Deck MTD Cub Cadet RZT L54 RZT-S54 ZT1-54 ZT2-54 XT2-54 Z6600 3 Spindles 918-06978 3 Blade 942-05056 148 Belt 954-04329**Youxmoto**$92.71**4.5★**▲ 101%**](https://www.amazon.com/dp/B0CNVN41ZM)
**~~View all trending →~~**
## **What buyers say about 918-06978**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**38%
*“Fit good”*
**Value For Money**17%
*“Great Value”*
**Advertised Vs Actual Product**14%
*“Exactly what the description is”*
**Quality-Overall**12%
*“looks well made”*
**Assembly/Installation**8%
*“Easy install”*
**Cutting/Trimming**3%
*“After installing these spindles on my ZT1-54 Cub Cadet it cuts as good or better than new”*
**Mounting**2%
*“A huge bonus was that it came with brand-new mounting bolts, saving me a trip to the hardware store and making the installation process smooth and straightforward”*
**Ease Of Use**2%
*“Super easy change out from old to new”*
**Maintenance And Repair**1%
*“Was a quick easy fix”*
**Durability**1%
*“Blade lasted a good while”*
### **What buyers complain about **
**Size-Overall**27%
*“Belt didnt fit”*
**Durability**23%
*“Broke after the 1st use trying to return”*
**Quality-Overall**12%
*“Poor manufacturing”*
**Functionality-Overall**12%
*“didnt work”*
**Assembly/Installation**4%
*“When a second assembly had issues this week”*
**Mounting**4%
*“unfortunately it is shown with bolts for mounting and a nut for the blade, neither included”*
**Advertised Vs Actual Product**4%
*“Not same dimension as oem”*
**Ease Of Use**3%
*“difficult. I'm pushing 70 now”*
### **Top return reasons **
**Size-Overall**47%
**Advertised Vs Actual Product**17%
**Assembly/Installation**11%
**Defective Material/Parts**10%
**Mounting**6%
**Shape/Style**2%
**Functionality-Overall**2%
**Maintenance And Repair**1%
**Product Condition**1%
**Add-Ons/Attachments**1%
## **Common questions**
- **Is 918-06978 profitable to sell on Amazon United States?**
- The niche generates $98K/yr across 31 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is +303.8%. Flapen's verdict: Worth a look (63/100).
- **How competitive is the 918-06978 niche?**
- 18 brands and 21 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in 918-06978?**
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 2.0%.
- **When does demand for 918-06978 peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 20.5× the quietest.
- **What does it cost to enter the 918-06978 niche?**
- Listings span $26.90–$196.91; the average listing price is $76.48 (sweet spot $15–$100). The average incumbent carries 78 reviews — the moat a new listing must climb.
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