kobalt parts
Worth a lookShows demand growing +225.3% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+225.3%90-day search growth — must beat 0% to launch
Quality gap
Incredible3.8★avg incumbent rating — lower means beatable quality
Review moat
Great109.34avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$23.40avg listing price — sweet spot $15–$100
Price range
Incredible$17.72–$35.37cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good60%top-5 brand share — brands hold most of the demand
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Conversion
Good4.0%search→purchase rate — share of searches ending in a sale
Returns
Okay4.8%return rate — above 5% kills the launch gate
Market size
Bad$64K$64K/yr · 68K searches
According to Flapen's Amazon United States niche tracking, kobalt parts is a $64K/yr Amazon United States market (68K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in Apr–May–Jun–Jul–Aug–Sep. Verdict: Worth a look — 66/100.
Data updated Jul 16, 2026 · scored weekly · How we score niches
kobalt parts market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $59K–$70K
- units × avg price
- Conversion rate
- 4.0%
- Avg BSR
- #2,306
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 5.9%
- Avg brand age
- 24 months
- Avg seller age
- 146 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
23 rising
Sellers
43
Top-5 brand share
60%
Top 20: 98%
Top-5 click share
47%
Top 20: 89%
Open market
35%
- Eyoloty18%
- THTEN15%
- DZDY12%
- Kaberalty9%
- JOBGV6%
- Cilivo5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +225.3% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul, Aug, Sep · busiest ÷ quietest = 17.7×
Top kobalt parts search terms
- kobalt weed eater head replacement21K/yr
- kobalt trimmer head replacement14K/yr
- kobalt 24v trimmer head9K/yr
- kobalt replacement trimmer head4K/yr
- kobalt trimmer head8K/yr
- kobalt string trimmer replacement head3K/yr
- kobalt weed eater head3K/yr
- kobalt 24v trimmer parts3K/yr
- kobalt trimmer replacement head3K/yr
Top kobalt parts 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Thten KST 2224B-03 KLS 124-03 Trimmer Head Compatible with Kobalt 24 Volt KST 1124B-03 KST 2024A-03 KST 4024A-03 KST 4024AB-03 12 inch Straight Shaft String Trimmer with 0.080-in Dual String line
THTEN$26.574.2★126 rev
DZDY KLS124-03 String Trimmer Head Compatible with Kobalt 24V KST 2224B-03 KST1124B-03 KST 2024A-03 KST 4024A-03 KST 4024AB-03 Replacement (Trimmer Head 1Pcs)
DZDY$18.593.8★48 rev
Kaberalty KTHA1040-03 KST2580-06 4665020 Replacement Trimmer Head Compatible with Kobalt KST224A-03 KST224B-03 KST1040A-03 KMS1040A-03 KST2540-06 KST1540-06 with 0.080 precut line
Kaberalty$24.833.4★19 rev
KTHA 1040-03 Weed Eater Head Replacement Compatible with Kobalt 80V KST 1680-06 40V KST 2540-06 KST 1040A-03 24V KST 224A-03 KST 224B-03 Cordless String Trimmer with 0.080 17 Ft Pre-Cut Dual Line
Eyoloty$24.323.1★37 rev
Eyoloty KST 120X KST 120X-06 Replacement Trimmer Head Compatible with Kobalt 40-Volt Max KST 2040-06 KDLA 3040-03 Weed Eater with 14 Pack Quickload Blades & 8 Pack 0.12 Flexible Line Parts (30 Pack)
Eyoloty$25.832.5★57 rev
Newest
by launch date
HSKLAADC KLS 124-03 Trimmer Head Replacement for Kobalt 24-Volt max KST 2224B-03 KST 2024A-03 KST 4024A-03 KST 1124B-03 String Trimmer Weed Wack Pre-Wound Dual 0.080 Dual String line
HSKLAADC$20.092 rev
Kaberalty KTHA1040-03 KST2580-06 4665020 Replacement Trimmer Head Compatible with Kobalt KST224A-03 KST224B-03 KST1040A-03 KMS1040A-03 KST2540-06 KST1540-06 with 0.080 precut line
Kaberalty$24.8319 rev
KTHA 1040-03 Weed Eater Head Replacement Compatible with Kobalt 80V KST 1680-06 40V KST 2540-06 KST 1040A-03 24V KST 224A-03 KST 224B-03 Cordless String Trimmer with 0.080 17 Ft Pre-Cut Dual Line
Eyoloty$24.3237 rev
Eyoloty KST 140XB Weed Eater Head Replacement Compatible with Kobalt 80V 140XB 2908003 1315033 1315053 2908503 623439 670250 Straight Brushless Cordless String Trimmer Replacement Head for Kobalt
Eyoloty$24.2617 rev
3 Pack KLS124-03 Replacement Trimmer Head Fit for Kobalt 24V String Trimmer Compatible with KST 1124B-03 KST 2024A-03 KST 2224B-03 KST 4024A-03 KST 4024AB-03 Pre-Wound with 0.080 16ft Dual Line
Direvcdro$34.345 rev
Trending
90-day click momentum
KOIUETUA 3 Pack KLS 124-03 Trimmer Head Replacement for Kobalt 24V Weed Wacker Compatible with KST 1124B-03 KST 2024A-03 KST 2224B-03 KST 4024A-03 KST 4024AB-03 Pre-Wound 0.080 Dual Line
KOIUETUA$35.373.7★
KTHA 1040-03 Weed Eater Head Replacement Compatible with Kobalt 80V KST 1680-06 40V KST 2540-06 KST 1040A-03 24V KST 224A-03 KST 224B-03 Cordless String Trimmer with 0.080 17 Ft Pre-Cut Dual Line
Eyoloty$24.323.1★
Kaberalty KTHA1040-03 KST2580-06 4665020 Replacement Trimmer Head Compatible with Kobalt KST224A-03 KST224B-03 KST1040A-03 KMS1040A-03 KST2540-06 KST1540-06 with 0.080 precut line
Kaberalty$24.833.4★
KLS 124-03 Weed Eater Head Replacement - Cover Cap & Spring Fits Kobalt 24V
PEHUAP$17.815.0★
3 Pack KLS124-03 Replacement Trimmer Head Fit for Kobalt 24V String Trimmer Compatible with KST 1124B-03 KST 2024A-03 KST 2224B-03 KST 4024A-03 KST 4024AB-03 Pre-Wound with 0.080 16ft Dual Line
Direvcdro$34.344.0★
What buyers say about kobalt parts
What buyers praise and complain about, mined from review topics.What buyers love
“Direct fit”
“ez to install”
“The quality feels reliable”
“Good price”
“Good trimmer head”
“Ease of operation”
“As advertised”
“Works really well very durable”
“good quality materials”
“Everything functioned properly with no issues during use”
What buyers complain about
“Doesn't fit”
“Falls apart right away”
“Difficult to operate”
“Because I can't even squeeze the tabs in to attempt to install”
“Doesnt fit what it says it does”
“Absolutely terrible product”
“Did not work well”
“However, I quickly encountered a significant issue”
“not as good as bargain as you might think”
“I hate string trimmers”
Top return reasons
Common questions
- Is kobalt parts profitable to sell on Amazon United States?
- The niche generates $64K/yr across 32 tracked products. 4 of 20 products launched in the last 360 days are still selling. 90-day search growth is +225.3%. Flapen's verdict: Worth a look (66/100).
- How competitive is the kobalt parts niche?
- 23 brands and 43 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 60% of demand.
- What do buyers complain about in kobalt parts?
- Top complaints mined from reviews: Size-Overall, Durability, Ease Of Use. The return rate is 4.8%.
- When does demand for kobalt parts peak?
- Demand peaks in Apr–May–Jun–Jul–Aug–Sep; the busiest month runs 17.7× the quietest.
- What does it cost to enter the kobalt parts niche?
- Listings span $17.72–$35.37; the average listing price is $23.40 (sweet spot $15–$100). The average incumbent carries 109 reviews — the moat a new listing must climb.