5/8 axle shaft
Skip itA small market ($36K/yr) — this niche doesn't clear our bar today.
Avg price
Great$18.01avg listing price — sweet spot $15–$100
Review moat
Great407.44avg incumbent reviews — the moat a new listing must climb
Price range
Good$7.14–$32.22cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.5%return rate — above 5% kills the launch gate
Growth
Good+35.1%90-day search growth — must beat 0% to launch
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Okay65%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$36K$36K/yr · 56K searches
According to Flapen's Amazon United States niche tracking, 5/8 axle shaft is a $36K/yr Amazon United States market (56K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Apr–May. Verdict: Skip it — 44/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
5/8 axle shaft market data
- Units sold / yr
- 2K–3K
- avg 100–250/product
- Revenue / yr
- $36K–$45K
- units × avg price
- Conversion rate
- 3.5%
- Avg BSR
- #255
- Page quality
- 0%
- Prime
- 78%
- Sponsored
- 61%
- Out of stock
- 4.8%
- Avg brand age
- 53 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
32
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
65%
Top 20: 100%
Open market
14%
- AR-PRO42%
- CE Smith17%
- Generic14%
- Luyostik5%
- MOKOVI4%
- Agri-Fab3%
- Open — no brand owns it (7 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +35.1% search growth over the last 90 days.Peak months: Apr, May · busiest ÷ quietest = 1.9×
Top 5/8 axle shaft search terms
- 5/8 axle12K/yr
- 5/8 axle shaft14K/yr
- 5/8 steel rod9K/yr
- wheelbarrow axle6K/yr
- 5/8 rod7K/yr
- 5/8 shaft6K/yr
- 5/8 axle rod3K/yr
Top 5/8 axle shaft 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
AR-PRO (2-Pack) 5/8 x 36 Zinc Plated Steel Rods Designed for Use as an Axle Shaft on Hand Trucks Dollies Wagons 4005BC Wheelbarrows
AR-PRO$32.224.4★480 rev
CE Smith - Roller Shaft - Sturdy Zinc Boat Accessories - 5/8 x 11 (10726A)
CE Smith$18.434.6★1,062 rev
5/8 Diameter 1018 Steel Round Bar Rod - Pick Your Length (48 INCH)
Generic$21.754.8★53 rev
Luyostik 4pcs 5/8 bore Shaft Collar 5/8 bore Solid Steel Style zinc Plated Set Screw Shaft Collars 1-1/8 OD 1/2 Width for Wheel Barrow Axle Gearbox Assemblies Machine Tools Industry
Luyostik$7.594.7★79 rev
(4-Pack) 5/8 Bore Solid Steel Shaft Collars with Zinc Plated Coating - Durable Shaft Collars Suitable for Machinery and Industrial Use
AR-PRO$7.144.7★1,045 rev
Newest
by launch dateLuyostik 4pcs 5/8 bore Shaft Collar 5/8 bore Solid Steel Style zinc Plated Set Screw Shaft Collars 1-1/8 OD 1/2 Width for Wheel Barrow Axle Gearbox Assemblies Machine Tools Industry
Luyostik$7.5979 rev
SEASAIL 5/8 Hole Wheelbarrow Axle Bracket Set Heavy-Duty Wheelbarrows Spare Parts 10 inch Fit for Wheelbarrows axles and 3.3 x 2.1 inch Brackets
SEASAIL$12.148 rev
1 Set Wheelbarrow Axle Bracket Set Compatible with 5/8 Hole Wheelbarrow Axles Including Heavy-Duty Wheelbarrows Spare Parts 10 inch Wheelbarrows axles and 3.3 x 2.1 inch Brackets
C CLINK$14.3433 rev
FOROIRON Heavy Duty Wheelbarrow Axle Bracket Set Compatible with 5/8 Wheelbarrow Axles Wheelbarrow Axle Shaft and Bracket Wheelbarrows Spare Part Include Bolt and Nut
FOROIRON$13.4189 rev
16 inches Long 5/8(16mm) Diameter 304 Stainless Steel Solid Round Rod forMetal Solid Shaft Rodsfor DIY Craft & Metal Working - 1pcs
MOKOVI$19.73220 rev
Trending
90-day click momentumCE Smith - Roller Shaft - Sturdy Zinc Boat Accessories - 5/8 x 11 (10726A)
CE Smith$18.434.6★
SACKORANGE 2 Pack UCP202-10 Pillow Block Bearing - 5/8 Mounted Pillow Block Bearings Solid Cast Iron Base - Self Alignment
SACKORANGE$15.054.5★
5/8 x 36 Yellow Zinc Plated Smooth Steel Round Rod (2-Pack) Iridescent Color Zinc Heavy Duty Axle Shaft for Hand Trucks Dollies Wagons Wheelbarrows Superior Corrosion Resistant Finish
HJGuamou$31.505.0★
Steel Cold Rolled Round Bar 5/8 Dia. x 36
FOXCUP$24.824.8★
5/8 Diameter 1018 Steel Round Bar Rod - Pick Your Length (24 INCH)
Generic$13.234.8★
What buyers say about 5/8 axle shaft
What buyers praise and complain about, mined from review topics.What buyers love
“just as advertised”
“Good quality”
“Fit perfectly”
“Worth IT”
“Its easy to install, fits good”
“Easy to use”
“Solid make”
“Good value for repairing”
“Look very durable”
“Worked better than I expected”
What buyers complain about
“Wrong size specified”
“It seems that every time I went to use my generator/Inverter the tires were flat”
“Useless tore up as soon as I put it on”
“One of the four was missing Allen bolt”
“Parts dont fit”
“But no it came pre-drilled”
Top return reasons
Common questions
- Is 5/8 axle shaft profitable to sell on Amazon United States?
- The niche generates $36K/yr across 18 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +35.1%. Flapen's verdict: Skip it (44/100).
- How competitive is the 5/8 axle shaft niche?
- 13 brands and 32 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in 5/8 axle shaft?
- Top complaints mined from reviews: Size-Overall, Flatness, Durability. The return rate is 2.5%.
- When does demand for 5/8 axle shaft peak?
- Demand peaks in Apr–May; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 5/8 axle shaft niche?
- Listings span $7.14–$32.22; the average listing price is $18.01 (sweet spot $15–$100). The average incumbent carries 407 reviews — the moat a new listing must climb.