kingpin lock
Skip itStrong incumbent ratings (4.7★) — this niche doesn't clear our bar today.
Avg price
Great$61.73avg listing price — sweet spot $15–$100
Returns
Great1.8%return rate — above 5% kills the launch gate
Review moat
Good672.71avg incumbent reviews — the moat a new listing must climb
Conversion
Good6.4%search→purchase rate — share of searches ending in a sale
Market size
Good$282K$282K/yr · 71K searches
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Growth
Okay+12.2%90-day search growth — must beat 0% to launch
Price range
Okay$21.08–$235.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, kingpin lock is a $282K/yr Amazon United States market (71K searches/yr). The top 5 brands hold 77% of demand. Verdict: Skip it — 49/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
kingpin lock market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- $309K–$370K
- units × avg price
- Conversion rate
- 6.4%
- Avg BSR
- #157
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 64 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
20
Top-5 brand share
77%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
16%
- BOYISEN40%
- RVMATE11%
- METOWARE11%
- Trimax8%
- BYERNAUTO7%
- CURT7%
- Open — no brand owns it (5 brands, 16%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top kingpin lock search terms
- king pin lock16K/yr
- 5th wheel lock12K/yr
- kingpin lock11K/yr
- fifth wheel lock8K/yr
- 5th wheel hitch lock8K/yr
- king pin locks for 5th wheel7K/yr
- kingpin lock for semi trailer4K/yr
- fifth wheel hitch lock4K/yr
Top kingpin lock 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 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs Semi Trailers and Campers with Handles Warning Tag
BOYISEN$34.564.8★3,053 rev
RVMATE 5th Wheel Lock Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag for 5th Wheel/Semi Trailers/RVs/Containers
RVMATE$21.474.8★292 rev
METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel RVs Semi Trailers and Campers (Black)
METOWARE$21.904.5★171 rev
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs Container Trailers and Campers with Handles Warning Tag 3 Keys Black
BOYISEN$34.344.8★3,053 rev
Curt 23255 Dumbbell Style King Pin Lock
CURT$43.284.7★1,367 rev
Newest
by launch date
Equipment Lock Heavy Duty 5th Wheel King Pin Lock - Powder Coated Steel 5th Wheel Hitch Lock - Anti-Theft Tow Hitch Lock - Secure Fifth Wheel Lock for Theft Prevention & Security (Keyed Differently)
THE EQUIPMENT LOCK COMPANY$198.369 rev
BYERN AUTO 5th Wheel King Pin Lock Heavy Duty King Pin Lock with Anti-Theft Warning Tag & 2 Keys Fifth Wheel Hitch Lock for RVs Semi Trailers and Campers (Black)
BYERNAUTO$21.1596 rev
BYERN AUTO 5th Wheel King Pin Lock Heavy Duty King Pin Lock with Anti-Theft Warning Tag & 2 Keys Fifth Wheel Hitch Lock for RVs Semi Trailers and Campers (Yellow)
BYERNAUTO$21.0896 rev
METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel RVs Semi Trailers and Campers (Black)
METOWARE$21.90171 rev
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs Container Trailers and Campers with Handles Warning Tag 3 Keys Black
BOYISEN$34.343,053 rev
Trending
90-day click momentumEquipment Lock Heavy Duty 5th Wheel King Pin Lock - Powder Coated Steel 5th Wheel Hitch Lock - Anti-Theft Tow Hitch Lock - Secure Fifth Wheel Lock for Theft Prevention & Security (Keyed Differently)
THE EQUIPMENT LOCK COMPANY$198.364.7★
Trimax - TFW80HD - 5th Wheel King Pin Lock -Heavy Duty Anti-Theft Trailer Lock Hardened Steel Weatherproof Full Collar Design Secure Lock Red
Trimax$86.004.6★
RVMATE 5th Wheel Lock Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag for 5th Wheel/Semi Trailers/RVs/Containers
RVMATE$21.474.8★
METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel RVs Semi Trailers and Campers (Black)
METOWARE$21.904.5★
DC Cargo Mall 5th Wheel King Pin Lock Solid Steel - Weather Resistant Anti-Theft Fifth Wheel Key Lock for RV & Semi Trailers
DC Cargo Mall$24.944.7★
What buyers say about kingpin lock
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent quality”
“Easy to use”
“Works perfectly”
“Locking mechanism works great”
“Works as advertised”
“Fit is good”
“Sturdy and easy to install”
“Yellow color reminds you that it's there”
“Very durable, well made”
“Easy to install”
What buyers complain about
“seems a little light weight”
“Broken part”
“Recieved wrong color”
“One season and the pin that holds the lock into the body fell out making the unit unusable”
“Junk”
“not one of those flimsy deterrents”
“It is not the cheapest lock”
“My issue is with the product listing versus what I received”
Top return reasons
Common questions
- Is kingpin lock profitable to sell on Amazon United States?
- The niche generates $282K/yr across 14 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +12.2%. Flapen's verdict: Skip it (49/100).
- How competitive is the kingpin lock niche?
- 11 brands and 20 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 77% of demand.
- What do buyers complain about in kingpin lock?
- Top complaints mined from reviews: Weight Light, Defective Material/Parts, Color. The return rate is 1.8%.
- When does demand for kingpin lock peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the kingpin lock niche?
- Listings span $21.08–$235.04; the average listing price is $61.73 (sweet spot $15–$100). The average incumbent carries 673 reviews — the moat a new listing must climb.