- Flapen Score
- 43 / 100Ranks 5,360 of 7,287 Automotive niches · −6 vs the category median of 4943
- Market size
- $89K/yr57K searches / yr
- 90-day growth
- +16.0%search demand this quarter
- Competition
- 82%top-5 click share · 7 brands · 37 sellers
Flapen Score
Line Lock against its category
The dotted line is the Automotive average. Past it, Line Lock is stronger. Inside it, weaker.
Market
The Line Lock market on Amazon at a glance
Shoppers on Amazon United States searched for Line Lock 57K times last year and spent an estimated $89K. The top 5 brands take 92% of clicks. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 2.6% of those searches ended in a purchase.
Shoppers searched for this 57K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.6% of those searches ended in a purchase. Searches in the last 90 days moved +16.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $89K a year.
- Searches, last 12 months
- 57K
- Growth, 90 days vs prior 90
- +16.0%
- Conversion, latest week
- 2.6%
- Market size, estimated
- $89Ka year
- Peak month
- May1.2× the quietest month
- Top search term
- line lock kit16K searches a year
02 · Price
A sale here is worth $59.19.
Listings sell for $59.19 on average, from $32.16 to $123.18. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 100 to 250 of them. At $59.19 that is $6K to $15K a year per listing.
- Average price
- $59.19inside the $15 to $100 sweet spot
- Price range
- $32.16–$123.18
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–2K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $6K–$15K
- Returns
- 2.8%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
70% of listings pay for placement with sponsored ads. 90% ship with Prime. On an average day, 15.4% of listings are out of stock. The average listing ranks #594 within Brake Tools. It carries 210 reviews at 4.30 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 70%
- Prime listings
- 90%
- Out of stock, average day
- 15.4%
- Average rank
- #594in Brake Tools
- Average rating
- 4.30 starsAmazon United States average 4.42 stars
- Average reviews
- 210per listing
- Listings tracked
- 10
04 · Newcomers
0 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 67 months on average, so the names here are established.
- Launched, last 12 months
- 2
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 67 months
Products
Top Line Lock products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
PQY Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit Black
- Price
- $35.14
- Rating
- 4.1/5
- Reviews
- 597
- Age
- 7y ago

JEGS Stage Control Kit | Brass | 2-Port Control Valve | Made in USA | Includes Solenoid Valve Micro Switch With Cord 4-Amp Fuse With Holder and Red LED Indicator Lamp
- Price
- $123.09
- Rating
- 4.5/5
- Reviews
- 94
- Age
- 14y ago

Dyno Racing Front Brake Line Lock Kit Stainless Steel Valve Assembly Heavy Duty Type Roll Control Thread Size 1/8NPT Universal Compatible with Brakes Drag Race Hill Holder (Silver)
- Price
- $34.01
- Rating
- 4.1/5
- Reviews
- 8
- Age
- 12mo ago

PQY Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit Red
- Price
- $35.21
- Rating
- 4.1/5
- Reviews
- 597
- Age
- 7y ago

CNSPEED Front Brake Line Lock Kit Roll Control Brake Lock for Brakes/Drag Race/Hill Holder(Red)
- Price
- $37.20
- Rating
- 4.1/5
- Reviews
- 136
- Age
- 5y ago
Trending
estimated 90-day click momentum
Tamirey Universal Front Brake Line Lock Kit Electric Solenoid Launch Control System for Drag Racing or Hill Holder (RED)
- Price
- $32.16
- Rating
- 4.3/5
- Reviews
- 6
- Age
- 11mo ago

Dyno Racing Front Brake Line Lock Kit Stainless Steel Valve Assembly Heavy Duty Type Roll Control Thread Size 1/8NPT Universal Compatible with Brakes Drag Race Hill Holder (Silver)
- Price
- $34.01
- Rating
- 4.1/5
- Reviews
- 8
- Age
- 12mo ago

Universal Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit (Black)
- Price
- $33.04
- Rating
- 4.1/5
- Reviews
- 54
- Age
- 2y ago

PQY Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit Blue
- Price
- $35.04
- Rating
- 4.1/5
- Reviews
- 597
- Age
- 7y ago

PQY Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit Red
- Price
- $35.21
- Rating
- 4.1/5
- Reviews
- 597
- Age
- 7y ago
Newest
by launch date
Tamirey Universal Front Brake Line Lock Kit Electric Solenoid Launch Control System for Drag Racing or Hill Holder (RED)
- Price
- $32.16
- Rating
- 4.3/5
- Reviews
- 6
- Age
- 11mo ago

Dyno Racing Front Brake Line Lock Kit Stainless Steel Valve Assembly Heavy Duty Type Roll Control Thread Size 1/8NPT Universal Compatible with Brakes Drag Race Hill Holder (Silver)
- Price
- $34.01
- Rating
- 4.1/5
- Reviews
- 8
- Age
- 12mo ago

Universal Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit (Black)
- Price
- $33.04
- Rating
- 4.1/5
- Reviews
- 54
- Age
- 2y ago

CNSPEED Front Brake Line Lock Kit Roll Control Brake Lock for Brakes/Drag Race/Hill Holder(Red)
- Price
- $37.20
- Rating
- 4.1/5
- Reviews
- 136
- Age
- 5y ago

PQY Front Brake Line Lock Kit Heavy Duty Type Roll Control Hill Holder Kit Black
- Price
- $35.14
- Rating
- 4.1/5
- Reviews
- 597
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 82% of clicks. A locked shelf that new listings rarely crack.
Brands
7 falling
Sellers
37
Est. top-5 brand share
92%
Top 20: 100%
Est. top-5 click share
82%
Top 20: 100%
Open market
4%
- PQY65%
- JEGS9%
- Allstar Performance7%
- Dyno Racing6%
- CNSPEED5%
- Tamirey4%
- Open — no brand owns it (1 brand, 4%)
Demand
Line Lock search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.2×
Search terms
Top Line Lock search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- line lock kit16K/yr
- line lock20K/yr
- brake line lock7K/yr
- line lock kit for brakes9K/yr
- brake line lock kit5K/yr
Reviews and returns
What reviews say buyers love and hate about Line Lock
We read the reviews and the return reasons for every product selling here.
“Please improve the quality of auto parts especially brake parts”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Line Lock questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









