D Lock
MaybeProducts sell for $25.86 on average, inside the sweet spot. But the top 5 brands take 90% of clicks, so D Lock is a Maybe.
- Flapen Score
- 52 / 100Top 41% of 792 Sports & Outdoors niches · +2 vs the category median of 5052
- Market size
- £455K/yr330K searches / yr
- 90-day growth
- +10.3%search demand this quarter
- Competition
- 60%top-5 click share · 9 brands · 39 sellers
Flapen Score
D Lock against its category
The dotted line is the Sports & Outdoors average. Past it, D Lock is stronger. Inside it, weaker.
Market
The D Lock market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for D Lock 330K times last year and spent an estimated £455K. The top 5 brands take 90% of clicks. Demand peaks in Sep. Flapen scores it 52 out of 100, a Maybe.
01 · Demand
An estimated 5.3% of those searches ended in a purchase.
Shoppers searched for this 330K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 5.3% of those searches ended in a purchase. Searches in the last 90 days moved +10.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £455K a year.
- Searches, last 12 months
- 330K
- Growth, 90 days vs prior 90
- +10.3%
- Conversion, latest week
- 5.3%
- Market size, estimated
- £455Ka year
- Peak month
- September1.9× the quietest month
- Top search term
- kryptonite bike lock86K searches a year
02 · Price
A sale here is worth £25.86.
Listings sell for £25.86 on average, from £6.86 to £73.42. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 500 to 750 of them. At £25.86 that is £13K to £19K a year per listing.
- Average price
- £25.86inside the $15 to $100 sweet spot
- Price range
- £6.86–£73.42
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 15K–20K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £13K–£19K
- Returns
- 2.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is ads and reviews.
100% of listings pay for placement with sponsored ads. 95% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #15 within Cycling. It carries 3,403 reviews at 4.47 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 95%
- Out of stock, average day
- 0.0%
- Average rank
- #15in Cycling
- Average rating
- 4.47 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 3,403per listing
- Listings tracked
- 21
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 57 months on average, so the names here are settling in.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 57 months
Products
Top D 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 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Kryptonite Keeper Bike U-Lock Standard with Braided Steel Cable Heavy Duty Anti-Theft Bicycle U Lock 12mm Shackle and 10mm x4ft Length Security Cable with Mounting Bracket and Keys
- Price
- £22.94
- Rating
- 4.4/5
- Reviews
- 5,337
- Age
- 8y ago

Kryptonite Evolution Mini-7 Bike U-Lock with Cable Heavy Duty Anti-Theft Bicycle U Lock 13mm Shackle and 10mm x4ft Length Security Cable with Mounting Bracket and Keys
- Price
- £36.78
- Rating
- 4.5/5
- Reviews
- 14,063
- Age
- 9y ago

Sportneer Bike Lock: 17mm Heavy Duty Bike D Lock with 5Ft/1.2M High Security Steel Cable&Sturdy Mounting Bracket&Key Anti Theft Bicycle Locks for Road Bike Electric Bike Mountain Bike Folding Bike
- Price
- £14.50
- Rating
- 4.5/5
- Reviews
- 2,584
- Age
- 6y ago

Kryptonite Keeper 12 Standard with Bracket Black
- Price
- £15.48
- Rating
- 4.4/5
- Reviews
- 3,177
- Age
- 14y ago

Kryptonite Evolution Standard Bike U-Lock Heavy Duty Anti-Theft Bicycle U Lock 14mm Shackle with Mounting Bracket and Keys High Security Lock for Bicycles Scooters
- Price
- £42.47
- Rating
- 4.4/5
- Reviews
- 4,196
- Age
- 9y ago
Trending
estimated 90-day click momentum
NDakter Bike Locks 18mm Shackle Heavy Duty Bike D Lock with 6FT/1.8M Steel Security Cable with 3 Keys Anti Theft Bicycle Lock for Electric Scooter Motorbike Dirt-Bike E Bike Road Bike Lock Sturdy
- Price
- £21.04
- Rating
- 4.7/5
- Reviews
- 1,286
- Age
- 3y ago

G4GADGET Heavy Duty D Lock for Bike High-Security Bicycle U Lock with 2 Keys Anti-Theft Steel Shackle Weatherproof & Durable Ideal for Road Mountain Electric & Folding Bikes
- Price
- £10.91
- Rating
- 4.7/5
- Reviews
- 4
- Age
- 1y ago

Kryptonite Keeper Bike U-Lock Standard with Braided Steel Cable Heavy Duty Anti-Theft Bicycle U Lock 12mm Shackle and 10mm x4ft Length Security Cable with Mounting Bracket and Keys
- Price
- £22.94
- Rating
- 4.4/5
- Reviews
- 5,337
- Age
- 8y ago

Sportneer Bike Lock 18mm Heavy Duty Bike U Lock Plus Size with Adjustable Mounting Bracket&Key Anti Theft Secure Locks for Bikes (U Lock)
- Price
- £14.29
- Rating
- 4.5/5
- Reviews
- 147
- Age
- 1y ago

Burg Wachter 200D 16mm Heavy Duty D-Lock Padlock Sold Secure Diamond & Gold Rated Bike & Motorcycle Ebike Scooter Security Lock
- Price
- £11.65
- Rating
- 4.4/5
- Reviews
- 100
- Age
- 6mo ago
Newest
by launch date
Burg Wachter 200D 16mm Heavy Duty D-Lock Padlock Sold Secure Diamond & Gold Rated Bike & Motorcycle Ebike Scooter Security Lock
- Price
- £11.65
- Rating
- 4.4/5
- Reviews
- 100
- Age
- 6mo ago

BYKING Bike Lock Heavy Duty Bicycle D Lock with Cable 3 High-Security Keys and 1.2m Steel Cable for Road Electric Folding Mountain Bike and Scooter.
- Price
- £12.55
- Rating
- 4.5/5
- Reviews
- 89
- Age
- 1y ago

G4GADGET Heavy Duty D Lock for Bike High-Security Bicycle U Lock with 2 Keys Anti-Theft Steel Shackle Weatherproof & Durable Ideal for Road Mountain Electric & Folding Bikes
- Price
- £10.91
- Rating
- 4.7/5
- Reviews
- 4
- Age
- 1y ago

Sportneer Bike Lock 18mm Heavy Duty Bike U Lock Plus Size with Adjustable Mounting Bracket&Key Anti Theft Secure Locks for Bikes (U Lock)
- Price
- £14.29
- Rating
- 4.5/5
- Reviews
- 147
- Age
- 1y ago

Sterling 320mm Heavy Duty Bike D Lock
- Price
- £6.86
- Rating
- 4.2/5
- Reviews
- 163
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 60% of clicks. Leaders hold, but buyers still shop past them.
Brands
9 falling
Sellers
39
Est. top-5 brand share
90%
Top 20: 100%
Est. top-5 click share
60%
Top 20: 99%
Open market
7%
- Kryptonite64%
- Sportneer13%
- Burg-Wachter6%
- NDakter4%
- Sterling4%
- Byking3%
- Open — no brand owns it (3 brands, 7%)
Demand
D Lock search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 1.9×
Search terms
Top D Lock search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- kryptonite bike lock86K/yr
- d lock46K/yr
- d locks for bicycles44K/yr
- bike d lock26K/yr
- u lock bike lock12K/yr
- u lock14K/yr
- bike u lock13K/yr
- kryptonite lock14K/yr
- d lock bike10K/yr
- kryptonite9K/yr
Reviews and returns
What reviews say buyers love and hate about D Lock
We read the reviews and the return reasons for every product selling here.
“Broke on the first use”
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 D 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









