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20x2.125 Bicycle Tube

Fail

Prices span $7.02–$14.99, mostly outside the sweet spot, so 20x2.125 Bicycle Tube is a Fail.

Flapen Score
48
48 / 100
Top 46% of 8,101 Sports & Outdoors niches · +1 vs the category median of 47
Market size
$103K/yr40K searches / yr
90-day growth
+56.1%search demand this quarter
Competition
73%top-5 click share · 10 brands · 29 sellers

Flapen Score

20x2.125 Bicycle Tube against its category

The dotted line is the Sports & Outdoors average. Past it, 20x2.125 Bicycle Tube is stronger. Inside it, weaker.

48Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 20x2.125 Bicycle Tube market on Amazon at a glance

Shoppers on Amazon United States searched for 20x2.125 Bicycle Tube 40K times last year and spent an estimated $103K. The top 5 brands take 86% of clicks. Demand peaks in Apr–May–Jun–Jul–Aug. Flapen scores it 48 out of 100, a Fail.

01 · Demand

An estimated 24.2% of those searches ended in a purchase.

Shoppers searched for this 40K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 24.2% of those searches ended in a purchase. Searches in the last 90 days moved +56.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $103K a year.

Searches, last 12 months
40K
Growth, 90 days vs prior 90
+56.1%
Conversion, latest week
24.2%
Market size, estimated
$103Ka year
Peak month
July2.8× the quietest month
Top search term
20x2.125 bike tube17K searches a year

02 · Price

A sale here is worth $10.75.

Listings sell for $10.75 on average, from $7.02 to $14.99. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 750 to 1,000 of them. At $10.75 that is $8K to $11K a year per listing.

Average price
$10.75under the $15 to $100 sweet spot
Price range
$7.02–$14.99
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
8K–10K
Units per listing a year
750–1,000
Revenue per listing a year
$8K–$11K
Returns
1.1%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

79% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #54 within Tires & Tubes. It carries 11,289 reviews at 4.50 stars, so a new listing needs social proof before a better product.

Sponsored listings
79%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#54in Tires & Tubes
Average rating
4.50 starsAmazon United States average 4.42 stars
Average reviews
11,289per listing
Listings tracked
14

04 · Newcomers

2 of last year's 2 launches cleared the first-year sales bar.

2 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 55 months on average, so the names here are settling in.

Launched, last 12 months
2
Successful launches
2Amazon's first-year sales bar
Average brand age
55 months

Products

Top 20x2.125 Bicycle Tube 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 25, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.

$0$10K$21K$31K$41K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

10 rising

Sellers

29

Est. top-5 brand share

86%

Top 20: 100%

Est. top-5 click share

73%

Top 20: 100%

Open market

9%

  • BELL29%
  • YunSCM27%
  • Slime15%
  • Hydencamm11%
  • DBXIIART5%
  • Ultraverse4%
  • Open — no brand owns it (4 brands, 9%)

Demand

20x2.125 Bicycle Tube search demand

Weekly searches over the year, seasonality beneath. Pick a range.

1K600Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Apr, May, Jun, Jul, Aug · busiest ÷ quietest = 2.8×

Search terms

Top 20x2.125 Bicycle Tube search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • 20x2.125 bike tube17K/yr
  • 20x1.75 bike tube11K/yr
  • 20 x 1.75 bike tube5K/yr
  • 20x1.75/2.125 bike tube4K/yr
  • bike tube 20 x 2.1253K/yr

Reviews and returns

What reviews say buyers love and hate about 20x2.125 Bicycle Tube

We read the reviews and the return reasons for every product selling here.

30%of positive reviews mention “Quality-Overall”
21%of negative reviews mention “Quality-Overall”
1.1%of orders come back
“Save your money for quality”
A buyer, on “Quality-Overall”21% of negative reviews mention the same topic

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.

19 topics

NegativePositive

FAQ

Common 20x2.125 Bicycle Tube 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