---
title: "700x38c Bike Tube — $401K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/700x38c-bike-tube"
last_updated: "2026-08-06T22:36:12.752Z"
locale: en
meta:
description: "Niche score 56/100 · $401K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $401K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "700x38c Bike Tube — $401K/yr Amazon US Niche (2026) - Flapen"
---
# **700x38c bike tube**
**Worth a look**
Shows searches that convert (13.7% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 55Growth 59Conversion 96Competition 29Returns 69Price range 47Avg price 77Brand share 29Review moat 63Quality gap 55
**Conversion**
**Incredible****13.7%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.82**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.2%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****974.06**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+34.3%**
90-day search growth — must beat 0% to launch
**Market size**
**Good****$401K**
$401K/yr · 185K searches
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$8.67–$20.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
According to Flapen's Amazon United States niche tracking, 700x38c bike tube is a $401K/yr Amazon United States market (185K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 56/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **700x38c bike tube market data**
- **Units sold / yr**
- **20K–25K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$316K–$396K**
- units × avg price
- **Conversion rate**
- **13.7%**
- **Avg BSR**
- **#121**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**27**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**7%**
- YunSCM32% - DBXIIART28% - FANSPRO11% - BELL10% - Continental6% - Goodyear5% - Open — no brand owns it (2 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +34.3% search growth over the last 90 days.
10K6KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 4.2×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/700x38c-bike-tube/trend)
## **Top 700x38c bike tube search terms**
- **700x35c bike tube**34K/yr+46.1%10.0% conv. - **700x38c inner tube**18K/yr+248.9%9.6% conv. - **700x40c bike tube**20K/yr+45.5%9.4% conv. - **700x38c bike tube**31K/yr-31.4%8.6% conv. - **40-622 700x38c bike tube**10K/yr+24.9%8.2% conv. - **700 x 38c bike tube**10K/yr+16.4%9.3% conv. - **700 x 35c bike tube**8K/yr+16.3%10.3% conv. - **bike tube 700x35c**7K/yr+27.2%8.6% conv. - **bike tube 700x38c**7K/yr+28.9%9.7% conv. - **700x35/43c inner tube**5K/yr+183.2%14.8% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/700x38c-bike-tube/search-terms)
## **Top 700x38c bike tube 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.
0%10%$40K20%$80K30%$120K40%$160K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**2 PCS Heavy Duty Bike Tubes 700x38C 700x40C 700x43C 700x45C 38C/40C/42C/43C/45C Schrader Valve 35mm/48mm Bicycle Tubes Premium Quality Butyl Inner Tubes (Schrader Valve 35mm)**DBXIIART**$16.53**4.6★318 rev](https://www.amazon.com/dp/B0D11C6BJD) [2**700C Heavy Duty Bike Tubes 700x35C/38C/40C/43C (35/43-622) 700C Bicycle Tubes Premium Butyl Rubber Compatible with Road Gravel Mountain Hybrid Bike Tire Tubes Schrader Valve AV48mm 2-PCS**YunSCM**$16.92**4.4★3,540 rev](https://www.amazon.com/dp/B08K42N6Q9) [3**FANSPRO 2 Pack 700 x 35-43c Road Bike Inner Tubes 48mm Schrader Valve Premium Quality Butyl Inner Tube with 2 Tire Levers**FANSPRO**$15.95**4.3★803 rev](https://www.amazon.com/dp/B0BDGKYLZ5) [4**Bell Standard Bicycle Inner Tube 700 x 35/43c Presta Valve**BELL**$8.67**4.4★3,742 rev](https://www.amazon.com/dp/B007SNUJEY) [5**Goodyear Self-Sealing Bicycle Tube - 700c Bike Tube with Butyl Rubber - Dependable Mountain Bike Tubes for Premium Cycling - 700 X 35/43c**Goodyear**$11.64**4.2★500 rev](https://www.amazon.com/dp/B00WFSNWSC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Hydencamm 2 Pack 700x35C/38C/40C/43C AV48mm Schrader Valve 700c Bike Tube Butyl 700C Road Bike Tube with 2 Tire Levers 700c Tube Compatible with 700 x 35C 700x38C 700x40C 700x42C 700x43c Bike Tube**Hydencamm**$12.90**169 rev10mo ago](https://www.amazon.com/dp/B0D7HVKQ9C) [**2-PCS 700C Bike Tubes 700x35C/38C/40C/42C/43C 48mm Schrader Valve 35/43-622 Inner Tubes for 700 x 35C 700x38C 700x40C 700x42C 700x43C Road Gravel Bike Tire Tubes (G-274)**YunSCM**$14.58**695 rev1y ago](https://www.amazon.com/dp/B0FJ7ZQ2SM) [**2-PCS 700x35C/38C/40C/42C/43C Bike Tubes 48mm Presta Valve 35/43-622 Inner Tube 700C Bicycle Tubes Compatible 700 x 35C 700x38C 700 x 40C 700x42C 700x43C Bike Tire Tubes(G-190)**YunSCM**$15.16**147 rev2y ago](https://www.amazon.com/dp/B0D93DCG1H) [**2 PCS Heavy Duty Bike Tubes 700x38C 700x40C 700x43C 700x45C 38C/40C/42C/43C/45C Schrader Valve 35mm/48mm Bicycle Tubes Premium Quality Butyl Inner Tubes (Schrader Valve 35mm)**DBXIIART**$16.53**318 rev2y ago](https://www.amazon.com/dp/B0D11C6BJD) [**700x35C/38C/40C/42C/43C Bike Tubes 700C Bicycle Tubes Compatible 700 x 35C 700x38C 700 x 40C 700x42C 700x43C (35/43-622) Bike Tire Tubes 32mm Schrader Valve 2 PCS (G-163)**YunSCM**$15.22**102 rev3y ago](https://www.amazon.com/dp/B0CBTWRDCN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**700x35C/38C/40C/42C/43C Bike Tubes 700C Bicycle Tubes Compatible 700 x 35C 700x38C 700 x 40C 700x42C 700x43C (35/43-622) Bike Tire Tubes 32mm Schrader Valve 2 PCS (G-163)**YunSCM**$15.22**4.5★**▲ 85%**](https://www.amazon.com/dp/B0CBTWRDCN) [**2 PCS Heavy Duty Bike Tubes 700x38C 700x40C 700x43C 700x45C 38C/40C/42C/43C/45C Schrader Valve 35mm/48mm Bicycle Tubes Premium Quality Butyl Inner Tubes (Schrader Valve 35mm)**DBXIIART**$16.53**4.6★**▲ 81%**](https://www.amazon.com/dp/B0D11C6BJD) [**2-PCS 700C Bike Tubes 700x35C/38C/40C/42C/43C 48mm Schrader Valve 35/43-622 Inner Tubes for 700 x 35C 700x38C 700x40C 700x42C 700x43C Road Gravel Bike Tire Tubes (G-274)**YunSCM**$14.58**4.4★**▲ 34%**](https://www.amazon.com/dp/B0FJ7ZQ2SM) [**2-PCS 700x35C/38C/40C/42C/43C Bike Tubes 48mm Schrader Valve 35/43-622 Inner Tube 700C Bicycle Tubes for 700 x 35C 700x38C 700x40C 700x42C 700x43c Bike Tire Tubes (G-145)**YunSCM**$16.24**4.4★**▲ 22%**](https://www.amazon.com/dp/B096ZST8GG) [**Ultraverse Bike Inner Tube for 700x35-43c 28 inch Bicycle Wheel Sizes with 48mm Presta Valve - Butyl Rubber Tubes for Road and Gravel Bikes - 2 Pack with 2 tire levers Included**Ultraverse**$15.96**4.4★**▲ 14%**](https://www.amazon.com/dp/B097RYY254)
**~~View all trending →~~**
## **What buyers say about 700x38c bike tube**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**24%
*“Good Quality”*
**Size-Overall**17%
*“Fit well”*
**Value For Money**15%
*“Excellent value”*
**Advertised Vs Actual Product**12%
*“Does what I need”*
**Assembly/Installation**7%
*“Easy install”*
**Durability**6%
*“they're durable”*
**Thickness**4%
*“It is, as they claim, thicker than other tubes”*
**Leak-Proof**3%
*“So far, they hold air without mystery/slow leaks”*
**Weight Heavy**2%
*“Heavy duty”*
**Rubber Quality**2%
*“They are heavy rubber and valves”*
### **What buyers complain about **
**Quality-Overall**24%
*“Tube quality is poor”*
**Leak-Proof**18%
*“THEY LEAK”*
**Durability**13%
*“it popped within seconds”*
**Value For Money**5%
*“The cost also very high”*
**Size-Overall**4%
*“the air inlets are very short”*
**Weight Heavy**3%
*“They are a little heavy due to being heavy duty tubes”*
**Thin**3%
*“Very thin tubes”*
**Stitch/Finish/Polish**3%
*“no extreme riding the tube punctured/ripped at the seam”*
**Pressure**3%
*“my pump isnt showing any psi”*
**Advertised Vs Actual Product**3%
*“The Presta valve core on the tubes I received are not removable despite the product description stating they are”*
### **Top return reasons **
**Size-Overall**58%
**Advertised Vs Actual Product**9%
**Leak-Proof**7%
**Compatibility-Overall**5%
**Defective Material/Parts**3%
**Inflation/Deflation**3%
**Value For Money**2%
**Functionality-Overall**2%
**Material Quality**2%
**Durability**1%
## **Common questions**
- **Is 700x38c bike tube profitable to sell on Amazon United States?**
- The niche generates $401K/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +34.3%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the 700x38c bike tube niche?**
- 8 brands and 27 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in 700x38c bike tube?**
- Top complaints mined from reviews: Quality-Overall, Leak-Proof, Durability. The return rate is 2.2%.
- **When does demand for 700x38c bike tube peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 4.2× the quietest.
- **What does it cost to enter the 700x38c bike tube niche?**
- Listings span $8.67–$20.57; the average listing price is $15.82 (sweet spot $15–$100). The average incumbent carries 974 reviews — the moat a new listing must climb.
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