---
title: "27.5 Inner Tube — £148K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/sports-outdoors/27-5-inner-tube"
last_updated: "2026-07-31T17:39:57.246Z"
locale: en
meta:
description: "Niche score 53/100 · £148K/yr market · 143K searches/yr. Prices mostly outside the sweet spot ($5.45–$15.48) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · £148K/yr market · 143K searches/yr. Prices mostly outside the sweet spot ($5.45–$15.48) keeps it on the watch list. Data updated Jul 2026."
"og:title": "27.5 Inner Tube — £148K/yr Amazon UK Niche (2026) - Flapen"
---
# **27.5 inner tube**
**Worth a look**
Shows low returns (0.9%), but prices mostly outside the sweet spot ($5.45–$15.48) keeps it on the watch list.
Market size 32Growth 64Conversion 92Competition 38Returns 96Price range 5Avg price 26Brand share 23Review moat 69Quality gap 67
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.3%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****723.79**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Growth**
**Good****+42.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****£148K**
£148K/yr · 143K searches
**Avg price**
**Okay****£9.18**
avg listing price — sweet spot $15–$100
**Brand share**
**Bad****91%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****£5.45–£15.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 27.5 inner tube is a £148K/yr Amazon United Kingdom market (143K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in May–Jul. Verdict: Worth a look — 53/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **27.5 inner tube market data**
- **Units sold / yr**
- **15K–20K**
- avg 750–1,000/product
- **Revenue / yr**
- **£138K–£184K**
- units × avg price
- **Conversion rate**
- **11.3%**
- **Avg BSR**
- **#136**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **74%**
- **Out of stock**
- **0.3%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **192 days**
## **Competition & brand share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**32**
**Top-5 brand share**
**91%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 100%
**Open market**
**5%**
- Baldwins45% - Continental25% - YunSCM9% - WELDTITE6% - Slime5% - Hutchinson4% - Open — no brand owns it (2 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +42.2% search growth over the last 90 days.
4K3KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jul · busiest ÷ quietest = 2.5×
[**Open Trend **](https://flapen.com/research/uk/sports-outdoors/27-5-inner-tube/trend)
## **Top 27.5 inner tube search terms**
- **27.5 inner tube**47K/yr+23.3%8.0% conv. - **27.5+ inner tube**31K/yr+56.6%8.4% conv. - **inner tube 27.5**27K/yr+38.2%7.0% conv. - **27.5 x 2.10 inner tube**11K/yr+66.1%10.8% conv. - **bike inner tube 27.5 x 2.10**8K/yr+53.5%7.4% conv. - **inner tube 27.5 x 2.10**5K/yr+130.8%9.6% conv. - **mountain bike inner tube 27.5**4K/yr+25.9%8.4% conv. - **27.5 inner tube presta valve**4K/yr+32.7%8.5% conv. - **27.5 x 2.25 inner tube**3K/yr+40.3%9.5% conv. - **650b inner tube**3K/yr+45.1%4.1% conv. [**All search terms **](https://flapen.com/research/uk/sports-outdoors/27-5-inner-tube/search-terms)
## **Top 27.5 inner 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%£15K20%£30K30%£45K40%£59K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER**Baldwins**£5.45**4.3★821 rev](https://www.amazon.co.uk/dp/B09KRYBTH9) [2**Continental Unisexs 42mm MTB Presta Valve Inner TubeBlack 27.5 x 1.75 2.5Inch/42 mm**Continental**£5.85**4.5★3,520 rev](https://www.amazon.co.uk/dp/B00G8QH7UG) [3**Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Schrader Valve & BALDYS TYRE LEVER**Baldwins**£5.47**4.6★246 rev](https://www.amazon.co.uk/dp/B0C9XJB5MS) [4**Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER (Pack of 2)**Baldwins**£9.15**4.2★334 rev](https://www.amazon.co.uk/dp/B0C2ND9F1W) [5**Slime 30077 Bike Inner Tube with Slime Puncture Sealant Self Sealing Prevent and Repair Schrader Valve 27.5 x 1.5-2.3**Slime**£7.22**4.4★2,263 rev](https://www.amazon.co.uk/dp/B017MH6YEO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**YunSCM 2-Pack 27.5 Schrader Valve Bike Tubes 27.5x2.125/2.40 AV32mm Black Fits 27.5 x 2.125-2.4 Tires**YunSCM**£12.47**88 rev1y ago](https://www.amazon.co.uk/dp/B0D9Q4YJF3) [**Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER (Pack of 2)**Baldwins**£9.19**164 rev2y ago](https://www.amazon.co.uk/dp/B0CJQDLVXK) [**Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Schrader Valve & BALDYS TYRE LEVER**Baldwins**£5.47**246 rev3y ago](https://www.amazon.co.uk/dp/B0C9XJB5MS) [**Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER**Baldwins**£5.46**104 rev3y ago](https://www.amazon.co.uk/dp/B0C9XHNVQR) [**Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER (Pack of 2)**Baldwins**£9.15**334 rev3y ago](https://www.amazon.co.uk/dp/B0C2ND9F1W)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Hutchinson Pack of 2 Inner Tubes Presta Valve (48mm) 27.5 x 1.70/2.35**Hutchinson**£5.68**4.3★**▲ 119%**](https://www.amazon.co.uk/dp/B0160VR76M) [**YunSCM 2-Pack 27.5 Schrader Valve Bike Tubes 27.5x2.125/2.40 AV32mm Black Fits 27.5 x 2.125-2.4 Tires**YunSCM**£12.47**4.2★**▲ 110%**](https://www.amazon.co.uk/dp/B0D9Q4YJF3) [**Continental Unisexs 42mm MTB Presta Valve Inner TubeBlack 27.5 x 1.75 2.5Inch/42 mm**Continental**£5.85**4.5★**▲ 108%**](https://www.amazon.co.uk/dp/B00G8QH7UG) [**Slime 30077 Bike Inner Tube with Slime Puncture Sealant Self Sealing Prevent and Repair Schrader Valve 27.5 x 1.5-2.3**Slime**£7.22**4.4★**▲ 74%**](https://www.amazon.co.uk/dp/B017MH6YEO) [**Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER**Baldwins**£5.46**4.1★**▲ 20%**](https://www.amazon.co.uk/dp/B0C9XHNVQR)
**~~View all trending →~~**
## **What buyers say about 27.5 inner tube**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**31%
*“Good quality product delivered promptly”*
**Value For Money**31%
*“Great product great price value for money”*
**Advertised Vs Actual Product**14%
*“Does Exactly what it should”*
**Size-Overall**10%
*“Easy fit”*
**Inflation/Deflation**3%
*“It inflated well”*
**Leak-Proof**1%
*“Such an amazing item so you wouldn't even know if you had a puncture because itself seals which is an amazing bit of technology for the debris in today's roads you cannot ask for much more of a high grade item”*
**Portability**1%
*“Perfect for modern road travel”*
**Measurement/Reading Accuracy**1%
*“100% accurate with description”*
**Assembly/Installation**1%
*“easy to install”*
**Rubber Quality**1%
*“They have given me absolutely no issues whatsoever on the trail—Continental's seamless butyl rubber construction offers brilliant puncture resistance”*
### **What buyers complain about **
**Durability**16%
*“burst after a few days”*
**Quality-Overall**14%
*“Rubbish”*
**Flatness**11%
*“it went flat again a few days later when I got my bike back out”*
**Size-Overall**10%
*“Not fit for purpose”*
**Functionality-Overall**8%
*“Didn't work”*
**Rubber Quality**7%
*“have located a manufacturing defect in that the rubber was pitted”*
**Inflation/Deflation**7%
*“infinitely deflating tyre”*
**Value For Money**4%
*“Competitively priced”*
**Advertised Vs Actual Product**4%
*“These definitely do not do what they say on the box”*
**Heating**3%
*“Amazing pre filled tubes just not effective in heat”*
### **Top return reasons **
**Size-Overall**51%
**Inflation/Deflation**10%
**Defective Material/Parts**8%
**Leak-Proof**6%
**Functionality-Overall**5%
**Durability**4%
**Compatibility-Overall**3%
**Flatness**1%
**Ease Of Use**1%
**Advertised Vs Actual Product**1%
## **Common questions**
- **Is 27.5 inner tube profitable to sell on Amazon United Kingdom?**
- The niche generates £148K/yr across 19 tracked products. 90-day search growth is +42.2%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the 27.5 inner tube niche?**
- 8 brands and 32 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 91% of demand.
- **What do buyers complain about in 27.5 inner tube?**
- Top complaints mined from reviews: Durability, Quality-Overall, Flatness. The return rate is 0.9%.
- **When does demand for 27.5 inner tube peak?**
- Demand peaks in May–Jul; the busiest month runs 2.5× the quietest.
- **What does it cost to enter the 27.5 inner tube niche?**
- Listings span £5.45–£15.48; the average listing price is £9.18 (sweet spot $15–$100). The average incumbent carries 724 reviews — the moat a new listing must climb.
## **Related niches in Sports & Outdoors**
- 67 [**snorkel set adults**](https://flapen.com/research/uk/sports-outdoors/snorkel-set-adults)£500K/yr+112.4%**Worth a look**- 67 [**dry bag**](https://flapen.com/research/uk/sports-outdoors/dry-bag)£454K/yr+52.7%**Worth a look**- 67 [**stunt scooter for kids ages 8-12**](https://flapen.com/research/uk/sports-outdoors/stunt-scooter-for-kids-ages-8-12)£174K/yr+41.2%**Worth a look**- 67 [**kids bike**](https://flapen.com/research/uk/sports-outdoors/kids-bike)£98K/yr+47.6%**Worth a look**- 67 [**hula hoop kids**](https://flapen.com/research/uk/sports-outdoors/hula-hoop-kids)£54K/yr+56.0%**Worth a look**- 68 [**gymnastics bar**](https://flapen.com/research/uk/sports-outdoors/gymnastics-bar)£572K/yr+44.1%**Worth a look**[**All Sports & Outdoors niches **](https://flapen.com/research/uk/sports-outdoors)