27.5 Inner Tube
Worth a lookShows low returns (0.9%), but prices mostly outside the sweet spot ($5.45–$15.48) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Conversion
Great11.3%search→purchase rate — share of searches ending in a sale
Review moat
Good723.79avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Growth
Good+42.2%90-day search growth — must beat 0% to launch
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Market size
Okay£148K£148K/yr · 143K searches
Avg price
Okay£9.18avg listing price — sweet spot $15–$100
Brand share
Bad91%top-5 brand share — brand-locked demand
Price range
Bad£5.45–£15.48cheapest to priciest tracked listing — scored on the share inside $15–$100
Is 27.5 inner tube profitable on Amazon?
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
27.5 inner tube market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- 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: brands, sellers & click 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%)
27.5 inner tube demand & seasonality
Weekly Amazon search volume, last 104 weeks — +42.2% search growth over the last 90 days.Peak months: May, Jul · busiest ÷ quietest = 2.5×
Top 27.5 inner tube search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- 27.5 inner tube47K/yr
- 27.5+ inner tube31K/yr
- inner tube 27.527K/yr
- 27.5 x 2.10 inner tube11K/yr
- bike inner tube 27.5 x 2.108K/yr
- inner tube 27.5 x 2.105K/yr
- mountain bike inner tube 27.54K/yr
- 27.5 inner tube presta valve4K/yr
- 27.5 x 2.25 inner tube3K/yr
- 650b inner tube3K/yr
Top 27.5 inner tube products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER
Baldwins£5.454.3★821 rev
Continental Unisexs 42mm MTB Presta Valve Inner TubeBlack 27.5 x 1.75 2.5Inch/42 mm
Continental£5.854.5★3,520 rev
Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Schrader Valve & BALDYS TYRE LEVER
Baldwins£5.474.6★246 rev
Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER (Pack of 2)
Baldwins£9.154.2★334 rev
Slime 30077 Bike Inner Tube with Slime Puncture Sealant Self Sealing Prevent and Repair Schrader Valve 27.5 x 1.5-2.3
Slime£7.224.4★2,263 rev
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£12.4788 rev
Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER (Pack of 2)
Baldwins£9.19164 rev
Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Schrader Valve & BALDYS TYRE LEVER
Baldwins£5.47246 rev
Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER
Baldwins£5.46104 rev
Baldwins Bike Inner Tube 27.5 x 1.75 to 2.125 Schrader Valve & BALDYS TYRE LEVER (Pack of 2)
Baldwins£9.15334 rev
Trending
90-day click momentum
Hutchinson Pack of 2 Inner Tubes Presta Valve (48mm) 27.5 x 1.70/2.35
Hutchinson£5.684.3★
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£12.474.2★
Continental Unisexs 42mm MTB Presta Valve Inner TubeBlack 27.5 x 1.75 2.5Inch/42 mm
Continental£5.854.5★
Slime 30077 Bike Inner Tube with Slime Puncture Sealant Self Sealing Prevent and Repair Schrader Valve 27.5 x 1.5-2.3
Slime£7.224.4★
Baldwins Bike Inner Tube 27.5 x 2.20 to 2.40 Presta Valve & BALDYS TYRE LEVER
Baldwins£5.464.1★
What reviews say buyers love and hate about 27.5 inner tube
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality product delivered promptly”
“Great product great price value for money”
“Does Exactly what it should”
“Easy fit”
“It inflated well”
“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”
“Perfect for modern road travel”
“100% accurate with description”
“easy to install”
“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
“burst after a few days”
“Rubbish”
“it went flat again a few days later when I got my bike back out”
“Not fit for purpose”
“Didn't work”
“have located a manufacturing defect in that the rubber was pitted”
“infinitely deflating tyre”
“Competitively priced”
“These definitely do not do what they say on the box”
“Amazing pre filled tubes just not effective in heat”
Top return reasons
Common 27.5 inner tube 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.
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