Schwalbe SV/AV21 MTB Inner Tube - 650B/27.5"
Schwalbe SV21/AV21 - 27.5 x 1.50 - 2.40" (650B) Schrader or Presta Inner Tube
- Extremely airtight! The Butyl rubber compound prevents pressure loss and fewer occasions to inflate. Extremely reliable!
- Quality control for safer cycling: Each tube is checked twice at the factory to ensure safer cycling. Having the correct pressure means fewer punctures and reduced rolling resistance
- 27.5 x 1.50 - 2.40"
Mabawsa Ritchie I've tried tubeless but hate riding on squidgy tires and there's far less mess with these things. If you've ever had to put tube in a tubeless tire to get home you'll know what I mean
The bleak midwinter Feels more heavy duty rubber with a lock down nut on the valve to rim. I like the clear dust cap - cool.
Mr Slater I've had a few sets of these, no problems with them. Great service from Merlin again, thank you
Stephen Good quality inner tubes
Rayland These are difficult to get hold of for Schrader valves. Merlin is my go to shop for stuff like this
Mr Ilyasa another one to keep as spare/when riding
Mr Fraser Its an inner tube - it does what it should without surprises.
Mr Dantay Great product! Recommended.
Jonathan Reliable Schwalbe tube, good quality.
Thomas Always bought and used Schwalbe inner tubes as they seem to just keep going! Great quality at a great price from Merlin Cycles and good customer service.
Mr Ashdown Perfect spare tubes for an ebike with 650B tyres.
Spike Top quality tube. Ready as a spare, packs nice and small.
Mr Bowen Hard to find this size of tube with right valve locally. Merlin had it and at half the price of bike shop.
Andrew Not a lot to say really decent quality innertube, does what its supposed to.
Mr Morris Very good quality inner tubes. come with better dust caps than other brands I have bought. Paired with the Schwalbe marathon plus MTB tyres on my E bike hope to reduce the risk of punctures. Like the fact these are designed to be less porous and so retain air for longer.
LAVAU80 Great quality as always from Schwalbe.