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Rubena Pram/Bike 12 1/2" Bent Valve Inner Tube Car Valve SV45 N07

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Rubena Brand 12 and 12 1/2" x1.75-2.1" Pram/Bike Bent Valve Inner Tube Car Valve

  • This size is most often used on Prams and children's 12" bikes.
  • The 45 degree bent valve is sometimes required to allow pump access in small bike wheels and prams
  • Auto valve type (AKA Car Valve, Schrader Valve or American Valve).
  • Reinforced dual thickness tube/valve interface to prevent punctures.
  • Standard weight butyl rubber construction.

These innertubes are compatible with the following ETRTO tire sizes:

12" x 1.5" = ETRTO 37-203

12" x 1.75" = ETRTO 44-203

12" x 1.8" = ETRTO 47-203
12" x 1.95" = ETRTO 50-203
12" x 2.0" = ETRTO 52-203
12" x 2.1" = ETRTO 54-203
12" x 2.125" = ETRTO 55-203
12" x 2 1/4" = ETRTO 57-203
12 1/2" x all the sizes shown above

Click to find out more about ETRTO tyre sizing and whether this is the right tube for your bike. 

About Rubena

Rubena are one of Europe€™s leading specialist producers of bicycle tyres and inner tubes. First known as Rubena in 1947 this company has a rich history and is based in the Czech Republic. All of Rubena's products are strictly quality controlled and they have a great range which means they can offer some of the more obscure bicycle and children's pram inner tubes and tyres which aren't always available from other producers such as bent/90 degree valve options. Thank you Rubena for solving quick a few problem for cyclists and parents!


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We have a huge range for bikes, prams, wheelbarrows, scooters and much more. We offer you great prices, great service and FREE UK Delivery. Plus our own brand tubes have a no-return-required guarantee!