The Schwalbe Tube No. 21F fits 27.5" or 27.5+" tires with a width of 54-75 mm and is generally used in mountain bikes.

The Schwalbe Freeride shines with a large volume at a low weight.

Due to their excellent manufacturing, Schwalbe tubes have proven themselves on the market for years. They are uniform in wall thickness and round in shape. Their precise alignment makes them durable at the seam. A comparison test showed: The Schwalbe tube maintains air pressure significantly longer than other tubes (the latter lost nearly twice as much air pressure in 30 days compared to the Schwalbe tube). A possible reason for this could be a lower butyl content in the other tubes. The special quality of Schwalbe tubes results from the uniqueness of their rubber compound. To ensure this high quality, each individual Schwalbe tube is inflated and inspected for at least 24 hours before leaving the factory.

Features:

• Freeride – low weight (200g)
• Butyl rubber ensures double the air retention
• 24-hour test for each tube
• High elasticity allows coverage of many tire sizes per tube
• Recycling process achieves a very good energy balance

Suitable for tire sizes:

54-584 | 26 x 1 1/2 x 2
54-584 | 27.5 x 2.10 | 650B
57-584 | 27.5 x 2.25 | 650B
60-584 | 27.5 x 2.35 | 650B
62-584 | 27.5 x 2.40 | 650B
64-584 | 27.5 x 2.50 | 650B
65-584 | 27.5 x 2.60 | 650B
70-584 | 27.5 x 2.75 | 650B
70-584 | 27.5 x 2.80 | 650B
74-584 | 27.5 x 2.90 | 650B
75-584 | 27.5 x 3.00 | 650B

Valves:

• AV = Auto, Schrader
• DV = Dunlop, Blitz, German valve
• SV = Sclaverand, Presta, French valve (40 mm)

Scope of delivery:

• 1 x Schwalbe Tube No. 21F
  including valve