Schwalbe Inner Tube 21F for 27.5+ Freeride

The No. 21F inner tube is specifically designed for extra wide Freeride tyres. The 27.5" size works well in places where big 29" wheels are too tight.

Specifications:

Application:

Freeride

ETRTO:

54-584 to 75-584

Tyre Dimensions:

27.5 x 2.10 to 27.5 x 3.00

Inner Tube Material:

butyl

Valve Type:

AV / Schrader 40 mm, SV / Presta 40 mm

Dimensions (ETRTO):

• 27.5 x 2.10 (54-584)
• 27.5 x 2.25 (57-584)
• 27.5 x 2.35 (60-584)
• 27.5 x 2.50 (62-584)
• 27.5 x 2.60 (65-584)
• 27.5 x 2.75 (70-584)
• 27.5 x 3.00 (75-584)

Models:

27.5x2.10-3.00 AV / Schrader 40 mm

Valve Type:

AV (Auto / Schrader valve)

Valve Length:

40 mm

Type:

AV21F

Manufacturer Number:

10400030

27.5x2.10-3.00 SV / Presta 40 mm:

Valve Type:

SV (Sclaverand/Presta)

Valve Length:

40 mm

Type:

SV21F

Manufacturer Number:

10400073

Valve Information

Tubes are available with various valve types.
Choosing a valve is dependent on application and the rim's valve hole diameter.

AV / Schrader Valve:

• Synonyms: Auto Valve (AV), Schrader Valve
• Outer Diameter: 8.5 mm

SV / Presta Valve:

• Synonyms: Sclaverand Valve (SV), French Valve, Presta Valve
• Outer Diameter: 6.5 mm
• Other: all Schwalbe tubes with a Presta valve can be unscrewed. (To lengthen the valve, add anti-flat agents, etc.)

Technology:

Inflation Pressure Stability
A Schwalbe inner tube maintains the air much longer. The quality of the inner tube is already determined by its raw materials, through the ingredients and the purity of the rubber compound. During vulcanisation, each Schwalbe inner tube is placed in a mould and is then inflated. This is the only way to ensure a uniform wall thickness and excellent air retention.

Reliability
Rigorous monitoring that ensures the best operational reliability: each inner tube is inflated in the fabric and stored under pressure for 24 hours to check the air retention ability.

Tube Groups System
Due to its high elasticity and quality, a single inner tube covers a large number of tyre sizes. For example, inner tube no. 17 works just as well for 28 mm wide tyres as for 47 mm wide tyres. Only an extremely high-quality and reliable inner tube can meet this requirement.

Contents:

• 1 x Schwalbe No. 21F inner tubes