Tendy Style Schwalbe Inner Tube 21F for 27.5+ Freeride – 5 Pieces

The No. 21F tube is specifically designed for extra wide Freeride tyres.

Specifications:

Application:

Freeride

ETRTO:

54-584 to 75-584

Tyre Dimensions:

27.5 x 2.1 to 27.5 x 3.0

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:

27.5×2.10-3.00 AV / Schrader 40 mm

Valve Type:

AV (Auto / Schrader valve)

Valve Length:

40 mm

Manufacturer Number:

10400030

27.5×2.10-3.00 SV 40 mm

Valve Type:

SV (Sclaverand/Presta)

Valve Length:

40 mm

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 SV 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 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 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 tube covers a large number of tyre sizes. For example, 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:

• 5 x Schwalbe No. 21F tubes