Schwalbe AV21F Inner Tube - 27.5"" - Schrader Valve
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27.5 x 3.00 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.71Visit shop →
27.5 x 2.50 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.10 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 3.00 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.25 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.75 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.40 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.60 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
27.5 x 2.35 650B SCHWALBE AV21F Inner Tube 40mm Schrader / Car / Auto ValveFree delivery in 1–3 days£10.99Visit shop →
Product Information
Full details
The Schwalbe AV21F inner tube is designed for cyclists seeking reliable performance and durability, particularly for 27.5" wheels on standard bicycles, e-bikes, and eMTBs. Its key benefit lies in exceptional air retention due to rigorous factory testing and a high-quality butyl rubber compound, minimizing the need for frequent pumping. A potential caveat is its specific tire width range, requiring users to confirm compatibility before purchase.
All features
| Model Part Number | 10400030 |
|---|---|
| Brand | Schwalbe |
Extended Product Information
FAQs
What is the main advantage of the Schwalbe AV21F inner tube?
The primary advantage is its exceptional air retention due to rigorous factory testing and a high-quality butyl rubber compound, meaning it needs inflating less often.
Can I use this tube on my standard mountain bike?
Yes, if your mountain bike has 27.5" wheels and your tire width falls within the 53mm to 76.2mm range, this tube is suitable.
Is the Schrader valve suitable for all bike pumps?
The Schrader valve is a very common type and is compatible with most standard bicycle pumps and many gas station air compressors.
How often should I check the air pressure in this tube?
It is recommended to check tire pressure before every ride, or at least weekly, as even high-retention tubes can lose small amounts of air over time.
What does 'heat molded process' mean for the tube's performance?
The heat molding process helps to create a more uniform wall thickness, which can improve air retention and reduce weight compared to tubes made with simpler methods.
Are there any special care instructions for this inner tube?
Regularly check tire pressure and inspect your tire for any debris that could cause a puncture. Store the tube in a cool, dry place when not in use.
What is the weight of this inner tube?
The Schwalbe AV21F inner tube weighs approximately 200 grams.
Troubleshooting
Inner tube loses air quickly
Check for punctures by submerging the inflated tube in water and looking for bubbles. Inspect the tire and rim for sharp objects or damage. Ensure the valve core is tightened and the valve stem is not damaged.
Difficulty inflating the tube
Ensure the Schrader valve cap is removed and the pump head is securely attached. Check that the valve stem is straight and undamaged.
Tube bulges or feels uneven
The tube may be twisted or not seated correctly within the tire. Deflate the tire slightly, reposition the tube to ensure it is flat and even, then re-inflate.
Pinch flat (tube cut on both sides)
This usually indicates the tire pressure was too low for the riding conditions, or the tire was not mounted correctly. Ensure you inflate the tire to the manufacturer's recommended pressure for your weight and riding style.
Pros and Cons
Pros
- Excellent air retention reduces maintenance.
- Durable construction for a long service life.
- Suitable for a variety of modern bicycle types, including e-bikes.
- Easy inflation with a standard Schrader valve.
- Environmentally friendly with recyclable materials.
Cons
- Specific valve length (4cm) may not fit all rims.
- Requires confirmation of compatibility with tire width.
- Slightly heavier (200g) compared to some ultra-light tubes.
Setup, Compatibility & Care
Setup:
- Ensure the tire is properly seated on the rim.
- Partially inflate the Schwalbe AV21F tube to give it shape.
- Insert the inflated tube into the tire, starting with the valve stem through the rim hole.
- Ensure the tube is not twisted and is evenly distributed within the tire.
- Inflate the tire to the recommended pressure indicated on the tire sidewall.
Compatibility:
- Wheel Size: Designed for 27.5" wheels.
- Tire Width: Compatible with tire widths ranging from 53mm to 76.2mm (approximately 2.1" to 3.0"). Always check your tire's sidewall for its exact width.
- Valve Type: Features a Schrader valve (4cm length).
Care:
- Regularly check tire pressure and inflate as needed to maintain optimal performance and prevent pinch flats.
- Inspect the inside of the tire casing for sharp objects or debris that could puncture the tube.
- Store the inner tube in a cool, dry place away from direct sunlight and excessive heat when not in use.