Ralson inner tube 18x1.75-2.125 AV/40 mm

Ralson inner tube 18x1.75-2.125 AV/40 mm

RALSON inner tube 18 × 1.75–2.125 – AV car valve 40 mm

RALSON 18 × 1.75–2.125 is a bicycle inner tube intended for childrens and junior bikes with 18-inch wheels and a corresponding tyre width. With its range of 1.75 to 2.125 inches, it is a practical choice for routine bike maintenance, replacing a damaged tube and leisure cycling.

The tube is fitted with a 40 mm AV (Schrader) car valve, which allows easy inflation with compatible bicycle pumps and car compressors.

It is suitable for everyday childrens riding and family cycling trips, and as a spare tube in case of a puncture.

For 18" childrens and junior bikes

The RALSON tube is intended for bikes with 18-inch wheels and tyres of the corresponding size.

This size is used mainly on childrens bikes that serve for the first longer rides, riding on cycle paths and developing cycling skills.

The tube is suitable for ordinary leisure use on asphalt roads, paved paths and in lighter terrain.

Size 18 × 1.75–2.125

The tube is intended for tyres 1.75–2.125" wide, which corresponds to approximately 44–54 mm.

Ordinary 18-inch childrens bikes often use a rim with a bead seat diameter of 355 mm.

Before purchasing, we recommend checking the exact ETRTO designation on the sidewall of the original tyre to ensure the correct tube is chosen.

AV car valve – length 40 mm

The tube is fitted with an AV (Schrader) car valve with a length of 40 mm.

The car valve is practical mainly thanks to its ease of use and the wide availability of compatible inflation devices.

Advantages of the 40 mm AV car valve:

• Easy and convenient inflation
• Compatibility with pumps for car valves
• Can be inflated with a car compressor
• Practical valve length of 40 mm
• Simple pressure checking and topping up

Before fitting, it is important to check that the rim has a hole intended for an AV car valve.

A practical spare tube for a childrens bike

RALSON 18 × 1.75–2.125 is suitable for replacing a worn or damaged tube on a compatible childrens bike.

It can also serve as a spare tube for family cycling trips or longer rides.

When fitting, we recommend checking the inner surface of the tyre, removing any sharp objects and verifying that the rim tape is in good condition.

Easy maintenance and regular inflation

Correct tyre pressure is important for a comfortable ride, good rolling of the wheel and reducing the risk of damage to the tube.

Thanks to the AV car valve, the pressure can be easily checked and topped up as needed.

When inflating, the recommended pressure limits stated on the tyre and rim must be observed.

Suitable for everyday childrens cycling

The RALSON tube is a practical replacement component for childrens bikes with the corresponding tyre size.

Thanks to the universal width range and the AV car valve, it is suitable for routine repairs, regular maintenance and preparing the bike for the new cycling season.

Main features:

• Manufacturer: Ralson
• Product type: bicycle inner tube
• Size: 18 × 1.75–2.125"
• Wheel diameter: 18"
• Compatible tyre width: approximately 44–54 mm
• Valve type: AV – car valve (Schrader)
• Valve length: 40 mm
• Purpose: childrens and junior bikes
• Use: everyday riding, leisure cycling, family cycling trips
• Suitable as: a replacement or spare tube

Main advantages:

• Suitable for compatible 18-inch childrens bikes
• Tyre width range 1.75–2.125"
• Practical AV (Schrader) car valve
• Valve length 40 mm
• Easy inflation with compatible pumps and compressors
• Practical when replacing a damaged tube
• Suitable as a spare tube for family trips

Use: The RALSON 18 × 1.75–2.125 inner tube with a 40 mm AV car valve is a practical choice for childrens and junior bikes with 18-inch wheels. Thanks to the 1.75–2.125" width range and the easy-to-use car valve, it is suitable for ordinary riding and family cycling trips, and as a replacement tube for bike repairs and maintenance.