Ralson inner tube 16x1.75/2.125 AV 40 mm 305x47/57

Ralson inner tube 16x1.75/2.125 AV 40 mm 305x47/57

RALSON inner tube 16 × 1.75–2.125 (47/57-305) – AV car valve 40 mm

RALSON 16 × 1.75–2.125 is a quality bicycle inner tube intended for childrens bikes with 16-inch wheels and a corresponding tyre width. With the size designation 47/57-305, it is suitable for tyres 47–57 mm wide with a rim bead seat diameter of 305 mm.

The tube is fitted with a 40 mm AV (Schrader) car valve, which allows easy and convenient inflation with ordinary bicycle pumps with a matching head as well as with car compressors.

It is a practical choice for everyday childrens cycling and leisure rides, and as a spare tube in case of a puncture.

For 16" childrens bikes

The RALSON tube is intended for 16-inch wheels with a rim diameter of 305 mm.

This size is commonly used on childrens bikes on which children gain their first experience of riding independently and gradually develop their cycling skills.

The tube is suitable for ordinary riding on asphalt roads, cycle paths and paved surfaces as well as for leisurely family rides.

Size 16 × 1.75–2.125 (47/57-305)

The tube is marked with the inch size 16 × 1.75–2.125" and the ETRTO range 47/57-305.

The ETRTO designation indicates:

• 47–57 mm – declared range of tyre widths
• 305 mm – rim bead seat diameter

Thanks to this range, the tube is suitable for several widths of childrens tyres with the same rim diameter.

Before purchasing, we recommend checking the exact size stated on the sidewall of the original tyre.

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 popular 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, we recommend checking that the rim has a hole intended for an AV car valve.

A practical spare tube for a childrens bike

RALSON 16 × 1.75–2.125 is suitable for replacing a damaged or worn tube on a compatible childrens bike.

It can also serve as a spare tube for family cycling trips or as part of standard service equipment.

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 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 declared width range of 47–57 mm and the 40 mm 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: 16 × 1.75–2.125"
• ETRTO range: 47/57-305
• Rim diameter: 305 mm
• Declared range of tyre widths: 47–57 mm
• Valve type: AV – car valve (Schrader)
• Valve length: 40 mm
• Purpose: childrens bikes
• Use: everyday riding, leisure cycling, family cycling trips
• Suitable as: a replacement or spare tube

Main advantages:

• Suitable for 16-inch childrens bikes with a 305 mm rim
• Declared tyre width range of 47–57 mm
• 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 16 × 1.75–2.125 (47/57-305) inner tube with a 40 mm AV car valve is a practical choice for childrens bikes with 16-inch wheels and a rim diameter of 305 mm. Thanks to the declared width range of 47–57 mm 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.