Sunlight Inner Tube – 20 × 1-1/8 (451 × 28) | 32 mm Schrader Valve
This Sunlight inner tube is designed for 20-inch wheels using the ISO 451 standard and a Schrader valve, providing a correct replacement for narrow, high-pressure small-wheel applications.
Built to fit ISO 451 rims, this tube is commonly used on folding bikes, recumbents, and select performance-oriented small-wheel bikes where precise sizing is critical. The straight Schrader valve allows easy inflation with standard floor pumps and air compressors.
Key Features
• Designed specifically for ISO 451 (20-inch) wheels
• Suitable for narrow, high-pressure tire applications
• Schrader valve compatible with standard pumps and compressors
• Straight, smooth valve stem for easy inflation
• Removable valve core for serviceability
Technical Details
• Wheel Size: 20 inch
• Tire Compatibility: 20 × 1-1/8 (451 × 28)
• ISO (BSD): 451
• Valve Type: Schrader
• Valve Length: 32 mm
• Valve Angle: 0° (straight)
• Valve Stem: Smooth
• Valve Core: Removable
• Wall Thickness: 0.9 mm
• Flat Fold Width: 30 mm
Compatibility Note
This tube fits ISO 451 wheels only and is not compatible with standard 20-inch ISO 406 wheels. Always verify the ISO number printed on the tire sidewall before purchase to ensure correct fit.