Sunlite Inner Tube – 20 × 1.25–1.50 (406 × 32–37) | 32 mm Presta Valve

This Sunlite inner tube is a standard replacement option for 20-inch wheels using ISO 406 rims and a Presta valve.

Designed for common small-wheel bikes, this tube fits folding bikes, youth bikes, and compact commuter or utility bikes that use narrower 20-inch tires. The threaded Presta valve supports secure pump attachment and precise inflation control for higher-pressure applications.

Key Features
• Designed for 20-inch wheels with narrower tires
• Correct fit for ISO 406 rims
• Presta valve for bikes set up with Presta-only rims
• Threaded valve stem for secure pump connection
• Removable valve core for serviceability

Technical Details
• Wheel Size: 20 inch
• Tire Compatibility: 20 × 1.25–1.50 (406 × 32–37)
• ISO (BSD): 406
• Valve Type: Presta
• Valve Length: 32 mm
• Valve Angle: 0° (straight)
• Valve Stem: Threaded
• Valve Core: Removable
• Wall Thickness: 0.9 mm
• Flat Fold Width: 33 mm

This tube is a reliable, no-frills choice for riders who need an accurately sized Presta-valve inner tube for standard 20-inch ISO 406 wheels.