Inner tube ULIP 20×4.0 for ENGWE M1

ULIP Inner Tube 20×4.0 for ENGWE M1

A model-specific offering for the ENGWE M1, a two-seater fat e-bike in moped style. The official specification lists 20 × 4.0 fat tires. The ULIP inner tube is therefore intended for replacement on a bicycle that still uses the original or equivalent 20×4.0 tire with an inner tube.

Why it's suitable

• Size: 20×4.0; the manufacturer's additional inner tube designation is 3.50-16.
• Use: wide fat-bike tires for asphalt, gravel, sand, and other mixed surfaces.
• Material: flexible butyl rubber for good air retention and cushioning.
• Model: prepared as a precisely targeted offer for the ENGWE M1.

Verification before ordering

Check the existing tire's sidewall for the 20×4.0 marking and the type of valve/rim. Models may vary by year or market. The inner tube is not intended for dimensions 20×3.0, 20×2.125, 24×4.0, or 26×4.0 and is not a substitute for a dedicated tubeless version. The package contains one inner tube.