2-PCS 20x4 Self-Sealing Fat Bike Tubes 20 X 4.0 Super Automatic Repair, Puncture Resistant Compatible with 20x3.5/4.0 89/102-406 E-Bike Bicycle Tire Tubes AV32mm Schrader Valve

Features

• Designed for E-bike 20 "X4.0" inner tubes: 20"x3.5/4.0 (89/102-406) Schrader Valve fat inner tube, we design the most suitable inner tube for e-bike according to the demand, which can easily meet the demand of 20"x4.0". In fact, its width can be extended to 5.0"+, in order to ensure quality,we conservatively used in the 3.5/4.0 range to ensure its life and air tightness, and reduce the frequency of wear and replacement.
• Easy To USE: The Self Sealing Bike Inner Tube is a self-repair for some small holes or very fine cracks.For example, after a long time, some places will leak air quietly,accidentally hit nails and other problems, which are easy to repair.It is worth noting that our self-repairing inner tube can be used within the normal temperature environment and cold days -15 ℃,and it is more conducive to travel in cold weather.
• Safe Bike Tubes: Pre-installed with Sealant to provide maximum puncture protection and prevent flat tires on your bike.The puncture repair fluid circulates through the inner tube, automatically sealing the punctures.After testing, the leak can be repaired within 5~8 seconds under normal conditions.
• Excellent shock absorption ability: The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Butyl rubber for maximum ride comfort - upgrade your ride experience.
• Ultra Durable: Our inner tubes have higher puncture resistance than ordinary inner tubes, and the thicker body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use.
• Please note: Because the Self Sealing fluid is flowing, in order to prevent the liquid from flowing out during operation, please do not concentrate the center of gravity or the liquid near the air nozzle when pumping up.
• Installation: 20"x3.5"/4.0" bicycle replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct.
• This inner tube is compatible with the corresponding models of mountain bikes, road bikes, Cruiser bikes, electric bikes; At the same time, the increase in thickness can meet the needs of the longer driving range and load of the prevailing electric bicycles.