16-Inch Inner Tubes for Kids Bikes and Trikes Don't let a perfectly working road bike or BMX bike go to waste. We offer replacement inner tubes for almost all sizes and types of bikes so can rest easy knowing that you'll have a dependable source for high-quality and durable replacement inner tubes. Give your preschooler and school-age kids a good start in bicycle riding with 16-inch bikes that are made more comfortable and efficient by our 16-inch x 1.75 - 2.125-inch inner tubes. Whether they're out riding in your yard or out on the sidewalk, our inner tubes will be your dependable aid. Superior-Quality Inner Tubes Pneumatic tires are only as good as their inner tubes. The CalPalmy 16" x 1.75/1.95/2.125" Kids Bike Replacement Inner Tubes offer clear advantages on quality and performance. Thicker, stronger, and more durable than average inner tubes, these inner tubes offer superior shock and vibration dampening, tear-resistance, wear-resistance, aging-resistance. Ride comfortably, as these inner tubes allow you to feel like gliding over rough and bumpy spots. And for kids experiencing their first foray into riding bikes, the comfort and safety of these inner tubes will contribute to the wonderful memories they'll have of this time.