20 Inch Bike Tube | Sunlite Standard & Thorn Resistant Schrader
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20 Inch Bike Tube: get back riding today
Flat tire? The Sunlite 20 inch bike tube gets your BMX, kids bike or cruiser rolling again. Choose the Standard tube for a light, budget fix, or the Thorn Resistant tube, with a wall nearly 5x thicker, if you keep getting flats from goatheads, glass and thorns. Every tube has a Schrader valve, the same valve as a car tire, so it works with almost any pump.
- Fits 20" (ISO 406) BMX, kids and cruiser wheels
- Three width ranges: 1.50–1.95", 2.0–2.25" and 2.3–2.40"
- Standard (0.9mm wall) or Thorn Resistant (4.3mm wall)
- Schrader valve with removable core, 32mm valve length
- Butyl rubber holds air longer than latex
Which tube do I need?
|
Your tire size (on the sidewall) |
Pick this size |
Standard |
Thorn Resistant |
|---|---|---|---|
|
20 x 1.50" to 1.95" (kids bikes, old school BMX) |
20 x 1.50–1.95" |
$9.95 |
$15.95 |
|
20 x 2.0" to 2.25" (most BMX bikes) |
20 x 2.0–2.25" |
$9.95 |
$16.95 |
|
20 x 2.3" to 2.4" (new school BMX, wide tires) |
20 x 2.3–2.40" |
$12.95 |
$16.95 |
Product use
The Sunlite 20 inch bike tube sits inside your tire and holds the air. Use it to fix a flat, replace an old cracked tube, or carry as a spare. Read the size on the side of your tire, pick the range it falls in, then pick Standard or Thorn Resistant. To install, let the air out, pop one side of the tire off with tire levers, swap the tube, tuck the tire back on and pump to the pressure printed on your tire.
Why BMX riders use the Sunlite 20 inch bike tube
Sunlite tubes are a shop staple because they're reliable, fit right and don't cost much. Park and street riders grab the Standard tube to keep their bike light. Riders in thorn and goathead country, like here in Southern California, run the Thorn Resistant tube so a ride to the park doesn't end in a walk home. Parents pick the thorn tube for kids bikes because it means fewer flats to fix.
Fix your flat today. Pick your size and tube type and add it to your cart. Need tire levers or a pump too? Grab them below so you can do the install in one shot.
Click here for the easiest way to change your bicycle tube.
specs:
Sizes Available: 20 X 1.5" - 1.95", 20 X 2.0" - 2.25", 20 X 2.3" - 2.4"
Valve stem type: Schrader (Standard car tire valve)
Valve Length: 32mm
Rubber thickness: 0.9mm Standard, Thorn resistant 4.3mm
Valve core: Removable
Valve angle: 0
Problems with other tubes, and why this one fixes them
5 problems you'll run into with other bike tubes
- Thin no name tubes pop fast. Cheap tubes with thin, uneven rubber go flat from the first thorn, staple or piece of glass.
- The wrong size. A tube that's too narrow stretches thin and punctures easily. One that's too wide bunches up and gets pinched during install.
- Presta valves that don't fit your pump. Many tubes online use skinny Presta valves, which need a special pump head or adapter and sit loose in BMX rims drilled for Schrader valves.
- Goatheads and thorns. In thorn country, a standard tube can go flat every ride, and you end up walking home or patching your tube on the curb.
- Stuck valve cores. Tubes with fixed cores can't be serviced, so you can't add sealant or swap a leaky core. The whole tube has to go.
5 reasons the Sunlite 20 inch bike tube is better
- A trusted shop brand. Sunlite is a long running bike shop brand, with consistent butyl rubber that holds air.
- Three width ranges to fit right. 1.50–1.95", 2.0–2.25" and 2.3–2.40" cover kids bikes, classic BMX and modern wide BMX tires.
- Schrader valve, car tire style. It fits almost any floor pump, gas station air and BMX rims without an adapter.
- Thorn Resistant option with a 4.3mm wall. Nearly 5x thicker than the 0.9mm Standard tube, built for goatheads, thorns and rough streets.
- Removable valve core. You can add tire sealant or replace a leaky core instead of tossing the tube.
Flat prevention recommendations
Slime tire sealant
Tire liners
Rim strips
Tire Levers
Patch kit
Pump
Valve caps
Latex Tubes
How to DIY
Remove rear wheel
Remove front wheel
Remove tire
Install tube
Tube hacks
How to install rear wheel
Shipping: Shipping rate is based off of your orders weight, dimensions, and your location. More shipping info here.
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20 inch bike tube FAQ
What size 20 inch bike tube do I need? Look on the side of your tire for a size like 20 x 1.95 or 20 x 2.25. Pick the tube range your tire's width falls into: 1.50–1.95", 2.0–2.25" or 2.3–2.40".
Will this BMX inner tube fit my kid's bike? Yes, if the tire says 20" on the side. Most 20" kids bikes use 20 x 1.75 or 20 x 1.95 tires, so the 1.50–1.95" size fits.
What's the difference between the Standard and Thorn Resistant tube? The Standard tube has a 0.9mm wall and is light and cheap. The Thorn Resistant tube has a 4.3mm wall, nearly 5x thicker, so it resists goatheads, thorns and glass, but it weighs more.
Is a thorn resistant bike tube worth it? If you ride where goatheads, thorns or glass are common, or you're tired of fixing flats on a kids bike, yes. For park riding on clean concrete, the lighter Standard tube is usually enough.
What valve does this tube have? A Schrader valve, the same kind as a car tire, with a 32mm length. It works with almost any floor pump or gas station air hose.
Can I use a Schrader valve tube on any 20 inch BMX rim? Most BMX and kids bike rims are drilled for Schrader valves, so yes. If your rim has a small Presta hole, you'll need a Presta tube instead.
Can I put sealant in this bicycle inner tube? Yes. The valve core is removable, so you can add tire sealant like Slime for extra flat protection.
Can I use a 20 x 2.25 tube in a 20 x 2.4 tire? In a pinch it will hold air, but it stretches thin and flats more easily. For the best fit, use the 20 x 2.3–2.40" tube for a 2.4" tire.
How much air should I put in my 20 inch bike tube? Follow the PSI range printed on your tire's sidewall. Street riders run toward the high end for speed, park and dirt riders run lower for grip. Never go above the tire's max.
Why do I keep getting flats? Common causes are thorns or glass stuck in the tire, a worn out tire, a damaged rim strip, or low pressure causing pinch flats. Check the inside of the tire and the rim strip before installing a new tube, and consider the Thorn Resistant tube.