Tubes
Tubes: the part that holds air inside a tube-type tire
A tube is the sealed rubber bladder that sits between the tire and the wheel, holding the air on a rim that is not set up to seal a tire on its own. When you fit a new tube, you slot it inside the tire, mount both to the rim, and inflate through the valve stem that pokes through the rim's valve hole. The tube itself is what carries the pressure, so it is a wear-and-tear item you replace when it fails, when you change a tire, or when you want a heavier-wall version that shrugs off pinch flats better. Getting the right size and the right valve type is the whole job.
What ThreePiece stocks in tubes
There are 98 tubes in this category, from 3 brands: Bike Master makes up the bulk of the range at 75 listings, with TwinPower at 17 and ProTaper at 6. Current in-stock pricing runs from $7 to $57, which is the live range for what is on the shelf right now rather than a fixed promise.
The range covers a spread of sizes and valve styles. On the heavier end you'll find the ProTaper Heavy Duty Tube 120/100-18 and the ProTaper Heavy Duty Tube 120/80-19, plus the BikeMaster 120/90-19 TR6 Extra Heavy Duty and the BikeMaster 120/100-18 TR6 Extra Heavy Duty. If you need a metal center valve, the TwinPower 200/55-R17 TR6 and the TwinPower 180/65-16 TR4 show that end of the range.
How to choose a tube
Three things decide it. First, size: match the tube to your tire's dimension so it isn't overstretched or bunched up. Second, valve type: the listings above call out TR4 and TR6 stems, and the stem has to line up with the angle and shape of the valve hole in your rim. Third, wall thickness: standard tubes are lighter and cheaper, while the heavy-duty and extra-heavy-duty options like the ProTaper and BikeMaster listings trade weight for more resistance to punctures and pinching. If you're spending most of your budget at the top of the $7-$57 range, that's usually the heavier-wall protection you're paying for.
What else you need with it
Buying a tube usually means you're already in a tire. Browse Tires if the casing is due for replacement, or check mounted packages if you'd rather have wheel and tire arrive together. This category sits under Wheel Accessories, alongside sibling categories like Lug Nuts, Lug Bolts, Wheel Spacers and Center Caps for the rest of the hardware around your wheels.
Fitment help and ordering
Not sure which size or valve you need? Run your setup through the wheel fitment calculator or call fitment help at 813-535-5801. Every order ships free, and Affirm and Katapult financing is available at checkout.