Avon Heavy Duty Tubes
Heavy Duty inner tubes from Avon, fit by tire size.
3 fitments · 3 wheel sizes · 3 in stock — from $16. Order online or install at MTC Orange County.
The Avon Heavy Duty Tubes line covers 3 wheel sizes (18″–21″) across 3 fitments — for dual-sports, adventure bikes, and vintage iron, adventure and dirt bike fronts. Thick-wall heavy-duty construction that resists pinch flats under load and at the low pressures off-road riding demands.
Find your fitment by the size printed on your tire sidewall (for example, a 90/100-18), pick the matching tube, and order it shipped or install it at MTC. Spoked wheels need a tube; if you're unsure, we'll confirm the right one.
Valve stems in this family: TR4. The stem has to clear your wheel, so match the code on the fitment you pick.
Valve stems in this family: TR4. The stem type must clear your wheel — match the code above, or call (714) 516-9059 and we’ll confirm it.
11 fitments · 10″–19″
11 fitments · 10″–19″
47 fitments · 8″–23″
47 fitments · 8″–23″
21 fitments · 10″–21″
21 fitments · 10″–21″
20 fitments · 16″–21″
20 fitments · 16″–21″
Do I need a heavy-duty tube?
If you air down for dirt, carry a passenger or gear, or run a heavy bike, yes — the thicker wall resists pinch flats and heat that thin tubes suffer under load. For street-only riding, a standard tube is fine.
How do I know which valve stem I need?
This family ships with TR4 stems, and the exact code is listed against every fitment in the table above. The stem must line up with the hole in your rim and clear the brake/sprocket side, so match the code on the tube to the one that came out of your wheel — or bring the wheel in and we'll check it.
Which tire sizes does one of these tubes cover?
Each row in the table above lists the manufacturer's own fitment range verbatim — many tubes cover several tire sizes on the same wheel diameter (for example a 3.25/4.10 tube fits both of those widths on its rim). Pick the row whose range includes the size printed on your sidewall.
Does MTC install Avon tubes?
Yes — we mount and balance your tire and tube in-shop, or ship the tube to your door. Call (714) 516-9059 with your tire size and we'll pull the exact Avon tube.