AR-PRO (2-Pack) 3.00-16 3.25/3.50-16 Inner Tubes for Dirt

These AR-PRO 3.00-16 / 3.25-3.50-16 inner tubes are heavy-duty butyl replacements designed to fit 16-inch off-road motorcycle tires and deliver improved air retention and durability.

If you ride motocross, trail, or pit bikes, using a reliable inner tube matters for handling and convenience. AR-PRO supplies a two-pack of thick butyl tubes sized to fit common 16-inch tire dimensions (including 3.25/3.50-16 and 90/100-16 ranges) and equipped with a TR4 straight valve stem. These tubes are built to resist punctures, maintain pressure, and simplify field repairs, so you can spend more time riding and less time fixing flats.

What tire sizes and bikes do these tubes fit?

These tubes are made to match a variety of 16-inch dirt bike and mini pit bike tires. They work with 3.25-16 and 3.50-16 tire widths as well as metric sizes like 90/90-16, 90/100-16, 100/80-16, and 100/90-16. Check your current tire sidewall to confirm compatibility before installation.

• Compatible widths: 3.00–3.50-16 and corresponding metric sizes
• Common bikes: 50cc–110cc pit bikes, older street-legal 16" wheel motorcycles
• Use as front or rear tube depending on tire size match

How does the butyl rubber construction improve performance on trails?

Butyl rubber offers better air retention than many natural rubber alternatives, which means fewer mid-ride pressure drops. The thicker compound also absorbs impacts and reduces pinch-flat risk when encountering rocks, roots, or edge impacts on uneven terrain.

• Thick butyl resists slow leaks and holds tire pressure longer
• Improved shock absorption smooths small vibrations and impacts
• Greater puncture and pinch-flat resistance on rough surfaces

What are the benefits of the TR4 straight valve stem?

The tubes use a TR4 straight valve stem with a rubber-coated base to secure a tight seal and reduce the chance of air loss at the stem. The valve design is straightforward for pump compatibility and prevents grit and debris from compromising the seal during off-road use.

• TR4 valve fits standard pumps and gauges without adapters
• Rubber-coated base prevents sand and dust infiltration
• Tear-resistant valve base reduces chance of valve failure

Why buy the 2-pack and what should I expect from installation?

The twin-pack includes two identical tubes so you can replace both front and rear or keep a spare for trail repairs. Installation follows the usual inner-tube mounting steps: partially inflate, insert, seat bead, then inflate to recommended pressure—inspect for pinch points and use soapy water to check for leaks.

• Two tubes for immediate replacement and a backup on long rides
• Simple installation—partial inflation, seat bead, finish to recommended PSI
• Inspect rim tape and tire interior to prevent repeated punctures

Who is this for: Riders who want dependable, budget-friendly replacement inner tubes for 16-inch dirt bike and pit bike wheels. The AR-PRO two-pack suits weekend trail riders, motocross hobbyists, and owners of small-displacement off-road motorcycles who need tubes with strong air retention, a durable valve, and better resistance to common trail hazards—without complicated upgrades or specialized tools.