StaiBC 2.75/3.00-16 Heavy-Duty Inner Tubes 2-Pack — TR4 Straight Valve, Thick Butyl for 16" Dirt Bike/ATV

StaiBC 2.75/3.00-16 inner tubes are heavy-duty butyl replacements with TR4 straight valve stems designed for 16" dirt bike and ATV tires, sold as a 2-pack.

If you need dependable spare tubes for off-road riding or pit-bike maintenance, these StaiBC inner tubes are built for rugged use. Constructed from thick butyl rubber, they resist ozone cracking and dry rot while offering a secure seal around punctures. The included TR4 straight valve stems have full-length threading and locking nuts for reliable, low-psi performance on 16-inch tires that measure 2.75 to 3.00 inches wide.

Will these tubes fit my dirt bike or pit bike tire?

These tubes are sized to fit common 16-inch dirt bike tires and a range of width ratings. They work with sizes listed as 2.75/3.00-16 and equivalent markings like 80/100-16 and 80/90-16, covering many 125cc and smaller four-stroke pit bikes.

• Compatible with 2.75–3.00 inch tire widths on 16" rims
• Fits 80/100-16, 80/90-16, 90/90-16 and similar markings
• Commonly used on XR75, CRF80F, small-displacement off-road bikes and ATVs

How durable are these inner tubes for off-road use?

StaiBC uses butyl rubber formulated for longevity and resistance to environmental aging. The walls are thicker than economy tubes, which improves puncture resistance and helps the material self-seal small holes, reducing the chance of sudden deflation.

• Butyl construction resists ozone cracking and dry rot
• Thicker walls provide extra protection from trail hazards
• Self-sealing properties help maintain pressure after minor punctures

What makes the TR4 straight valve stem suited to low psi riding?

The TR4 straight valve stem features continuous threading along its length so a nut and washer can be secured tightly to the rim. That locking arrangement prevents the stem from shifting under torque and helps maintain airtight performance at lower pressures typical of off-road setups.

• Full-length threads accept locking nut and washer
• Secure mounting reduces valve movement during rough rides
• Designed for high-torque, low-psi off-road conditions

What do I get in the box and how should I store spare tubes?

Each purchase contains two StaiBC inner tubes sized 2.75/3.00-16 with TR4 valve stems—enough for immediate replacement and a spare for future rides. Store new tubes in a cool, dry place away from direct sunlight and ozone sources (generators, electric motors) to preserve the butyl rubber.

• Pack includes two high-quality inner tubes with TR4 valves
• Keep in cool, dark storage to prevent premature aging
• Check tube condition before installation and use appropriate tire levers and lubrication

Who is this for: These StaiBC inner tubes are aimed at dirt-bike and ATV riders, pit-bike owners, and mechanics who need reliable, heavy-duty replacements for 16" tires in the 2.75–3.00" width range. They suit riders who favor low-pressure setups for improved traction and those who want tougher butyl construction with secure TR4 valve mounting for off-road use.