GDHSWJ 3.00-12 (80/100-12) Dirt Bike Inner Tubes 2-Pack TR4 Valve, 2mm Heavy-Duty Rubber

These GDHSWJ 3.00-12 (80/100-12) inner tubes are heavy-duty, 2mm natural rubber replacement tubes with TR4 straight valves designed for 12" dirt bike tires 3.0"–3.5" wide.

Built from robust natural rubber and reinforced at critical seams, this 2-pack of GDHSWJ inner tubes gives your off-road bike reliable airtightness and improved puncture resistance. They suit common small-displacement trail bikes and pit bikes with 12" wheels, featuring a TR4 straight valve stem and a reinforced thickness to handle rough terrain and frequent use.

Which motorcycles and tire sizes are these inner tubes compatible with?

These tubes fit a broad range of 12" wheel applications for youth and small trail bikes. They are sized for 3.00-12 (sometimes listed as 80/100-12) tires and cover widths from about 3.0" to 3.5".

• Covers many 90/110/125cc models such as Kawasaki KLX110 (rear), Yamaha PW80, Honda CRF50 and XR70.
• Compatible with Yamaha TTR90/TTR100, Suzuki DRZ100 and similar pit bikes.
• Also fits popular TAOTAO and other off-road mini bikes using 12" tires.

How durable and puncture-resistant are these tubes?

GDHSWJ designed these tubes with a 2mm heavy-duty wall and a seamless construction to improve longevity and resistance to punctures. The reinforced welds and thicker rubber absorb impacts and help maintain pressure under off-road conditions.

• 2mm thick natural rubber body for extra wear resistance.
• Seamless structure and firm welds reduce weak points.
• TR4 valve stem built for airtight performance and fewer leaks.

What installation and maintenance tips should I follow?

Install with care to avoid pinching and check tire seating before full inflation. Use a light coat of soapy water to check for leaks and inspect the rim and tire for sharp edges or debris prior to fitting the tube.

• Partially inflate tube for easier mounting and to prevent pinching.
• Inspect rim tape and remove any foreign objects before installation.
• Check valve alignment and torque, then inflate to the manufacturer’s recommended pressure.

What after-sales support and warranty can I expect?

GDHSWJ offers customer service for questions or concerns after purchase. If you experience a defect or need guidance, contact the seller by email for prompt assistance to resolve fitment or quality issues.

• Manufacturer-provided support via email for product questions.
• Guidance on fitment and troubleshooting included.
• Replacement or assistance offered for verified product issues.

Who is this for: Riders, mechanics, and shops that service youth and small-displacement trail bikes will appreciate this GDHSWJ 2-pack for routine tire service and quick replacements. It’s a practical choice for owners of 90–125cc machines, pit bikes, and mini-moto riders who need a durable, easy-to-fit inner tube with a straight TR4 valve for 12" tires.