HIAORS Inner Tubes 9x3.50-4 (2.50/2.80-4) 2-Pack with Bent Metal Valve Stems for Hand Trucks & Scooters

HIAORS 9x3.50-4 inner tubes (2-pack) are replacement 2.50/2.80-4 rubber tubes with bent metal valve stems designed to fit hand trucks, lawn mowers, wheelbarrows, Razor E300 scooters and similar 9 x 3.50-4 tires.

These inner tubes are an aftermarket, ready-to-install option when a flat or damaged tube keeps you off the yard, jobsite or trail. Each kit contains two 2.50/2.80-4 tubes molded for a 9 x 3.50-4 tire, equipped with bent metal Schrader-style valve stems and screw-on plastic caps for straightforward inflation and protection from debris.

Will these inner tubes fit my wheel or tire size?

They are sized to fit 9 x 3.50-4 tires and are labeled 2.50/2.80-4, which matches many small utility and scooter wheel applications. Measure your tire sidewall or existing tube to confirm the 4-inch rim diameter and 9-inch tire diameter before purchase.

• Compatible with 9 x 3.50-4 tires and rims.
• Marked 2.50/2.80-4 to match common small-wheel sizes.
• Check rim diameter and tire sidewall for confirmation.

How does the bent metal valve stem help when installing or inflating?

The pre-bent metal valve stem provides easier access in tight wheel wells and with deep rims, making inflation quicker without forcing the tube into awkward angles. The metal stem is durable and paired with a screw-on plastic cap to keep dirt out and protect the valve core.

• Bent angle improves pump access in recessed rims.
• Metal stem offers sturdier threading than thin rubber stems.
• Includes plastic cap to shield the valve from debris and damage.

Are these inner tubes durable and easy to install?

Made from standard inner-tube rubber compound, these tubes balance flexibility with wear resistance for typical light-duty vehicles and garden equipment. Installation requires removing the wheel, levering out the tire, placing the tube, and reinflating to the manufacturer’s recommended pressure.

• Standard rubber compound for general-purpose use.
• Supplied as a pair so you can replace both sides at once if needed.
• Installation steps: remove wheel, seat tire bead, insert tube, inflate gradually.

What’s included and any precautions before buying?

The package contains two inner tubes sized for 9 x 3.50-4 tires, each with a bent metal valve stem and plastic screw cap. Always verify the tire and rim size, inspect for sharp objects in the tire/tire well, and ensure the replacement tube matches your wheel’s valve orientation and required pressure range.

• Package: 2 x 9x3.50-4 (2.50/2.80-4) inner tubes.
• Each tube has a bent metal valve stem with a protective screw cap.
• Confirm size and remove debris or sharp objects before installation.

Who is this for: These HIAORS inner tubes suit owners of hand trucks, utility carts, lawn mowers, wheelbarrows, dollies, go-karts, small ATVs, and scooters (including models like the Razor E300) who need a direct-fit, economical replacement. They’re ideal for DIYers, landscapers, fleet managers, and hobbyists who want a simple, durable tube replacement with an accessible bent valve stem for easier inflation in restricted wheel spaces.