AR-PRO 2.80/2.50-4 Inner Tubes (4-Pack) TR87 Bent Valve Stem, Heavy-Duty Rubber for Carts

AR-PRO’s 4-pack 2.80/2.50-4 inner tubes with TR87 bent valve stems replace worn or punctured tubes for 8.5" OD tires fitted to 4" rims on hand trucks, wheelbarrows, scooters, lawn mowers and dollies.

If you rely on small wheeled equipment for moving loads, yard work or personal transport, having a set of dependable replacement inner tubes saves time and hassle. These inner tubes are sized for tires commonly labeled 2.80-4 or 2.50-4, include a TR87 bent valve stem for easier inflation in tight wheel wells, and are built to withstand routine use across seasons. Sold in a four-pack to keep one on hand for immediate swaps, they’re designed for fast, tool-free changes so equipment downtime is minimal.

Will this inner tube fit my hand truck or wheelbarrow?

These tubes are intended for tires with an 8.5" outside diameter that mount on a 4" rim and are commonly marked 2.80-4 or 2.50-4. Confirm the tire designation on your current tire sidewall and rim width to ensure compatibility. The TR87 bent valve stem offers better access when rims or hub assemblies crowd a straight stem.

• Fits tires labeled 2.80-4 or 2.50-4 and 8.5" OD tires
• Compatible with 4" rim widths used on many utility carts and dollies
• TR87 bent valve stem for easier pump or compressor connection
• Four tubes included so you have spares for multiple wheels

How durable and safe are these inner tubes?

AR-PRO constructs these tubes from heavy-duty rubber compounds intended for frequent use and variable weather. The material composition resists typical punctures and holds air consistently; in the event of small punctures, rubber properties can help slow air loss until repair or replacement. Regular inspection and correct inflation pressure will extend service life.

• Thick-walled rubber for puncture resistance and longevity
• Stable performance across temperature changes and wet conditions
• Designed to maintain an airtight seal under normal loads
• Sold in a multi-pack to reduce downtime if a tube fails

How fast and easy is installation?

Replacing these tubes is straightforward and typically takes under five minutes for a single wheel when you have basic tools or a tire lever. The bent TR87 valve stem aligns with many wheel designs to make inflation quicker, and no specialized machinery is required for most home or job-site repairs. If you’re changing a scooter or mower tube for the first time, following a brief online tutorial will help.

• Quick swap process — often under five minutes per wheel
• TR87 valve stem simplifies access for inflating with a hand pump or compressor
• No specialty tools required for standard rim removal and tube seating
• Includes multiple tubes so you can replace more than one wheel at once

Which equipment and models commonly use this size?

This tube size is found on a variety of small-wheeled equipment: hand trucks, utility carts, lawn and garden mowers, wheelbarrows, platform dollies and some electric and kick scooters. It’s also compatible with certain youth scooters and specialty small tires used on pocket bikes or custom builds. Always cross-check the tire sidewall marking and rim diameter.

• Hand trucks, moving dollies and utility carts
• Wheelbarrows and backyard lawn mowers
• Some scooters including models like Razor E300 family and similar small-wheel scooters
• Replacement option for many 8.5" OD tires on 4" rims

Who this is for: Homeowners, landscapers, delivery crews and hobbyists who use small-wheeled equipment and want reliable spares will find this AR-PRO four-pack practical. It suits anyone who needs a fast, cost-effective way to replace worn or leaky inner tubes on 8.5" tires with 4" rims, wants a bent valve stem for easier inflation access, or prefers keeping extras available to minimize downtime during projects or transport tasks.