AR-PRO (2-Pack) Universal 145/70-6 ATV Inner Tubes – Heavy Duty 450/530-6, 90cc ATV & Go-Kart

Overview

Meet AR-PRO with a practical, ready-to-use spare set: a 2-pack of universal inner tubes designed to cover multiple small-vehicle tires. These tubes are crafted to replace not only 145/70-6 tires but also several other common sizes, making maintenance more convenient for hobbyists and small shop setups.

The versatility extends to 450/530-6 sizes and 4.50-6, 5.30-6, and 5.30/4.50-6 tires. This flexibility helps you keep essential gear on the road, whether you are servicing an ATV, go-kart, lawn equipment, or light-duty wheeled tools.

Compatibility and Use Cases

• Universal fit reduces the number of spare tubes you need for mixed fleets of small tires.
• Ideal for common equipment such as 90cc four-wheelers, mini choppers, go-karts, hand trucks, dollies, wagons, and lawn care machines.

Durability and Performance

• Thicker construction provides self-sealing properties that help form airtight seals around puncture holes, aiming to minimize sudden deflation.
• Made with a butyl rubber compound, these tubes offer enhanced elastic damping, which can complement vehicle suspension for a steadier ride on uneven surfaces.

Valve Details and Fitment

The TR13 straight valve stem is rubber-covered and rated up to 60 psi. It features roughly a 1.5-inch offset from the tube center, a 1.38-inch stem length, and about 0.453 inch width, designed to fit most 1/2-inch rim holes; adapters like B6 rim bushings expand compatibility for larger rims.

Real-World Benefits

Riders may experience a more comfortable ride thanks to improved damping, especially on rough terrain. The self-sealing design helps maintain air pressure between checks, while the 2-pack format offers value for seasonal or shared equipment kits.

Tips for Use

• Check tire size compatibility before purchase to ensure a proper fit with your wheels.
• Follow correct mounting procedures to avoid pinch flats during installation.