Maxxis Tube 3.50/4.00-08 JS87C (XCS)

Maxxis Tube 3.50/4.00-08 JS87C (XCS) is a purpose-built inner tube designed for 8-inch wheels and tires sized 3.50/4.00-8. It’s crafted for riders and hobbyists who demand quick, dependable puncture protection and a reliable seal with every ride.

Precise fit for 3.50/4.00-8 tubed tires

This tube hugs the bead profile of compatible Maxxis tires to minimize risk of pinch flats and slow leaks. The result is a stable, predictable ride with fewer saddle-time interruptions from flats or air loss.

Rugged, reliable construction

Built from a durable butyl compound, the JS87C (XCS) inner tube is designed to hold air consistently across a range of temperatures and riding conditions. It’s resistant to small punctures and pinholes, helping you stay on the road or track longer between repairs.

Easy inflation with a sturdy valve

Equipped with a robust valve stem for straightforward inflation using standard pumps, this tube supports quick servicing in the garage or on the go. A reliable valve minimizes air leakage and makes topping up pressure simple when you’re away from home.

Versatile use for small-wheeled machines

Ideal for a variety of 8-inch wheeled setups—ranging from compact motorcycles and scooters to minibikes and light utility equipment that run on 3.50/4.00-8 tires. If you rely on tubed tires in this size, this Maxxis inner tube provides a dependable replacement option that maintains tire performance and ride feel.

What makes this tube stand out

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  Exact sizing: engineered for 3.50/4.00-8 tires to ensure a snug, even seal around the bead.
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  Butyl formulation: optimized for air retention and resilience against common road hazards.
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  Durable valve: designed for easy inflation with standard equipment and fewer leaks at the valve stem.
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  Quality you can trust: Maxxis’ manufacturing standards translate into consistent thickness, uniformity, and reliable performance across units.

Practical tips for best results

• Pair this inner tube with compatible 3.50/4.00-8 tires for a balanced setup that preserves handling and ride comfort.
• Check tire and tube integrity before long rides—look for signs of wear, cracks, or slow leaks around the valve stem.
• Inflate to the tire manufacturer’s recommended pressure when cold, and recheck after a short ride to account for heat buildup.
• Have a basic repair kit on hand for on-the-road punctures to minimize downtime.

Whether you’re maintaining a daily commuter scooter, restoring a mini bike, or outfitting a small utility machine, the Maxxis Tube 3.50/4.00-08 JS87C (XCS) delivers a dependable, purpose-built solution. It’s more than a spare part—it’s a practical upgrade that helps you keep moving with confidence.