Maxxis Tube 2.75/3.00-21 TR4 (XCS)

Meet the Maxxis Tube 2.75/3.00-21 TR4 (XCS) — a purpose-built front inner tube designed to keep your dirt bike rolling smoothly on demanding 21-inch front wheels. When every ride could throw rocks, ruts, and sand at you, this tube stays seated, seals consistently, and stands up to the rigors of off-road terrain.

Why riders reach for TR4 (XCS) tubes is simple: they’re tuned for front-end stability and reliable air retention on rough trails. The 2.75/3.00-21 sizing is a common fit for many 21-inch front tires, and the TR4 (XCS) construction prioritizes consistent bead seating and durable performance under the demands of motocross, enduro, and trail riding. With this tube, you’ll experience steadier steering, fewer burps of air when you hit uneven sections, and improved overall ride feel when the going gets rocky.

Key benefits at a glance:

• Optimized for 21-inch front wheels with 2.75/3.00-21 tires, offering a reliable, universal fit for many dirt bikes.
• TR4 (XCS) design blends rugged durability with flexible performance to handle aggressive cornering and rough sections without losing air.
• Enhanced bead seating and inflation stability reduce pinch flats and setup time during tire changes or track sessions.
• Built to endure off-road abuse — resistant to punctures and designed for repeated, hard riding on trail, enduro, and motocross courses.
• Easy installation and routine maintenance make it a practical, dependable choice for riders who want fewer interruptions on race day or weekend rides.

Who should consider this tube? Ideal for riders who crave confident handling on challenging terrain and want a front-tire inner tube that contributes to steady steering and reliable performance across varied surfaces. It’s a smart upgrade for enduro riders, motocross enthusiasts, and dual-sport riders who regularly ride in rocky, sandy, or muddy conditions where tire setup matters as much as tire choice.

Practical setup tips: ensure the tire bead sits evenly during installation, inflate slowly to the recommended pressure after seating, and check for any bead or valve issues before a ride. With the Maxxis Tube 2.75/3.00-21 TR4 (XCS), you gain dependable stability on the front end, helping you ride with more control and less worry on harsh terrains.

What you get: 1 Maxxis Tube 2.75/3.00-21 TR4 (XCS) inner tube designed for front applications on compatible 21" tires.