Maxxis Tube 4.50/4.75-18 TR4 (XCS)

The Maxxis Tube 4.50/4.75-18 TR4 (XCS) is a purpose-built 18-inch inner tube designed to pair seamlessly with a wide range of tires in the 4.50/4.75-18 size. Built for riders who demand dependable air retention, consistent performance, and a fit that doesn’t disappoint, this tube helps your motorcycle ride smoother, longer.

• Precisely matched to 4.50/4.75-18 tires: A reliable, consistent fit on classic and modern 18-inch wheels, reducing installation hassles and minimizing the chance of pinched or out-of-round tubes.
• Premium butyl rubber formulation: Low air permeability so you spend less time reinflating and more time on the road, with steady pressure throughout your ride.
• TR4 (XCS) construction: Engineered for stable chamber shape and even air distribution, helping resist leaks and maintain tire integrity under normal street and light off-road conditions.
• Reinforced valve-stem area: Durable connection point designed to withstand road impacts and daily riding vibrations without tearing or leaking.
• Versatile performance: Ideal for daily commuting, weekend canyon carving, or light-duty off-road sessions on bikes equipped with 18" wheels and tube-type tires.
• Reliable replacement option: A trusted upgrade for worn or aging inner tubes, restoring peak handling, grip, and ride quality without changing your tire setup.

Who is this tube for? Riders with classic or contemporary motorcycles that run 18-inch rims and require a dependable inner tube that won’t surprise them at the side of the road. It’s also a smart choice for riders upgrading older setups to newer, more consistent tubes that maintain pressure longer and resist punctures under normal riding conditions.

Compared to generic alternatives, the Maxxis TR4 (XCS) tube emphasizes a more stable fit, durable build, and better air retention—translating to fewer interruptions for tire maintenance and more predictable handling. Pair it with compatible 18" tires and your preferred rim, and you’ll appreciate the dependable seal, straightforward installation, and the peace of mind that comes with a quality Maxxis product.

Pro tips for optimal results: inspect rims and rim tapes for damage before installation, ensure a clean seating surface, and inflate gradually to avoid pinching during mounting. With the Maxxis Tube 4.50/4.75-18 TR4 (XCS), you’re choosing a proven, purpose-built solution designed to keep your ride confident and consistent mile after mile.