MITAS 70001348 Standard Duty Motorcycle Dirtbike Inner Tube 2.50-18 / 2.25-18 - 18" - TR-4 - Center Metal Valve

OVERVIEW

The MITAS 70001348 Standard Duty inner tube provides reliable air retention and sidewall reinforcement for 18-inch motorcycle and dirt bike wheels. Built with a precise 1.5 mm rubber wall thickness and a TR-4 center valve system, this replacement tube is engineered for consistent pressure holding and puncture resistance across daily commuting and trail riding. It is manufactured specifically for standard motorcycles, scooters, and mopeds requiring a lightweight yet durable tubewall interface.

ENGINEERING & PERFORMANCE

The galvanized TR-4 valve stem maintains a tight mechanical seal against steel and alloy rims while resisting corrosion from moisture and road salts. A standardized 1.5 mm standard-duty wall profile distributes impact forces evenly, reducing pinch-flat frequency without adding rotational mass. Each unit ships pre-sealed in nitrogen-filled individual pouches, preserving the latex compound’s elasticity and preventing premature dry rot before installation.

KEY FEATURES

• Replacement inner tube sized for 2.50-18 / 2.25-18 tire assemblies
• Center-mounted TR-4 metal valve for quick inflator attachment and leak prevention
• Premium galvanized valve stem construction rated for long-term rim exposure
• Includes two installation washers plus matching metal and rubber dust caps
• 1.5 mm wall thickness delivers balanced flexibility and tread support
• Nitrogen-rich atmospheric packaging extends manufacturer shelf life and preserves rubber integrity

TECHNICAL SPECIFICATIONS

• Brand: MITAS
• Part Name: 70001348 Standard Duty Motorcycle Dirtbike Inner Tube
• Product Type: Inner Tube
• Wall Thickness: 1.5 mm (Standard Duty)
• Tire Compatibility: 2.50-18 / 2.25-18
• Rim Diameter: 18 inches
• Valve Configuration: TR-4 Center Metal Valve
• Application Category: Motorcycles, Scooters, Mopeds

FITMENT

• 2.50-18 / 2.25-18 tire size compatibility
• 18-inch rim diameter wheel applications
• Motorcycles, scooters, and mopeds utilizing TR-4 center-type valves

WHY RIDERS CHOOSE THIS

Motorsport enthusiasts and daily commuters reach for this MITAS tube when they need a straightforward replacement that installs cleanly and holds steady pressure under normal load. The galvanized TR-4 valve stem aligns easily with standard portable inflators, while the dual washer and dual-cap kit ensures a sealed valve core against water and debris intrusion. Paired with the measured 1.5 mm standard-duty wall thickness and nitrogen-sealed storage, this product delivers predictable handling and long-term reliability without the weight penalty of heavy-duty racing constructions.