MITAS 70001346 Standard Duty Motorcycle Dirtbike Inner Tube TR-6 Center Metal Valve 90/100-18 / 110/80-18 / 4.10-18 / 120/100-18 / 3.50-18 / 100/80-18 / 110/100-18 / 110/90-18 / 120/80-18 / 100/100-18 / 130/80-18 / 3.25-18 /

OVERVIEW

The MITAS 70001346 is a standard duty inner tube built specifically for 18-inch motorcycle, dirt bike, scooter, and moped wheels. Constructed from a 1.5 mm thick rubber casing, this tube delivers steady air retention and consistent pressure support for daily street riding and light off-road use. Each unit ships sealed in an individual pouch filled with a nitrogen-rich atmosphere to prevent premature moisture buildup and extend shelf life.

ENGINEERING & PERFORMANCE

This inner tube maintains stable operating pressure through a precision-extruded rubber compound engineered to resist deformation under normal load conditions. The integrated TR-6 center valve assembly utilizes a galvanized steel stem that resists corrosion while anchoring securely against the rim hole. Dual mounting washers clamp the valve base evenly, distributing mechanical stress and minimizing the risk of valve base fatigue or slow leaks during repeated inflation cycles.

KEY FEATURES

• Standard duty (SD) 1.5 mm thick rubber construction
• TR-6 center-mounted galvanized steel valve stem
• Included dual sealing washers with metal and rubber valve caps
• Nitrogen-enriched individual pouch packaging for storage stability
• Designed for 18-inch wheels on motorcycles, dirt bikes, scooters, and mopeds
• Optimized air volume sizing to match common 18" tire profiles

TECHNICAL SPECIFICATIONS

• Brand: MITAS
• Part Name: Standard Duty Inner Tube TR-6 Center Metal Valve
• Product Type: Inner tube
• Material: Natural rubber with galvanized steel valve stem
• Valve Wall Thickness: 1.5 mm (Standard Duty)
• Supported Applications: Multiple motorcycle, dirt bike, scooter, and moped models with 18-inch wheel assemblies
• Compatible Tires: 90/100-18, 110/80-18, 4.10-18, 120/100-18, 3.50-18, 100/80-18, 110/100-18, 110/90-18, 120/80-18, 100/100-18, 130/80-18, 3.25-18, 4.00-18, 90/90-18, 100/90-18, 120/90-18

FITMENT

• 18-inch motorcycle, dirt bike, scooter, and moped wheels
• Mitsubishi Zephyr (1991–2024)
• Suzuki DR-Z400E (2003–2023)
• Yamaha WR450F (2003–2023)

WHY RIDERS CHOOSE THIS

Riders select this MITAS inner tube when they need reliable baseline performance without paying for heavy-duty reinforcement or advanced tread compounds. The 1.5 mm standard duty rubber strikes a practical balance between impact resistance and predictable handling, making it ideal for commuters and weekend trail riders who prioritize consistency over extreme durability. The galvanized valve stem and included hardware simplify installation while reducing the common failure points associated with cheaper aftermarket tubes. Paired with correctly sized 18-inch tires, this tube delivers steady pressure holding and straightforward replacements for owners who ride regularly and want dependable service between major maintenance intervals.