Mitas Tire
Description
Keep your 12-inch wheels rolling with confidence using the Mitas 4.00/4.50-12 Inner Tube. Molded from high-density butyl rubber and engineered in Europe to rigorous performance standards, this heavy-duty tube resists seam splits, pinch flats, and thermal breakdown — delivering exceptional pressure retention under prolonged loads. An ideal replacement for wide 12-inch fat-tire scooters, mini-motos, and sidecars.
Key Features
- Premium Butyl Rubber: Uniform wall thickness and high elasticity reduce natural air migration and resist ozone degradation over time.
- 90° Bent Metal Valve Stem: Pre-angled JS87/DIN7777-style metal valve provides easy inflation access on tight 12-inch wheel hubs and split rims.
- Reinforced Valve Base: Extra-thick vulcanized rubber pad absorbs rotational stress and prevents pull-shear flats at the stem.
- Thermal Stability: Withstands high internal rim temperatures generated during prolonged braking on smaller wheel platforms.
Technical Specifications
- Rim Diameter: 12 inch
- Supported Tire Widths: 4.00" to 4.50"
- Valve Stem Type: 90° Bent Metal (JS87 / DIN7777)
- Material: High-density butyl rubber
- SKU: 136-138
Size & Fitment Guide
| Imperial Size | Metric Equivalents | Application |
|---|---|---|
| 4.00-12 / 4.00x12 | 110/90-12, 120/70-12 | Standard 12" scooter front/rear rims |
| 4.25-12 / 4.25x12 | 120/80-12, 130/60-12 | Mid-profile urban commuters |
| 4.50-12 / 4.50x12 | 130/70-12, 130/80-12, 140/70-12 | Fat-tire variants and custom mini-bike setups |
Installation Tips
- Always inspect the inside of your tire carcass for sharp debris, wire remnants, or burrs before inserting the new tube.
- Dust the inside of the tire casing with talcum powder before sliding the tube in — this prevents rubber-to-fabric sticking and reduces the risk of pinch flats.
About Mitas
Mitas is a leading European tire manufacturer with decades of experience producing high-quality tires and tubes for motorcycles, scooters, and specialty vehicles. Their products are engineered to meet strict European performance and safety standards, making them a trusted choice for riders worldwide.
Product Diagrams
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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