YUNSCM 2-PCS 24″ Mountain Bike Tires 24 x 2.125/57-507

Product Overview

The YUNSCM 24-inch mountain bike tires are engineered as high-performance folding replacement tires designed for compatibility with a wide range of 24-inch bicycles. Ideal for cyclists who demand reliable performance across diverse terrains, these tires combine durability, flexibility, and practicality in one package. Constructed from premium rubber reinforced with advanced nylon cord technology, each tire delivers strong grip and exceptional resistance to wear, making them suitable for both casual riders and those tackling light off-road trails. The included two tires make it easy to replace both wheels at once, ensuring balanced handling and consistent performance.

Key Features

• Ultra-durable construction: Crafted from high-quality rubber material enhanced with nylon cord reinforcement, these tires offer superior strength and resilience against punctures, cuts, and abrasion during regular use. This ensures long-lasting performance even under demanding conditions.
• Practical multi-functional tread design: Featuring an aggressive off-road appearance, the tread pattern provides excellent traction on loose or uneven surfaces like gravel and dirt trails, while maintaining smooth rolling efficiency on paved roads. This versatility allows seamless switching between urban commuting and trail riding without compromising performance.
• Folding capability with soft wire technology: Thanks to innovative new soft wire construction, these tires can be folded for compact storage or transport. Once unfolded, they naturally return to their standard shape and are ready for installation. Note that due to the nature of the soft wire, the outer tire may appear slightly bent upon arrival—this is normal and will resolve after gentle folding or rolling.
• Flexible inflation range: Designed to accommodate pressures between 35–65 P.S.I. (2.4–4.5 BAR), these tires allow riders to customize air pressure based on terrain, weight load, or personal comfort preferences, optimizing grip, cushioning, and rolling efficiency.

Technical Specifications

• Size: 24 x 2.125 inches (ISO equivalent: 57-507)
• Compatibility: Fits bikes with tire widths of 24×2.0, 24×2.10, 24×2.125, and 24×2.15 inches
• Material: High-grade rubber composite with integrated nylon cord reinforcement
• Inflation Pressure: 35–65 P.S.I. (245–450 kPa / 2.4–4.5 BAR)
• Quantity: 2 tires per package
• Tire Type: Folding (non-wire bead design)

Benefits & Use Cases

These YUNSCM 24-inch mountain bike tires are specifically designed for regular mountain biking applications, offering dependable performance across mixed-surface environments such as gravel paths, forest trails, and city streets. Their dual-purpose tread pattern delivers confident grip when navigating loose soil or wet roots, while still providing smooth, quiet rolling on asphalt for efficient daily commutes. The folding design adds significant convenience—especially valuable for riders who frequently travel with their bikes or need to store spares without taking up extra space.

One of the standout advantages is the broad compatibility with multiple 24-inch tire widths (up to 2.15 inches), meaning you don’t need to worry about whether your frame clearance or existing tubes will work with this size. Whether you’re upgrading an older hybrid bike, replacing worn-out OEM tires, or simply seeking a more durable option than budget alternatives, these tires provide a reliable solution. Adjusting inflation within the recommended range lets you fine-tune ride feel—higher pressure for speed on pavement, lower pressure for added comfort and traction on rough ground.

The inclusion of two tires ensures symmetrical performance front and rear, which is crucial for safe braking, cornering, and overall handling stability. Riders can confidently install them knowing they’re getting a matched set built to the same specifications for predictable behavior.

Important Notes & Installation Guidance

Upon receiving your tires, carefully inspect the steel wire portion around the tire lip. Check for any severe bending that doesn’t recover or signs of metal leakage—if present, contact the seller before installation. Also verify that your rim surface is free of sharp edges, burrs, or debris that could damage the inner tube or cause premature failure.

After installation, if an inner tube fails, re-examine the tire immediately. Look closely for broken cord fabric, damaged steel wire, or other visible defects. Remember: the soft wire structure means the tire may arrive slightly bent; this is not a defect but a characteristic of the folding design. To restore proper shape, gently fold or roll the tire according to its current state—avoid forcing it into an unnatural form.

Please note that this product is intended for standard recreational mountain biking use only. Damage resulting from extreme off-road riding, excessive overloading, racing, unauthorized modifications, or improper installation is not covered under warranty. For specialized requirements beyond typical trail or urban use, contact the seller via Amazon Messages prior to purchase to confirm suitability.

Always double-check tire dimensions and compatibility with your specific bike model before ordering to ensure a perfect fit.