AMERICAN CLASSIC Gravel Bike Tire, Replacement Tire for

Product Overview

The American Classic Kimberlite gravel bike tire is engineered for riders who demand speed without sacrificing control on mixed terrain. Designed as a high-performance replacement tire, it bridges the gap between road efficiency and off-road grip, making it ideal for everything from daily commutes to long-distance gravel adventures. Whether you’re riding hardpack, loose dirt, or variable surfaces, the Kimberlite delivers consistent performance with minimal compromise.

At its core is a tread pattern that prioritizes rolling efficiency while maintaining confident handling in unpredictable conditions. The smooth center tread reduces resistance over long distances, helping you maintain momentum on packed roads and firm trails. Meanwhile, progressive lateral transitions and robust side knobs ensure predictable cornering when shifting to rougher or looser ground. This balanced design means you don’t have to choose between speed and stability—you get both.

Built with advanced materials and modern construction techniques, the Kimberlite supports tubeless setups and sealant use, offering improved puncture protection and lower rolling resistance. Its lightweight yet durable build keeps overall bike weight down while enhancing comfort on rough surfaces. For riders seeking a reliable, all-weather tire that performs consistently across changing landscapes, the Kimberlite stands out as a versatile choice.

Key Features

• Fast Rolling Center Tread: Engineered for reduced friction and efficient energy transfer, the smooth center section minimizes rolling resistance, enabling faster speeds on hardpack and paved shoulders.
• Progressive Transitional Zones: Gradual shifts in knob height and spacing provide seamless transition from straight-line speed to responsive cornering, improving handling on mixed-surface turns.
• Durable Side Knobs: Aggressive lateral blocks deliver secure traction during cornering on loose, wet, or uneven terrain, reducing the risk of sliding out in challenging conditions.
• Stage 5S Armor Protection: Features Nylon116 bead-to-bead reinforcement that increases cut and abrasion resistance without adding significant weight, supporting longer rides with greater durability.
• RubberForce G Compound: A custom-tuned rubber blend optimized for consistent grip across a wide range of temperatures and surfaces—from dry hardpack to damp, gritty gravel.
• Tubeless Ready Construction: Compatible with tubeless tires and sealants, allowing for lower pressure setups that improve traction, comfort, and pinch-flat resistance.

Technical Specifications

• Model: Kimberlite
• Brand: American Classic
• Available Sizes: 700 x 35c, 700 x 40c, 700 x 45c, 700 x 50c, 650b x 47
• Selected Variant: 700 x 40c – Tan – Tubeless Ready
• Bead Technology: Stage 5S Armor (Nylon116 bead-to-bead)
• Compound: RubberForce G
• Compatibility: Tubeless Ready

Benefits & Use Cases

The Kimberlite shines in environments where surface conditions change frequently—perfect for multi-use gravel routes, backroad explorers, and riders who switch between pavement and dirt. On firm, packed surfaces, its fast-rolling center tread keeps your momentum steady, whether you’re commuting through suburban streets or covering miles on smooth doubletrack. The absence of deep knobs prevents excessive drag, ensuring you don’t sacrifice speed for versatility.

When you encounter looser gravel, light mud, or technical sections, the tire’s progressive side knobs engage quickly to provide confidence-inspiring grip. This makes it especially valuable during descents or tight turns on uneven terrain, where predictable handling can mean the difference between control and loss of traction.

Running the tire tubeless allows you to run lower pressures than traditional clinchers, which enhances contact patch size and absorbs vibrations from rough roads. Combined with sealant, this setup significantly reduces the chance of pinch flats caused by impacts or potholes—common hazards on remote rides or poorly maintained paths. The result is a smoother ride, better control, and greater peace of mind during extended adventures.

The 700 x 40c size offers an excellent balance between clearance and performance. It fits comfortably on most modern gravel frames and provides enough volume to handle minor obstacles like roots or ruts without feeling sluggish. This makes it suitable for everything from urban exploration to weekend touring, where adaptability across varied conditions is key.

Whether you’re navigating a twisty forest trail one day and a long, fast stretch of open gravel the next, the Kimberlite adapts seamlessly. Its dependable performance across diverse environments ensures you can focus on the ride rather than worrying about tire limitations.

Important Notes

This product is sold as a single tire only—no inner tube, rim strips, or sealant are included. To take full advantage of the tubeless-ready design, ensure your rims are compatible with tubeless setups and follow proper installation procedures. Using compatible sealant will enhance puncture protection and help maintain optimal tire performance.

Before purchasing, always verify that your bicycle’s frame and fork have sufficient clearance for the chosen tire width. Exceeding clearance limits can compromise safety and damage components. Additionally, wear patterns and tread life will vary depending on riding style, terrain type, rider weight, and inflation pressure. Regular inspection of the tire surface and sidewall integrity is recommended to maintain safety and performance over time.