CST Thumper

The Thumper is designed specifically for cross-country (XC) riding. Its tread pattern is optimized for speed on hardpack and loose-over-hard terrain, making it a strong choice for riders who prioritize efficiency and predictable handling on trail rides.

The tire features overlapping center knobs that create a continuous contact patch. This design significantly reduces rolling resistance, helping you maintain momentum and speed on flatter sections and climbs.

TPI stands for threads per inch. A 27 TPI casing uses thicker nylon threads, which makes the tire more robust and resistant to punctures and sidewall cuts compared to higher TPI, race-focused tires. It offers a reliable, durable feel that holds up well against trail debris.

This specific model is sized for 26-inch wheels with a 2.10-inch width. Please check your bike frame's clearance and your current wheel size before purchasing to ensure compatibility.

While the Thumper performs well on loose surfaces, its fast-rolling, tightly spaced knob design is not optimized for deep mud. It is best suited for dry to moderately damp trails where speed and efficiency are the primary goals.