Challenge Gravel Grinder Pro Tire - 700 x 40 Tubeless Folding Black Handmade. Intended for all around or dirt/gravel roads this tire comes equipped with a file tread center and a knobbier shoulder tread.File tread center pattern offers low rolling resistan
Challenge Gravel Grinder Pro Tire – 700 x 40 Tubeless Folding Black Handmade. Intended for all around or dirt/gravel roads this tire comes equipped with a file tread center and a knobbier shoulder tread.
| Color | Black |
| Defined Color | Black |
| Flat Protection | Tread and Sidewall |
| ISO Diameter | 622 / Road / 29″ |
| ISO Width (mm) | 40 |
| Labeled Size | 700 x 40 |
| TPI | 260 |
| Tire Bead | Folding |
| Tire Diameter | 700c |
| Tire Intended Use | Gravel |
| Tire Type | Tubeless Ready Clincher |
| Weight | 460 |
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