American Classic Krumbein 700x40 Black Tubeless Ready Folding Rubberforce G Stage 5S Armor 120TPI

The Krumbein is American Classic’s most aggressive gravel tire ideal for gravel roads, loose trails, and fast single track. The all-weather design includes tall side lugs for cornering grip on loose and rocky conditions, chamfered center knobs minimize rolling resistance, and there is plenty of space between knobs to prevent mud build-up. Combined with our signature Rubberforce G tread compounds and Stage 5S Armor construction, this tire provides impressive grip in the dirt and improves both ride quality and abrasion resistance compared to its predecessor. The Krumbein is available in Tubeless Ready construction with sidewall color choices of black, tan, and brown.