Grinder Pro

Description |

The Challenge Gravel Grinder Pro in 700x40C is built for riders who want speed on hardpack without giving up bite when the gravel gets loose. Handmade with a SuperPoly 300TPI casing and the SmartPlus puncture protection layer this tire rolls fast feels supple and stays reliable on long mixed terrain days.

The center file tread keeps momentum high while the more aggressive shoulder knobs hold tight in corners and unpredictable washboard. The tubeless ready construction adds stability and lower pressure comfort making it ideal for endurance gravel rides adventure loops and race days where smoothness and grip matter most.

Finished with a classic tanwall and Challenge’s signature handmade feel this is a tire that turns rough roads into fast fun.

Features |

• Handmade SuperPoly 300TPI casing for a fast and supple ride
• SmartPlus protection layer for improved cut and puncture resistance
• File tread center with grippy shoulders for hardpack and loose gravel
• Tubeless Ready construction for lower pressures and extra comfort
• 700x40C size ideal for modern gravel clearance

Specs |