ULTRADYNAMICO CAVA JFF TYRES

The Ultradynamico Cava JFF is the minimalist tire for riders who want the free speed of a high-volume slick but with more predictability in loose corners. Named after Catalan sparkling wine, the 3D diamond file tread delivers around 20–30% more traction than a true slick on granular terrain, while continuous centre negative space keeps rolling speed high. Slightly higher volume than the Rosé for the same effective outside diameter. Race compound throughout.

JFF stands for Just For Fun — but don't let that mislead you. JFF casing is an intermediate option: still unprotected sidewalls, but thicker and more durable than the Race. No puncture protection on top either. For more protection against slashes or punctures, consider the Robusto or Rozzo casing options. Tubeless compatible. Sold individually, FSC recyclable cardboard.

Sizing note (700c × 39): Designed as a high-volume road tire for smooth dirt roads rather than aggressive gravel. Measures closer to 37–38mm on initial mount, stretches toward 39mm with use.

Sizing note (700c × 33): A road-specific classics tire for cobbles and light gravel connectors — not a gravel tire.

• Tread: 3D diamond file

• Casing: JFF (unprotected sidewalls, more durable than Race)

• Compound: Race

• Tubeless compatible

• Weights: 27.5×2.2 — 585g / 26×2.1 — 560g / 650b×47.99 — 505g / 700c×42 — 470g / 700c×39 — 365g / 700c×33 — 285g

• Sold individually