FONZASO RIM

$0.00

Prologue Fonzaso SL
The bike for life—premium titanium with modern tire clearance and custom geometry for every rider.

Key Highlights

  • Build Material
    3AL/2.5V butted titanium tubing for the ideal blend of comfort, durability, and ride feedback—even if it costs a few extra grams over carbon.

  • Direct-Mount Discs
    Engineered for 160 mm rotors and cantilever clearance, giving you powerful stopping in all conditions.

  • 30 mm Tire Ready
    Room for up to 30 mm rubber to smooth out rough pavement, chip-seal, or light gravel without sacrificing agility.

  • Fully Custom Geometry
    From 4’10” through 6’11” and every stack/reach in between—no stock-size compromises.

  • Lifetime Durability
    Titanium’s corrosion resistance and fatigue life make this frame the last you’ll ever need.

Why “Fonzaso”?

Named for the tranquil Italian village where Prologue’s founder perfected his craft alongside Sportful, the Fonzaso Disc embodies old-world road-riding soul and modern precision engineering—ready to be your lifelong ride, on every surface.

Prologue Fonzaso SL
The bike for life—premium titanium with modern tire clearance and custom geometry for every rider.

Key Highlights

  • Build Material
    3AL/2.5V butted titanium tubing for the ideal blend of comfort, durability, and ride feedback—even if it costs a few extra grams over carbon.

  • Direct-Mount Discs
    Engineered for 160 mm rotors and cantilever clearance, giving you powerful stopping in all conditions.

  • 30 mm Tire Ready
    Room for up to 30 mm rubber to smooth out rough pavement, chip-seal, or light gravel without sacrificing agility.

  • Fully Custom Geometry
    From 4’10” through 6’11” and every stack/reach in between—no stock-size compromises.

  • Lifetime Durability
    Titanium’s corrosion resistance and fatigue life make this frame the last you’ll ever need.

Why “Fonzaso”?

Named for the tranquil Italian village where Prologue’s founder perfected his craft alongside Sportful, the Fonzaso Disc embodies old-world road-riding soul and modern precision engineering—ready to be your lifelong ride, on every surface.

FRAME DESIGN

  • Built from butted 3AL/2.5V titanium, this frame resists corrosion and metal fatigue—meaning it won’t crack, rust, or wear out. It’s an investment you can ride for decades without worrying about replacing the core structure.

  • With direct-mount disc brakes, 30 mm tire clearance, and a tuned endurance-race geometry, the Fonzaso SL handles smooth tarmac, chip seal, and light gravel equally well—so one bike does it all.

  • Fully custom stack, reach, tube lengths and angles ensure you’re perfectly centered over the pedals. The inherent compliance of titanium soaks up road chatter, keeping you fresh on long rides.

  • An aggressive head-tube angle and short chainstays deliver instant turn-in and stability under power. Paired with stiff direct-mount rotors, you’ll sprint, climb, and corner with total confidence—whatever the road throws at you.