Prologue Fonzaso Titanium SL Disk

Starting from $5795.00

Call or visit us in-person for more information.

Prologue Fonzaso Disc

Your forever all-road companion—custom-built in butted 3AL/2.5V titanium for riders 4’10″–6’11″ with geometry dialed to your exact fit.

Key Features

• Material: 3AL/2.5V Butted Titanium
  Delivers a uniquely compliant ride that soaks up chatter on rough roads while staying snappy under power—perfect for both gravel adventures and paceline hammer sessions.
• Lifetime Durability
  Titanium’s natural corrosion resistance and extraordinary fatigue life make the Fonzaso Disc “bomb-proof.” This frame is guaranteed to outlast every other bike in your garage.
• Full Customization
  From seat-tube length to stack, reach, head-tube angle, and more, we tailor every dimension to your body and riding style—no off-the-shelf compromises.
• Versatile Clearance
  Flat-mount disc brakes (160 mm rotor) plus generous tire clearance up to 700×45 mm let you run smooth 30 mm road tires, rugged gravel treads, or anything in between.

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.

Finishing Kits

Elite Kit

• Handle Bar: Deda Zero2 handlebar, 38,40,42,44
• Stem: Deda Zero2 stem
• Saddle: Pro Turnix saddle 142/152
• Tubes: Kenda x2
• Tires: Michelin Lithion 2
• Bar Tape: Deda Cork Tape

Pro Kit

• Handle Bar: Rhus Carbon RD Aero bar 40,42,44
• Stem: Rhus Carbon Stem 9.10.11.12
• Saddle: Pro Falcon saddle 132,142,152
• Tubes: Kenda
• Tires: Pirelli P Zero tires 25/28
• Bar Tape: Fizik or Supacaz endurance tape

Wheelsets

• Training: Shimano RS170
• Pro: Rhus 3.8/5.0/6.0 Carbon wheelset
• Snob: Shimano Dura Ace C40

Groupsets

Shimano Road Disc

• Dura Ace DI2 Hydro w charger/wires/rotors
• Ultegra DI2 Hydro w charger/wires/rotors
• 105 DI2 Hydro w charger/wires/rotors
• Shimano 105 Hydro w rotors

Sram Road Disc

• Sram Red HRD AXS 12 speed 2X
• Sram Red HRD AXS 12 speed 1X
• Sram Force HRD AXS 12 speed 2X
• Sram Force HRD AXS 12 speed 1X
• Sram Apex 1 HRD

Campagnolo Road Disc

• Campagnolo Super Record EPS DB
• Campagnolo Super Record DB
• Campagnolo Record DB
• Campagnolo Chorus DB

Geometry and Sizing