The Opus Fortitude105 is built for riders who want road-bike speed with comfort and real-world practicality. Designed around Opus’ Progressive Geometry, this endurance-focused road bike delivers a smooth, confident ride that’s equally at home on long weekend rides, fast fitness loops, or daily commuting.
A lightweight aluminum frame paired with a full carbon tapered fork keeps the ride responsive while absorbing road vibrations. The bike is equipped with a complete Shimano 105 2x12, offering precise, reliable shifting and a wide gear range for climbs and long-distance efforts. Hydraulic disc brakes provide strong, smooth braking in all weather conditions.
Rolling on 32mm tires with clearance for up to 35mm, the Fortitude 105 adds extra comfort and versatility without sacrificing performance. Thoughtful touches like an ergonomic flared handlebar and mounts for rear rack and fenders make this a true do-it-all road bike.
Key Features
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Shimano 105 2x12 drivetrain for smooth, reliable shifting
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Lightweight aluminum frame with full carbon fork
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Hydraulic disc brakes for confident stopping power
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32mm tires with clearance for up to 35mm
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Progressive Geometry for endurance comfort and control
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Ergonomic flared handlebar for improved stability
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Rear rack and fender mounts for added versatility
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Color: Crystal Red
Specifications
Frame: Aluminum
Fork: Full carbon, tapered 1-1/2” to 1-1/8”
Weight: Approx. 21 lb
Sizes: XXS, XS, S, M, L, XL
Shifters: Shimano Tiagra 105, 2x12
Front Derailleur: Shimano 105 R7100
Rear Derailleur: Shimano 105 R7100
Crankset: Shimano 105 R7100
Chainrings: 50-34
Bottom Bracket: Shimano sealed cartridge
Cassette: Shimano 11-34t
Chain: Shimano HG54
Brakes: Shimano BRR7100 Flat Mount Hydraulic disc
Brake Levers: Shimano R7100
Handlebar: X-Race Aero 8° flare
Stem: Promax
Bar Tape: Velo VexGel
Rims: Weinmann U27TL
Hubs: Alex Bear Pawls through axle 12 mm fr/rr
Tires: Kenda Fortitude Pro 700 x 32
Saddle: Opus Endurance
Seatpost: Promax alloy 27.2 x 300
Pedals: Not included
