| Inches | CM | Size |
| 5'1"-5'5" | 155-165 | Small |
| 5'5"-5'9" | 165-175 | Medium |
| 5'9"-6'0" | 175-183 | Large |
| 6'0"6'4" | 183-193 | X-Large |
The Sirrus X is a master of versatility, delivering a rare blend of comfort, speed, and agility across everything from smooth tarmac to rugged gravel.
Performance & Comfort
The heart of the bike is the patent-pending Compliance Junction frame. By engineering vertical flex while maintaining lateral stiffness, this design absorbs road chatter without losing power. The result? A ride that is incredibly smooth and efficient on any surface.
Precision Engineering
Following the Rider-First Engineered philosophy, every carbon frame size is treated as a unique project. We tailor the tube dimensions and carbon layup for every single size, ensuring that every rider—regardless of height—experiences the same perfect balance of weight, responsiveness, and strength.
Handling & Agility
With its class-leading lightweight construction and precise steering, the Sirrus X feels like an extension of the rider. Its pedaling efficiency and sharp handling provide a confident, "telepathic" experience that makes navigating diverse terrain feel effortless.
Specialized
Sirrus X 5.0 (2027)
$2,350.00
In stock
SKU: 92427-3203
The Sirrus X is a master of versatility, delivering a rare blend of comfort, speed, and agility across everything from smooth tarmac to rugged gravel.
Performance & Comfort
The heart of the bike is the patent-pending Compliance Junction frame. By engineering vertical flex while maintaining lateral stiffness, this design absorbs road chatter without losing power. The result? A ride that is incredibly smooth and efficient on any surface.
Precision Engineering
Following the Rider-First Engineered philosophy, every carbon frame size is treated as a unique project. We tailor the tube dimensions and carbon layup for every single size, ensuring that every rider—regardless of height—experiences the same perfect balance of weight, responsiveness, and strength.
Handling & Agility
With its class-leading lightweight construction and precise steering, the Sirrus X feels like an extension of the rider. Its pedaling efficiency and sharp handling provide a confident, "telepathic" experience that makes navigating diverse terrain feel effortless.
SPECIFICATIONS
GEOMETRY
| XS | S | M | L | XL | XXL | |
|---|---|---|---|---|---|---|
| Crank Length | 165 | 170 | 170 | 175 | 175 | 175 |
| Handlebar Width | 680 | 680 | 680 | 680 | 680 | 680 |
| Stem Length | 60 | 70 | 80 | 90 | 100 | 110 |
| Saddle Width | 155 | 155 | 143 | 143 | 143 | 143 |
| Seatpost Length | 300 | 300 | 350 | 350 | 400 | 400 |
| Stack | 580 | 600 | 625 | 650 | 680 | 710 |
| Reach | 350 | 365 | 380 | 395 | 410 | 425 |
| Head-Tube Length | 107 | 128 | 151 | 176 | 208 | 237 |
| Head-Tube Angle | 69.5 | 69.5 | 70 | 70.5 | 70.5 | 71 |
| B-B Height | 268 | 268 | 268 | 268 | 268 | 268 |
| B-B Drop | 80 | 80 | 80 | 80 | 80 | 80 |
| Trail | 76 | 76 | 72 | 69 | 69 | 66 |
| Fork Length (full) | 395 | 395 | 395 | 395 | 395 | 395 |
| Fork Rake/Offset | 51 | 51 | 51 | 51 | 51 | 51 |
| Front-Center | 597 | 619 | 637 | 656 | 681 | 700 |
| Chain-Stay Length | 440 | 440 | 440 | 440 | 440 | 440 |
| Wheelbase | 1024 | 1047 | 1065 | 1084 | 1109 | 1128 |
| Top-Tube Length (horizontal) | 521 | 547 | 568 | 590 | 614 | 644 |
| Bike Stand-Over Height | 703.3 | 748.3 | 780.5 | 807.1 | 847.7 | 872.5 |
| Seat-Tube Length | 355 | 416 | 453 | 483 | 533 | 563 |
| Seat-Tube Angle | 74 | 73.5 | 73.5 | 73.5 | 73.5 | 73 |
FEATURES
Key Technologies
FACT Carbon Fiber
Short for Functional Advanced Composite Technology, is a comprehensive engineering process that guides the development of frames and components, all the way from initial sketches to finished products.
More Info
Future Shock
The Future Shock features up to 20mm of travel, and it's positioned above the head tube in order to move in a vertical path. So when the front wheel encounters rough terrain, the bike moves up towards your hands and preserves your forward momentum without slowing you down.
More Info
