| 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 |
Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between.
SMOOTH, COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. With bigger, confidence-inspiring tires, a slightly more upright riding position, and a super intuitive one-by drivetrain.
RIDER-FIRST ENGINEERED: Like all Specialized performance bikes, the geometry of each frame is uniquely crafted. This means that for every frame, each tube size is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness to ensure that no matter what size you’re riding, you will experience the world’s best ride.
NIMBLE: Class-leading light-weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
- Future Shock 1.5 delivers 20mm of compliance to give maximum comfort and control over the rough stuff.
- Added Carbon Fork and an A1 SL alloy frame delivers a build 1.6lb (.8kg) lighter than the 3.0 model–no heavy hybrid featuring a mountain style suspension fork comes close.
- Wide-range 1x11 Shimano CUES shifting delivers precise shifting.
Specialized
Sirrus X 4.0 (2026)
$1,400.00
Out of stock
SKU: 92426-5100
Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between.
SMOOTH, COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. With bigger, confidence-inspiring tires, a slightly more upright riding position, and a super intuitive one-by drivetrain.
RIDER-FIRST ENGINEERED: Like all Specialized performance bikes, the geometry of each frame is uniquely crafted. This means that for every frame, each tube size is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness to ensure that no matter what size you’re riding, you will experience the world’s best ride.
NIMBLE: Class-leading light-weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
- Future Shock 1.5 delivers 20mm of compliance to give maximum comfort and control over the rough stuff.
- Added Carbon Fork and an A1 SL alloy frame delivers a build 1.6lb (.8kg) lighter than the 3.0 model–no heavy hybrid featuring a mountain style suspension fork comes close.
- Wide-range 1x11 Shimano CUES shifting delivers precise shifting.
GEOMETRY
| XXS | XS | S | M | L | XL | |
|---|---|---|---|---|---|---|
| Crank Length | 165 | 165 | 170 | 170 | 175 | 175 |
| Handlebar Width | 680 | 680 | 680 | 680 | 680 | 680 |
| Stem Length | 60 | 60 | 70 | 80 | 90 | 100 |
| Saddle Width | 155 | 155 | 155 | 143 | 143 | 143 |
| Seatpost Length | 300 | 300 | 350 | 350 | 400 | 400 |
| Stack | 587 | 590 | 606 | 635 | 651 | 672 |
| Reach | 355 | 371 | 376 | 382 | 386 | 398 |
| Head-Tube Length | 111 | 125 | 143 | 169 | 186 | 208 |
| Head-Tube Angle | 69.5 | 70 | 70 | 71 | 71 | 71 |
| B-B Height | 284 | 284 | 284 | 284 | 284 | 284 |
| B-B Drop | 70 | 70 | 70 | 70 | 70 | 70 |
| Trail | 78 | 75 | 75 | 68 | 68 | 68 |
| Fork Length (full) | 395 | 395 | 395 | 395 | 395 | 395 |
| Fork Rake/Offset | 51 | 51 | 51 | 51 | 51 | 51 |
| Front-Center | 602 | 618 | 629 | 634 | 644 | 663 |
| Chain-Stay Length | 440 | 440 | 440 | 440 | 440 | 440 |
| Wheelbase | 1074 | 1093 | 1033 | 1049 | 1060 | 1065 |
| Top-Tube Length (horizontal) | 529 | 549 | 559 | 573 | 581 | 599 |
| Bike Stand-Over Height | 700 | 722 | 750 | 778 | 810 | 831 |
| Seat-Tube Length | 360 | 395 | 440 | 470 | 510 | 530 |
| Seat-Tube Angle | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 |