Rear tire: 700C×38.
Velopedia Bicycle Archive
2021 Specialized Sirrus X 5.0
Original specifications: geometry for 6 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2021
- Category
- Hybrid
- Original MSRP
- $2,499.99
- Sizes
- XS, S, M, L, XL, XXL
- Colors
- Gloss Blue Tint / Ice Blue / Satin Black Reflective, Gloss Redwood / Smoke / Satin Black Reflective
- Geometry
- 6 manufacturer sizes
- In this record
- 22 specifications · 6 archived images · original MSRP · geometry
- Archive ID
- 900004277
Model history 2 other years
Original buildCarbon Fiber
Frameset
| Frame Construction | Specialized FACT 9r carbon, Fitness Geometry, 1x drivetrain, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug + Play fender mounts |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Carbon Monocoque, 12x100mm thru-axle, flat-mount disc, Future Shock 1.5 |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | Shimano SLX M7100, 12-speed |
|---|---|
| Rear Derailleur | Shimano SLX M7100, SGS, 12-speed |
| Crankset | Praxis Alba; chainrings: 40T |
| Bottom Bracket | Praxis 68-0201B, 68mm BSA |
| BB Shell Width | 68 mm |
| Cassette | Sunrace CSMZ800, 12-speed, 11-51t |
| Chain | KMC X12, 12-speed w/ Missing Link™ |
| Pedals | Platform, alloy |
Brakes
| Brakes | (F) Shimano BR-MT200, hydraulic disc, 160mm / (R) Shimano BR-MT200, hydraulic disc, 160mm |
|---|
Cockpit & Contact Points
| Handlebar | Specialized, alloy, 9-degree backsweep, 15mm rise, 31.8mm |
|---|---|
| Stem | Future Stem, Comp |
| Saddle | Body Geometry Power Sport, steel rails |
| Seatpost | Alloy, 2-bolt, 14mm offset, 27.2mm |
Wheels & Tires
| Hubs | (F) Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24H / (R) Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28H |
|---|---|
| Rims | 700C disc, double-wall alloy, 30mm depth, 21mm internal width, disc-specific |
| Spokes | Stainless, 14g |
| Front Tire | Pathfinder Pro, 2Bliss Ready, 700x38mm |
| Rear Tire | Pathfinder Pro, 2Bliss Ready, 700x38mm |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 16 measurements
| Measurement | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| Seat tube | 355 mm | 416 mm | 453 mm | 483 mm | 533 mm | 563 mm |
| Effective top tube | 532 mm | 554 mm | 573 mm | 580 mm | 603 mm | 628 mm |
| Head tube | 125 mm | 143 mm | 169 mm | 186 mm | 223 mm | 246 mm |
| Head-tube angle | 70° | 70° | 71° | 71.5° | 72° | 72° |
| Seat-tube angle | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° | 73° |
| Chainstay / rear center | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1027 mm | 1050 mm | 1060 mm | 1063 mm | 1082 mm | 1101 mm |
| Bottom-bracket drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Bottom-bracket height | 275 mm | 275 mm | 275 mm | 275 mm | 275 mm | 275 mm |
| Reach | 355 mm | 371 mm | 384 mm | 386 mm | 398 mm | 410 mm |
| Stack | 585 mm | 602 mm | 631 mm | 649 mm | 687 mm | 709 mm |
| Standover height | 714 mm | 756 mm | 788 mm | 813 mm | 849 mm | 875 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 602 mm | 625 mm | 635 mm | 637 mm | 656 mm | 675 mm |
| Trail | 71 mm | 71 mm | 65 mm | 62 mm | 58 mm | 58 mm |
| Fork length / axle-to-crown | 390 mm | 390 mm | 390 mm | 390 mm | 390 mm | 390 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Parts & serviceability
Find replacement parts

Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links
Replacement option
More parts (6)Fewer parts

Shimano SLX RD-M7100 Rear Derailleur Black, SGS, 12-Speed
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2021 Specialized Sirrus X 5.0 · Hybrid · Published sizes: XS, S, M, L, XL, XXL
Frame and fork
Inspect the frame and fork →Archived: Frame: Specialized FACT 9r carbon, Fitness Geometry, 1x drivetrain, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug + Play fender mounts · Fork: Carbon Monocoque, 12x100mm thru-axle, flat-mount disc, Future Shock 1.5 · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano SLX M7100, 12-speed · Rear derailleur: Shimano SLX M7100, SGS, 12-speed · Crankset: Praxis Alba; chainrings: 40T · Bottom bracket: Praxis 68-0201B, 68mm BSA · Cassette: Sunrace CSMZ800, 12-speed, 11-51t · Chain: KMC X12, 12-speed w/ Missing Link™
Brakes
Inspect the brakes →Archived: Brakes: (F) Shimano BR-MT200, hydraulic disc, 160mm / (R) Shimano BR-MT200, hydraulic disc, 160mm
Wheels and tires
Check wheels and tires →Archived: Rims: 700C disc, double-wall alloy, 30mm depth, 21mm internal width, disc-specific · Hubs: (F) Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24H / (R) Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28H · Front tire: Pathfinder Pro, 2Bliss Ready, 700x38mm · Rear tire: Pathfinder Pro, 2Bliss Ready, 700x38mm
Controls and contact points
Archived: Handlebar: Specialized, alloy, 9-degree backsweep, 15mm rise, 31.8mm · Stem: Future Stem, Comp · Seatpost: Alloy, 2-bolt, 14mm offset, 27.2mm · Saddle: Body Geometry Power Sport, steel rails · Pedals: Platform, alloy
Before and during the test ride
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Gallery6 images
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





