Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2021 Specialized Sirrus X 4.0
Value Guide market data · 2021 Specialized Sirrus X 4.0
12-month trend
11%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Specialized Sirrus X 4.0
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Sirrus X model years
2021 Sirrus X 4.0 lineup
Overview
About this bike
2021 Specialized Sirrus X 4.0 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5
- Frame
- Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/fender mounts
Drivetrain
- Groupset
- 2021 Specialized Sirrus X 4.0
- Crankset
- Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring
- Bottom Bracket
- Threaded BSA 68mm
- Chain
- KMC X11, 11-speed w/ Missing Link / KMC X11, 11-speed w/Missing Link
- Rear Derailleur
- Shimano Deore M5100, SGS, 11-speed
- Cassette/Rear Cogs
- Shimano Deore M5100, 11-speed, 11-42t
- Chainrings
- 40T
- Shifters
- Shimano Deore M5100, 11-speed
- Cassette/Freewheel
- Shimano Deore M5100, 11-speed, 11-42t
Brakes
- Brakes
- Shimano BR-MT200, hydraulic disc / Shimano BR-MT200, hydraulic disc, 160mm
Cockpit
- Seatpost
- Alloy, 2-bolt, 14mm offset, 27.2mm
- Saddle
- Bridge Comp, Hollow Cr-mo rails, 155/143mm
- Stem
- Future Stem, Comp
- Handlebars
- Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm
- Seat Post
- Alloy, 2-bolt, 14mm offset, 27.2mm
- Tape/Grips
- Specialized Neutralizer, Body Geometry, locking grip
Wheels & Tires
- Hubs
- Front: Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24h<br>Rear: Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28h
- Rims
- 700c disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
- Tires
- Pathfinder Sport, 700x38mm / Pathfinder Sport, 700c x 38
- Axles
- Front: 100 x 12mm thru axle<br>Rear: 142 x 12mm thru axle
- Spokes
- Stainless, 14g
Pedals
- Pedals
- Specialized Body Geometry Fitness, platform, plastic
Accessories
- Rims/Wheels
- 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
- Color
- Gloss Sky Blue/Tarmac Black/Satin Black Reflective / Gloss Smoke/Cool Grey/Satin Black Reflective / Gloss Ice Papaya/Blaze/Satin Black Reflective
Weight & Sizing
- Size
- XX-Small / X-Small / Small / Medium / Large / X-Large
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.