2021 Specialized

Sirrus X 4.0

A 700c aluminum frame fitness bike with upper mid-range components and hydraulic disc brakes.
Compare the full range

MSRP$1,500
FrameAluminum
SuspensionHardtail, 20mm
ForkSpecialized Future Shock 1.5
Wheels700c Aluminum
Drivetrain1 × 11
GroupsetDeore
BrakesHydraulic Disc
Where to Buy
Similar Bikes

For This Bike

Accessories
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Sirrus X 4.0
Other Fitness bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

31 mph

Sirrus X 4.0

35 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Sirrus X model range

View Comparison
Reviews
road.cc
Specialized Sirrus X 3.0

May 2022 · Stu Kerton

Hybrid do-it-all with a bit of edge and attitude, just as happy around town as it is on the byways

Highs
  • Capable on the gravel and road

  • Good spread of gears

  • Excellent hydraulic brakes

  • Reflective detailing is eye-catching

Lows
  • Flat bar makes filtering through urban traffic trickier

Read Review

Bicycling
The Specialized Sirrus X 4.0 is One Heck of a Hybrid

Mar 2020

Smooth, fast, and utilitarian—this commuter has it all.

Highs
  • Future Shock in the head tube smooths the ride

  • Plenty of go-fast and hill-climbing gearing

  • Part smooth/part knobby, 38mm-wide tires

Lows
  • There are more affordable commuter/fitness options out there

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
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

BB StandardBSA, 68mm, Threaded

ColorsGloss Sky Blue / Tarmac Black / Satin Black Reflective; Gloss Smoke / Cool Grey / Satin Black Reflective

Fork

Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5

Travel20mm

Bottom Bracket

Threaded BSA 68mm, 24mm spindle

Stem

Future Stem, Comp

Handlebar

Specialized, alloy, 9-degree backsweep, 15mm rise, 31.8mm

Saddle

Bridge Comp, Hollow Cr-mo rails, 155/143mm

Seatpost

Alloy, 2-bolt, 14mm offset, 27.2mm

TypeRigid

Pedals

Specialized Body Geometry Fitness, platform, plastic

Groupset
Rear Derailleur

Shimano Deore M5100, SGS, 11-speed

Crank

Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring, 40T

Shifters

Shimano Deore M5100, 11-speed

Cassette

Shimano Deore M5100, 11-speed, 11-42t

Chain

KMC X11, 11-speed w/ Missing Link™

Brakes

Front: Shimano BR-MT200, hydraulic disc, 160mm, Rear: Shimano BR-MT200, hydraulic disc, 160mm

TypeHydraulic Disc

Wheels
Rims

700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h

Spokes

Stainless, 14g

Front Hub

Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24H

Rear Hub

Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28H

Tires

Front: Pathfinder Sport, 700x38mm, Rear: Pathfinder Sport, 700x38mm

Rider Notes
Riders Also Viewed

Last updated November 8
Not listed for 137 days