Sirrus X 4.0

Sirrus X is your ticket to riding more, and to places you never imagined possible. It's a comfortable, capable, "let's do stuff" kind of bike that will inspire you to ride more than you ever have before. With bigger, confidence inspiring tires, a slightly more upright riding position, a super intuitive one-by drivetrain, and plenty of mounts for racks and fenders —it's more than just a solid partner on pavement. Sirrus X is a dialed option when it's time to hit some gravel. We've also equipped every Sirrus X with next-level comfort from our scientifically tested and ergonomically engineered Shared Platform Body Geometry saddle, handgrips, and pedals. We also equipped Sirrus X with the revolutionary Future Shock to take the sting out of bumps and potholes. Here's to your life on two wheels.

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 1x10 Shimano Deore shifting delivers precise shifting for the long haul.

Manual Downloads

Specialized Bicycle Owner's Manual (All Languages)

Future Shock Front Suspension (2.0 damper/1.5 undamped) User Manual

Specialized Bicycle Owner's Manual (English)

Specialized Bicycle Owner's Manual (Japanese)

Specialized Bicycle Owner's Manual (Chinese Simplified)

Technical Specifications

Frameset

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

Suspension

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

Cockpit

HANDLEBARS	Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm
STEM	Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
TAPE	Specialized Neutralizer, Body Geometry, locking grip
SADDLE	Bridge Comp, Hollow Cr-mo rails, 155/143mm
SEATPOST	Alloy, 2-bolt, 14mm offset, 27.2mm
SEAT BINDER	Specialized bolt-type, alloy, 31.8mm

Brakes

FRONT BRAKE	Shimano BR-MT200, hydraulic disc, 160mm
REAR BRAKE	Shimano BR-MT200, hydraulic disc, 160mm

Drivetrain

SHIFT LEVERS	Shimano Deore, 10-speed
REAR DERAILLEUR	Shimano Deore, Shadow Plus, GS cage, 10-speed
CHAINRINGS	40T
CHAIN	KMC X10, 10-speed w/ reusable Missing Link™
CRANKSET	Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring

Wheels & Tires

RIMS	700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
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
SPOKES	Stainless, 14g
FRONT TIRE	Pathfinder Sport, 700x38mm
REAR TIRE	Pathfinder Sport, 700x38mm
INNER TUBES	Presta, 48mm valve

Accessories

PEDALS

Specialized Body Geometry Fitness, platform, plastic

* Specifications are subject to change without notice

Geometry

Sirrus X - Geometry

XXS XS S M L XL

	XXS	XS	S	M	L	XL
Crank Length	165mm	165mm	170mm	170mm	175mm	175mm
Stem Length	60mm	60mm	70mm	80mm	90mm	100mm
Seatpost Length	300mm	300mm	350mm	350mm	400mm	400mm
Saddle Width	155mm	155mm	155mm	143mm	143mm	143mm
Handlebar Width	660mm	660mm	660mm	680mm	680mm	680mm
Reach	355mm	371mm	376mm	382mm	386mm	398mm
Stack	587mm	590mm	606mm	635mm	651mm	672mm
Wheelbase	1033mm	1049mm	1060mm	1065mm	1074mm	1093mm
Bike Stand-Over Height	700mm	722mm	750mm	778mm	810mm	831mm
Head-Tube Length	111mm	125mm	143mm	169mm	186mm	208mm
Front-Center	602mm	618mm	629mm	634mm	644mm	663mm
Fork Rake/Offset	51mm	51mm	51mm	51mm	51mm	51mm
Head-Tube Angle	69.5°	70°	70°	71°	71°	71°
Trail	78mm	75mm	75mm	68mm	68mm	68mm
B-B Height	284mm	284mm	284mm	284mm	284mm	284mm
Chain-Stay Length	440mm	440mm	440mm	440mm	440mm	440mm
Fork Length (full)	395mm	395mm	395mm	395mm	395mm	395mm
Seat-Tube Angle	73.5°	73.5°	73.5°	73.5°	73.5°	73.5°
B-B Drop	70mm	70mm	70mm	70mm	70mm	70mm
Seat-Tube Length	360mm	395mm	440mm	470mm	510mm	530mm
Top-Tube Length (horizontal)	529mm	549mm	559mm	572mm	581mm	599mm

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Size Chart