Sirrus X

Navy / Satin White Mountains / Black Reflective

2021 Specialized Sirrus X



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.



Technical Specifications

FRAME Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
FORK Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5
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
FRONT BRAKE Shimano BR-MT200, hydraulic disc, 160mm
REAR BRAKE Shimano BR-MT200, hydraulic disc, 160mm
SHIFT LEVERS Shimano Deore, 10-speed
REAR DERAILLEUR Shimano Deore, Shadow Plus, GS cage, 10-speed
CASSETTE SunRace, 10-speed, 11-42t
CHAINRINGS 40T, Narrow-wide Steel
CHAIN KMC X10, 10-speed w/ reusable Missing Link™
CRANKSET Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring
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 TYRE Pathfinder Sport, 700x38mm
REAR TYRE Pathfinder Sport, 700x38mm
INNER TUBES Presta, 48mm valve
PEDALS Specialized Body Geometry Fitness, platform, plastic


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
HANDELBAR 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-CENTRE 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
CHAIN-STAY LENGTH 440mm 440mm 440mm 440mm 440mm 440mm
BB HEIGHT 284mm 284mm 284mm 284mm 284mm 284mm
SEAT-TUBE ANGLE 73.5 73.5 73.5 73.5 73.5 73.5
FORK LENGTH (FULL) 395mm 395mm 395mm 395mm 395mm 395mm
BB 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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