Specialized 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 the scientifically tested and ergonomically engineered Shared Platform Body Geometry saddle, handgrips, and pedals. Sirrus X 4.0 has been equipped with the revolutionary Future Shock to eliminate bumps and potholes. Here's to life on two wheels.

Features

• 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
• Wide-range 1x11 SRAM NX shifting delivers precise shifting for the long haul

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: Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5

Cockpit
Handlebars: Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Stem: Future Stem, Comp
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: Bolt-type, 31.8mm

Brakes
Front Brake: Tektro HD-R510, hydraulic disc, 160mm
Rear Brake: Tektro HD-R510, hydraulic disc, 160mm

Drivetrain
Shift Levers: SRAM NX, 11-speed
Rear Derailleur: SRAM NX, 11-speed
Cassette: SRAM PG-1130, 11-speed, 11-42t
Crankset: Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring
Chainrings: 40T
Bottom Bracket: Threaded BSA 68mm, 24mm spindle
Chain: KMC X11, 11-speed w/ Missing Link™

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: 700x28/38mm, 48mm Presta valve

Accessories
Pedals: Specialized Body Geometry Fitness, platform, plastic

Note: Specifications are subject to change without notice