Specialized Sirrus X 4.0, Gloss Smoke, Unisex Fitness Bike
The 2021 Specialized Sirrus X 4.0 is more comfortable than ever 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. It's also equipped with next-level comfort from scientifically tested and ergonomically engineered Shared Platform Body Geometry saddle, handgrips, and pedals. The Sirrus X 4.0 is equipped with the revolutionary Future Shock to take the sting out of bumps and potholes.
- 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 1x11 Shimano Deore shifting delivers precise shifting for the long haul.
X-Small: Suit 152-158cm rider height
Small: Suit 155-165cm rider height
Medium: Suit 165-175cm rider height
Large: Suit 175-183cm rider height
X-Large: Suit 183-193cm rider height
XX-Large: Suit 191-198cm rider height
Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
Specialized Neutralizer, Body Geometry, locking grip
Bridge Sport, Steel rails, 155/143mm
Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm
Shimano Deore M4100, 10-speed
Shimano Deore, 10spd, 11-42t
Shimano Deore M4120, SGS, 10-speed
KMC X10, 10-speed w/ reusable Missing Link™
Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide steel chainring
Threaded BSA 68mm
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Pathfinder Sport, 700x42
Pathfinder Sport, 700x42
Presta, 40mm valve
Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Specialized Body Geometry Fitness, platform, plastic