Specialized Sirrus Bike

If you're going to get in shape you need to move, and nothing wants to help you move faster than our Sirrus Disc. It takes a no-nonsense approach to its design, giving you everything that you need, like superior braking, and nothing that you don't.

• Working with our Body Geometry team, we designed a frame that strikes the optimal balance between comfort and efficiency. The A1 SL Premium Aluminum construction pairs weight savings with rugged durability, while the rack, fender, and disc mounts give you an incredibly versatile package.
• A Specialized Canopy Comp saddle offers plenty of support and cushion to ensure you're comfortable out on the road.
• Promax F1 hydraulic disc brakes are spec'd on this Sirrus to ensure consistent, powerful braking.

TECHNICAL SPECIFICATIONS

DRIVETRAIN

• BOTTOM BRACKET: 68mm, square taper, 124.5mm length
• CHAIN: KMC X8 w/ Missing Link™, 8-speed
• CRANKSET: Shimano Tourney, TY501
• SHIFT LEVERS: Shimano Acera, 8-speed
• FRONT DERAILLEUR: Shimano Tourney, 3-speed, top-swing
• CASSETTE: Shimano Altus, 8-speed, 11-32t
• CHAINRINGS: 48/38/28T
• REAR DERAILLEUR: Shimano Altus, 7-/8-speed

SUSPENSION

• FORK: Steel, flat-mount disc, 1-1/8" steerer, QR, Plug + Play rack/fender mounts

COCKPIT

• SADDLE: Specialized Canopy Sport, steel rails, 155mm
• SEAT BINDER: Bolt-type, 31.8mm
• SEATPOST: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
• HANDLEBARS: Double-butted alloy, 9-degree backsweep, 31.8mm
• STEM:Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

WHEELS & TIRES

• FRONT HUB: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
• REAR HUB: Alloy, 6-bolt disc, loose ball bearings, quick-release, 8-/9-speed freehub, 32h
• INNER TUBES: Schrader valve
• SPOKES: Stainless, 14g
• RIMS: 700C disc, double-wall alloy, 22mm depth, 21mm internal width, disc-specific
• FRONT TIRE: Specialized Nimbus II Sport Reflect, 60TPI, wire bead w/ Black Belt protection, 700x32mm
• REAR TIRE: Specialized Nimbus II Sport Reflect, 60TPI, wire bead w/ Black Belt protection, 700x32mm

BRAKES

• FRONT BRAKE: Promax F1, hydraulic disc, flat-mount, 160mm
• REAR BRAKE: Promax F1, hydraulic disc, flat-mount, 140mm

ACCESSORIES

• PEDALS: Specialized Body Geometry Fitness, platform, plastic

FRAMESET

• FRAME: Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts