Specialized  2012 Sirrus Expert Disc

Combining the heart of the world's best road bikes with a flat-bar, urban-friendly form, Sirrus Expert Disc redefines the notion of versatility. Hydraulic disc brakes add confident braking in any weather with any load, plus the lightweight carbon fork and 2x10 FSA/Shimano drivetrain means lighter weight, smoother ride, and flawless shifting.

• All-new E5 fully-manipulated alloy disc frame is built for high speed, low-fuss, and great versatility, with tapered head tube, internal routing, low-mount disc dropout, and rack/fender mounts
• Sturdy alloy fork with Cr-Mo steerer with disc and fender/rack mounts for the ultimate multi-purpose bike
• Flak Jacket protection and a grooved tread make the 28c Specialized Nimbus tires perfect for city or open road use
• Shimano 2x10 drivetrain with Ultegra rear derailleur, 12-28t cassette, and FSA compact crank for road-bike gearing and max efficiency
• Adjustable 4-position oversized forged alloy stem with 31.8mm bar clamp for strength and versatile positioning
• Body Geometry Targa gel grips lock on and help alleviate hand pain and tingling fingers; compatible with integrated bar ends for changing hand position
• Strong, reliable Shimano dual-piston hydraulic disc brakes for sure stopping and control in any weather with any load
• Sporty yet comfortable Body Geometry Targa Comp fitness saddle with light, durable Cr-Mo rails

Specifications

FRAME	Specialized E5 aluminum with low mount disc dropout, fully manipulated butted tubing, smooth weld, internal cable routing, tapered/integrated headset, fender/rack eyelets
FORK	Alloy legs/crown, Cr-Mo steerer, disc mount, fender/rack eyelets
HEADSET	1-1/8" sealed Cr-Mo Campy Style integrated bearings, 15mm alloy cone spacer with 30mm of spacers
STEM	Specialized EliteSet, 3D forged alloy, 12-degree, 4-position adjustable, 4-bolt, 31.8mm clamp
HANDLEBARS	Specialized DB, butted alloy, flat bar, 6-degree bend, 31.8mm
TAPE	Body Geometry Targa lock-on
FRONT BRAKE	Shimano BR-M446 hydraulic disc, dual piston, 160mm rotors
REAR BRAKE	Shimano BR-M446 hydraulic disc, dual piston, 160mm rotors
BRAKE LEVERS	Shimano M505 hydraulic alloy lever
FRONT DERAILLEUR	New Shimano Tiagra 10-speed
REAR DERAILLEUR	Shimano Ultegra
SHIFT LEVERS	Shimano SL-R780, Rapidfire, 10-speed
CASSETTE	New Shimano Tiagra, 10-speed, 12-28t
CHAIN	KMC X10 nickel plate
CRANKSET	FSA Omega compact
CHAINRINGS	50/34, alloy outer ring
BOTTOM BRACKET	Cartridge, external bearing
PEDALS	Sirrus pedal, 1.5mm Varus Angle, nylon body, symmetric alloy cage, low profile bearing system, toe clip capable
RIMS	Sirrus SR300, semi-aero disc, 32h
FRONT HUB	Sirrus 460D, forged alloy, 6-bolt disc mount, 32h
REAR HUB	Sirrus 460D, forged alloy, 6-bolt disc mount, cassette, high-low flange, 32h
SPOKES	Stainless 2.0mm threadlocked
FRONT TIRE	Specialized Nimbus w/ Flak Jacket, 26 TPI, reflective sidewall, 700x28c
REAR TIRE	Specialized Nimbus w/ Flak Jacket, 26 TPI, reflective sidewall, 700x28c
INNER TUBES	Presta
SADDLE	Body Geometry Targa Comp, Cr-Mo rails, 143mm
SEATPOST	Specialized alloy, double bolt, 27.2mm
SEAT BINDER	Alloy, 31.8mm
NOTES	Chainstay protector, derailleur hanger, clear coat, owners manual

Geometry

Size	XS	SM	MD	LG	XL
Seat-Tube Length, B-B Center to Top	395mm	440mm	485mm	530mm	570mm
Top-Tube Length, Horizontal	555mm	570mm	580mm	600mm	620mm
B-B Drop	70mm	70mm	70mm	70mm	70mm
Chain-Stay Length	445mm	445mm	445mm	445mm	445mm
Seat-Tube Angle	73.5°	73.25°	73.5°	73°	73°
Head-Tube Angle	70.5°	71°	71.5°	72°	72°
Fork Rake	51mm	51mm	51mm	51mm	51mm
Trail	70mm	67mm	63mm	60mm	60mm
Front-Center	621mm	629mm	637mm	647mm	667mm
Wheelbase	1056mm	1065mm	1073mm	1082mm	1103mm
Stand-Over Height	716mm	750mm	786mm	821mm	859mm
Head-Tube Length	130mm	150mm	165mm	190mm	225mm
Handle-Bar Width	580mm	580mm	580mm	580mm	580mm
Stem Length	75mm	90mm	90mm	100mm	100mm
Crank Length	170mm	170mm	175mm	175mm	175mm
Seat-Post Length	300mm	350mm	350mm	350mm	350mm

TT is measured horizontally from center of HT to center of ST.