2011 Specialized Bicycles Amira S-Works

	48	44	44	48	51	51	54	54	56	56
Stack	515mm	—	—	—	—	—	—	—	—	—
Reach	371mm	—	—	—	—	—	—	—	—	—
Stack to Reach Ratio	1.39:1	—	—	—	—	—	—	—	—	—
Seat Tube Length, C-T	420mm	390mm	390mm	420mm	450mm	450mm	480mm	480mm	495mm	495mm
Seat Tube Length, Effective Unknown	300mm	300mm	300mm	300mm	350mm	350mm	350mm	350mm	350mm	350mm
Top Tube Length, Effective/Horizontal Center	506mm	498mm	498mm	506mm	518mm	518mm	537mm	537mm	548mm	548mm
Top Tube Slope	12.8deg	—	—	—	—	—	—	—	—	—
Head Tube Angle	71.25deg	70.5deg	70.5deg	71.25deg	72deg	72deg	72deg	72deg	72deg	72deg
Seat Tube Angle	75.75deg	76deg	76deg	75.75deg	75.5deg	75.5deg	74deg	74deg	73.5deg	73.5deg
Head Tube Length	115mm	105mm	105mm	115mm	125mm	125mm	145mm	145mm	165mm	165mm
Bottom Bracket Drop	73mm	73mm	73mm	73mm	73mm	73mm	73mm	73mm	71.5mm	71.5mm
Bottom Bracket Height	261mm	261mm	261mm	261mm	261mm	261mm	261mm	261mm	262.5mm	262.5mm
Chainstay Length	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm	408mm	408mm
Chainstay Length Horizontal	398.4mm	398.4mm	398.4mm	398.4mm	398.4mm	398.4mm	398.4mm	398.4mm	401.7mm	401.7mm
Front-Center	579mm	576mm	576mm	579mm	582mm	582mm	588mm	588mm	595mm	595mm
Front-Center Horizontal	574.6mm	570.6mm	570.6mm	574.6mm	577.6mm	577.6mm	583.6mm	583.6mm	591.3mm	591.3mm
Wheelbase	973mm	969mm	969mm	973mm	976mm	976mm	982mm	982mm	993mm	993mm
Fork Offset/Rake	51mm	51mm	51mm	51mm	49mm	49mm	49mm	49mm	49mm	49mm
Trail	59.5mm mid/neutral	64.2mm mid/neutral	64.2mm mid/neutral	59.5mm mid/neutral	57mm mid/neutral	57mm mid/neutral	57mm mid/neutral	57mm mid/neutral	57mm mid/neutral	57mm mid/neutral
Mechanical Trail	56.4mm	60.5mm	60.5mm	56.4mm	54.2mm	54.2mm	54.2mm	54.2mm	54.2mm	54.2mm
Wheel Flop	18.1mm	20.2mm	20.2mm	18.1mm	16.8mm	16.8mm	16.8mm	16.8mm	16.8mm	16.8mm
Standover Height	718mm	692mm	692mm	718mm	735mm	735mm	758mm	758mm	777mm	777mm
Tire to Pedal Spindle	77.5mm 167.5 mm cranks	74.5mm 167.5 mm cranks	74.5mm 167.5 mm cranks	77.5mm 167.5 mm cranks	78mm 170 mm cranks	78mm 170 mm cranks	84mm 170 mm cranks	84mm 170 mm cranks	88.5mm 172.5 mm cranks	88.5mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	93.5mm 167.5 mm cranks	93.5mm 167.5 mm cranks	93.5mm 167.5 mm cranks	93.5mm 167.5 mm cranks	91mm 170 mm cranks	91mm 170 mm cranks	91mm 170 mm cranks	91mm 170 mm cranks	90mm 172.5 mm cranks	90mm 172.5 mm cranks

	48	44	44	48	51	51	54	54	56	56
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	23mm	23mm	23mm	23mm	23mm	23mm	23mm	23mm	23mm	23mm
Tire Outer Diameter	668mm	668mm	668mm	668mm	668mm	668mm	668mm	668mm	668mm	668mm
Bike Length with Tires	1641mm	1637mm	1637mm	1641mm	1644mm	1644mm	1650mm	1650mm	1661mm	1661mm
Crank Length	167.5mm	167.5mm	167.5mm	167.5mm	170mm	170mm	170mm	170mm	172.5mm	172.5mm
Handlebar Width	380mm	360mm	360mm	380mm	400mm	400mm	400mm	400mm	420mm	420mm
Stem Length	75mm	75mm	75mm	75mm	90mm	90mm	100mm	100mm	100mm	100mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale

Category Trend

Performance Road

Source:http://frameandwheelservices.blogspot.com/2012/08/2010-specialized-amira-comp-48cm-carbon.html, https://www.specialized.com/us/en/s-works-amira/p/23437?color=36024-23437

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2011 Specialized Bicycles Amira S-Works

Geometry

S-Works Build

Stack and Reach vs. Category Trend