2021 Specialized Bicycles Roubaix Pro Base

	49	52	54	56	58	61
Stack	555mm	570mm	585mm	605mm	630mm	665mm
Reach	353mm	368mm	376mm	384mm	392mm	398mm
Stack to Reach Ratio	1.57:1	1.55:1	1.56:1	1.58:1	1.61:1	1.67:1
Seat Tube Length, Unknown	410mm	446mm	465mm	485mm	505mm	547mm
Top Tube Length, Effective/Horizontal Center	525mm	533mm	545mm	563mm	579mm	595mm
Top Tube Slope	19.1deg	16.1deg	15.3deg	15deg	15.2deg	14.3deg
Head Tube Angle	71.5deg	72deg	72.75deg	73.5deg	73.5deg	74deg
Seat Tube Angle	74deg	74deg	74deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	112mm	125mm	143mm	170mm	205mm
Bottom Bracket Drop	77.5mm	77.5mm	76mm	76mm	74.5mm	74.5mm
Bottom Bracket Height	261.5mm	261.5mm	263mm	263mm	264.5mm	264.5mm
Chainstay Length	413mm	413mm	415mm	415mm	418mm	418mm
Chainstay Length Horizontal	405.7mm	405.7mm	408mm	408mm	411.3mm	411.3mm
Front-Center	581mm	586mm	585mm	592mm	607mm	618mm
Front-Center Horizontal	576.3mm	580.3mm	580mm	587mm	602.7mm	612.7mm
Wheelbase	982mm	986mm	988mm	995mm	1014mm	1024mm
Fork Offset/Rake	50mm	50mm	44mm	44mm	44mm	44mm
Fork Length, Unknown	370mm	370mm	370mm	370mm	370mm	370mm
Trail	60.7mm mid/neutral	57.6mm mid/neutral	59.2mm mid/neutral	54.5mm mid/neutral	54.5mm mid/neutral	51.4mm mid/neutral
Mechanical Trail	57.6mm	54.8mm	56.5mm	52.3mm	52.3mm	49.4mm
Wheel Flop	18.3mm	16.9mm	16.8mm	14.9mm	14.9mm	13.6mm
Standover Height	715mm	743mm	762mm	783mm	805mm	844mm
Tire to Pedal Spindle	77mm 165 mm cranks	77mm 170 mm cranks	73.5mm 172.5 mm cranks	80.5mm 172.5 mm cranks	93mm 175 mm cranks	104mm 175 mm cranks
Pedal Spindle to Ground Clearance	96.5mm 165 mm cranks	91.5mm 170 mm cranks	90.5mm 172.5 mm cranks	90.5mm 172.5 mm cranks	89.5mm 175 mm cranks	89.5mm 175 mm cranks

	49	52	54	56	58	61
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
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1660mm	1664mm	1666mm	1673mm	1692mm	1702mm
Crank Length	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	380mm	400mm	420mm	420mm	440mm	440mm
Stem Length	80mm	90mm	100mm	100mm	110mm	110mm

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.

Category Trend

Source:https://www.specialized.com/ca/en/roubaix-pro/p/184473?color=293281-184473

Geometry