	S	M	L	XL	XXL
Stack	619mm	629mm	643mm	661mm	685mm
Reach	387mm	413mm	435mm	456mm	469mm
Stack to Reach Ratio	1.6:1	1.52:1	1.48:1	1.45:1	1.46:1
Seat Tube Length, C-TTT	396mm	430mm	468mm	523mm	565mm
Top Tube Length, Effective/Horizontal Center	567mm	596mm	622mm	648mm	668mm
Top Tube Length, Actual C-C	530mm	555mm	579mm	603mm	644mm
Top Tube Slope	29.3deg	24.8deg	21.2deg	20.7deg	6.9deg
Head Tube Angle	68deg	68deg	68deg	68deg	68deg
Seat Tube Angle	68deg	68.4deg	68.8deg	69.3deg	69.6deg
Effective Seat Tube Angle, Unknown	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	110mm	125mm	145mm	170mm
Bottom Bracket Drop	37mm	37mm	37mm	37mm	37mm
Bottom Bracket Height	332.4mm	332.4mm	332.4mm	332.4mm	332.4mm
Chainstay Length	455mm	455mm	455mm	455mm	455mm
Chainstay Length Horizontal	453.5mm	453.5mm	453.5mm	453.5mm	453.5mm
Front-Center	673.5mm	703.5mm	730.4mm	758.4mm	781.4mm
Front-Center Horizontal	672.5mm	702.5mm	729.5mm	757.5mm	780.5mm
Wheelbase	1126mm	1156mm	1183mm	1211mm	1234mm
Fork Offset/Rake	46.7mm	46.7mm	46.1mm	45.8mm	46.1mm
Trail	98.9mm very high	98.9mm very high	99.6mm very high	99.9mm very high	99.6mm very high
Mechanical Trail	91.7mm	91.7mm	92.3mm	92.6mm	92.3mm
Wheel Flop	34.4mm	34.4mm	34.6mm	34.7mm	34.6mm
Standover Height	750mm	741mm	750mm	764mm	779mm
Tire to Pedal Spindle	134.1mm 170 mm cranks	159.1mm 175 mm cranks	186mm 175 mm cranks	214mm 175 mm cranks	237mm 175 mm cranks
Pedal Spindle to Ground Clearance	162.4mm 170 mm cranks	157.4mm 175 mm cranks	157.4mm 175 mm cranks	157.4mm 175 mm cranks	157.4mm 175 mm cranks

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

2015 Specialized Bicycles Stumpjumper FSR Comp Evo 29

Geometry