2012 Specialized Bicycles Hardrock Base

	15.5	19.0	21.0	23.0
Stack	622mm	634mm	653mm	672mm
Reach	395mm	416mm	440mm	456mm
Stack to Reach Ratio	1.57:1	1.52:1	1.48:1	1.47:1
Seat Tube Length, C-T	394mm	483mm	533mm	584mm
Top Tube Length, Effective/Horizontal Unknown	574mm	610mm	640mm	660mm
Top Tube Length, Actual C-C	555mm	581mm	610mm	631mm
Top Tube Slope	25.7deg	17.2deg	13.6deg	10.4deg
Head Tube Angle	70.5deg	71deg	71deg	71deg
Seat Tube Angle	73deg	72deg	72deg	72deg
Head Tube Length	100mm	110mm	130mm	150mm
Bottom Bracket Drop	68.5mm	68.5mm	68.5mm	68.5mm
Bottom Bracket Height	293.3mm	293.3mm	293.3mm	293.3mm
Chainstay Length	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	444.8mm	444.8mm	444.8mm	444.8mm
Front-Center	641.9mm	663.8mm	694.6mm	715.5mm
Front-Center Horizontal	638.2mm	660.2mm	691.2mm	712.2mm
Wheelbase	1083mm	1105mm	1136mm	1157mm
Fork Offset/Rake	44.5mm	46.8mm	47.3mm	45.8mm
Trail	80.9mm very high	75.1mm high	74.6mm high	76.1mm high
Mechanical Trail	76.2mm	71mm	70.5mm	72mm
Wheel Flop	25.5mm	23.1mm	23mm	23.4mm
Standover Height	710mm	824mm	858mm	894mm
Tire to Pedal Spindle	110.1mm 170 mm cranks	132mm 170 mm cranks	162.8mm 170 mm cranks	183.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	123.3mm 170 mm cranks	123.3mm 170 mm cranks	123.3mm 170 mm cranks	123.3mm 170 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

Source:https://www.specialized.com/us/en/hardrock-sport-disc-29/p/35007?color=79776-35007

Geometry