2021 Jamis Bicycles Hijack Base

	15	17	19
Stack	608mm	617mm	626mm
Reach	410mm	433mm	455mm
Stack to Reach Ratio	1.48:1	1.42:1	1.38:1
Seat Tube Length, Unknown	381mm	431.8mm	482.6mm
Top Tube Length, Effective/Horizontal Unknown	585mm	610mm	635mm
Top Tube Slope	25.2deg	20.1deg	15.4deg
Head Tube Angle	67.5deg	67.5deg	67.5deg
Seat Tube Angle	74deg	74deg	74deg
Head Tube Length	119.7mm	129.4mm	139.2mm
Bottom Bracket Drop	44mm	44mm	44mm
Bottom Bracket Height	305.2mm	305.2mm	305.2mm
Chainstay Length	425mm	425mm	425mm
Chainstay Length Horizontal	422.7mm	422.7mm	422.7mm
Front-Center	690.7mm	716.6mm	742.6mm
Front-Center Horizontal	689.3mm	715.3mm	741.3mm
Wheelbase	1112mm	1138mm	1164mm
Fork Offset/Rake	42mm	42mm	42mm
Fork Length, Unknown	490mm	490mm	490mm
Trail	99.2mm very high	99.2mm very high	99.2mm very high
Mechanical Trail	91.6mm	91.6mm	91.6mm
Wheel Flop	35.1mm	35.1mm	35.1mm
Standover Height	749mm	784mm	819mm
Tire to Pedal Spindle	171.5mm 170 mm cranks	197.5mm 170 mm cranks	223.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	135.2mm 170 mm cranks	135.2mm 170 mm cranks	135.2mm 170 mm cranks

Published Sizing Recommendations

Height

155 cm

165 cm

160 cm

175 cm

173 cm

188 cm

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.jamisbikes.com/new_pdf/19_hijacka1.pdf