1991 Bridgestone Cycle Co. MB-0 Base

	42cm	46cm	49cm	52cm	55cm
Stack	415mm	443mm	470mm	497mm	527mm
Reach	442mm	443mm	444mm	441mm	442mm
Stack to Reach Ratio	0.94:1	1:1	1.06:1	1.13:1	1.19:1
Seat Tube Length, C-T	420mm	460mm	490mm	520mm	550mm
Seat Tube Length, C-C	394mm	432mm	462mm	492mm	522mm
Top Tube Length, Actual C-C	550mm	565mm	575mm	585mm	595mm
Top Tube Slope	1.3deg	0.2deg	0deg	0deg	0.1deg
Head Tube Angle	71.5deg	72deg	72deg	72deg	72deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73deg	73deg
Head Tube Length	0.9mm	28.8mm	57.2mm	85.6mm	117.1mm
Bottom Bracket Drop	40mm	40mm	40mm	40mm	40mm
Bottom Bracket Height	294mm	294mm	294mm	294mm	294mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	423.1mm	423.1mm	423.1mm	423.1mm	423.1mm
Front-Center	619mm	624mm	628mm	628mm	635mm
Front-Center Horizontal	617.9mm	622.9mm	626.9mm	626.9mm	633.9mm
Wheelbase	1041mm	1046mm	1050mm	1050mm	1057mm
Fork Offset/Rake	40mm	40mm	40mm	40mm	40mm
Fork Length, Unknown	390mm	390mm	390mm	390mm	390mm
Trail	69.6mm high	66.5mm high	66.5mm high	66.5mm high	66.5mm high
Mechanical Trail	66mm	63.2mm	63.2mm	63.2mm	63.2mm
Wheel Flop	20.9mm	19.5mm	19.5mm	19.5mm	19.5mm
Standover Height	707mm	737mm	759mm	782mm	808mm
Tire to Pedal Spindle	115mm 170 mm cranks	120mm 170 mm cranks	124mm 170 mm cranks	124mm 170 mm cranks	131mm 170 mm cranks
Pedal Spindle to Ground Clearance	124mm 170 mm cranks	124mm 170 mm cranks	124mm 170 mm cranks	124mm 170 mm cranks	124mm 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.

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Source:https://farm4.static.flickr.com/3282/2720819358_e2a02f0cea_o.jpg

Geometry