1999 Koga Miyata Roadrunner S Base

	50	60	63
Stack	475.8mm	568mm	596.3mm
Reach	369.1mm	376.4mm	377.7mm
Stack to Reach Ratio	1.29:1	1.51:1	1.58:1
Seat Tube Length, C-T	500mm	600mm	630mm
Top Tube Length, Effective/Horizontal Center	525mm	572mm	583mm
Top Tube Length, Actual C-C	525mm	572mm	583mm
Top Tube Slope	0deg	0deg	0deg
Head Tube Angle	70deg	71deg	71deg
Seat Tube Angle	72deg	71deg	71deg
Bottom Bracket Drop	54mm	58mm	59mm
Bottom Bracket Height	294mm	290mm	289mm
Chainstay Length	450mm	450mm	450mm
Chainstay Length Horizontal	446.8mm	446.3mm	446.1mm
Front-Center	601mm	621mm	626mm
Front-Center Horizontal	598.3mm	618.8mm	624.9mm
Wheelbase	1045mm	1065mm	1071mm
Fork Offset/Rake	50mm	50mm	50mm
Trail	73.5mm high	66.9mm high	66.9mm high
Mechanical Trail	69mm	63.3mm	63.3mm
Wheel Flop	23.6mm	20.6mm	20.6mm
Tire to Pedal Spindle	83mm 170 mm cranks	103mm 170 mm cranks	108mm 170 mm cranks
Pedal Spindle to Ground Clearance	124mm 170 mm cranks	120mm 170 mm cranks	119mm 170 mm cranks

	50	60	63
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	37mm	37mm	37mm
Tire Outer Diameter	696mm	696mm	696mm
Bike Length with Tires	1741mm	1761mm	1767mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Off-road Touring

Source:https://www.koga.com/fr/service/brochures/2000-1976.htm, https://www.restoration.bike/bike-catalogs/koga-miyata-catalogs/, https://drive.google.com/file/d/1dDZI3a7k9sQtIKl-6hnsOt21w6m582-K/view?usp=sharing

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1999 Koga Miyata Roadrunner S Base

Geometry

Base Build

Stack and Reach vs. Category Trend