2021 Author Ronin Original

	500	520	540	560	580
Stack	562mm	583mm	601mm	617mm	642mm
Reach	374mm	378mm	382mm	390mm	393mm
Stack to Reach Ratio	1.5:1	1.54:1	1.57:1	1.58:1	1.63:1
Seat Tube Length, C-T	500mm	520mm	540mm	560mm	580mm
Seat Tube Length, C-C	460mm	480mm	500mm	520mm	540mm
Top Tube Length, Effective/Horizontal HT Top	530mm	545mm	560mm	580mm	595mm
Top Tube Length, Actual C-C	515mm	529mm	542mm	560mm	573mm
Top Tube Slope	9deg	9.1deg	8.8deg	8.4deg	8.9deg
Head Tube Angle	70.5deg	71deg	71deg	71.5deg	72deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73deg	72.5deg
Head Tube Length	120mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	70mm	70mm	69mm	68mm	68mm
Bottom Bracket Height	279mm	279mm	280mm	281mm	281mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	419.4mm	419.5mm	419.5mm
Front-Center	599.9mm	605.9mm	616.5mm	626.2mm	630.2mm
Front-Center Horizontal	595.8mm	601.8mm	612.6mm	622.5mm	626.5mm
Wheelbase	1015mm	1021mm	1032mm	1042mm	1046mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	408mm	408mm	408mm	408mm	408mm
Trail	75.9mm high	72.6mm high	72.6mm high	69.3mm high	66.1mm high
Mechanical Trail	71.5mm	68.6mm	68.6mm	65.7mm	62.9mm
Wheel Flop	23.9mm	22.3mm	22.3mm	20.9mm	19.4mm
Tire to Pedal Spindle	80.9mm 170 mm cranks	86.9mm 170 mm cranks	97.5mm 170 mm cranks	107.2mm 170 mm cranks	111.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	109mm 170 mm cranks	109mm 170 mm cranks	110mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks

Published Sizing Recommendations

Height

160 cm

170 cm

168 cm

178 cm

176 cm

188 cm

186 cm

195 cm

193 cm

205 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://en.author.eu/adventure/gravel-bike/author-ronin-2021-ua42941602#!technicka-specifikace