2024 Ritchey Design Road Logic Base

	49cm	51cm	53cm	55cm	57cm	59cm
Stack	507mm	523mm	549mm	568mm	587mm	609mm
Reach	382mm	387mm	391mm	395mm	401mm	410mm
Stack to Reach Ratio	1.33:1	1.35:1	1.4:1	1.44:1	1.46:1	1.49:1
Seat Tube Length, C-T	465mm	485mm	505mm	525mm	545mm	565mm
Top Tube Length, Effective/Horizontal Center	518mm	532mm	548mm	563mm	575mm	590mm
Top Tube Slope	6.6deg	6.2deg	6.8deg	6.8deg	6.6deg	6.7deg
Head Tube Angle	72deg	72.5deg	73deg	73.5deg	73.5deg	73.5deg
Seat Tube Angle	75deg	74.5deg	74deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	115mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	72mm	72mm	72mm	70mm	70mm	70mm
Bottom Bracket Height	267mm	267mm	267mm	269mm	269mm	269mm
Chainstay Length	410mm	410mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	403.6mm	403.6mm	408.7mm	409.1mm	409.1mm	409.1mm
Front-Center	575.9mm	581.8mm	588.7mm	591.1mm	603mm	613mm
Front-Center Horizontal	571.4mm	577.4mm	584.3mm	587mm	599mm	609mm
Wheelbase	975mm	981mm	993mm	996mm	1008mm	1018mm
Fork Offset/Rake	46mm	46mm	46mm	43mm	43mm	43mm
Fork Length (On-Axis)	368mm	368mm	368mm	368mm	368mm	368mm
Fork Length (Axle-To-Crown)	371mm	371mm	371mm	371mm	371mm	371mm
Trail	61.8mm mid/neutral	58.7mm mid/neutral	55.5mm mid/neutral	55.6mm mid/neutral	55.6mm mid/neutral	55.6mm mid/neutral
Mechanical Trail	58.8mm	55.9mm	53.1mm	53.3mm	53.3mm	53.3mm
Wheel Flop	18.2mm	16.8mm	15.5mm	15.1mm	15.1mm	15.1mm
Standover Height	735mm	753mm	774mm	795mm	815mm	835mm
Tire to Pedal Spindle	66.9mm 170 mm cranks	72.8mm 170 mm cranks	79.7mm 170 mm cranks	82.1mm 170 mm cranks	94mm 170 mm cranks	104mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks

	49cm	51cm	53cm	55cm	57cm	59cm
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1653mm	1659mm	1671mm	1674mm	1686mm	1696mm

Published Sizing Recommendations

Height

152 cm

160 cm

157 cm

165 cm

163 cm

173 cm

170 cm

180 cm

179 cm

185 cm

183 cm

191 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.

Learn more about the Upright/Aggressive Scale

Category Trend

Endurance Road

Source:https://ritcheylogic.com/bike/frames/road-logic-frameset

Suggest Bike Edit

2024 Ritchey Design Road Logic Base

Geometry

Base Build

Published Sizing Recommendations

Stack and Reach vs. Category Trend