2017 Brand-X RD-01 Base

	50cm	52cm	54cm	56cm	58cm
Stack	525mm	541mm	551mm	565mm	566mm
Reach	375mm	378mm	384mm	385mm	407mm
Stack to Reach Ratio	1.4:1	1.43:1	1.43:1	1.47:1	1.39:1
Seat Tube Length, C-T	460mm	480mm	500mm	520mm	540mm
Top Tube Length, Effective/Horizontal Center	523mm	535mm	547mm	558mm	580mm
Top Tube Length, Actual C-C	506mm	516mm	528mm	539mm	564mm
Top Tube Slope	10deg	10.9deg	9.9deg	8.9deg	6.6deg
Head Tube Angle	72.5deg	73deg	73deg	73deg	73deg
Seat Tube Angle	74.3deg	73.8deg	73.5deg	73deg	73deg
Head Tube Length	120mm	135mm	145mm	160mm	160mm
Bottom Bracket Drop	65mm	65mm	65mm	65mm	65mm
Bottom Bracket Height	274mm	274mm	274mm	274mm	274mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	420mm	420mm	420mm	420mm	420mm
Front-Center	571.7mm	573.7mm	582.6mm	588.6mm	610.5mm
Front-Center Horizontal	568mm	570mm	579mm	585mm	607mm
Wheelbase	988mm	990mm	999mm	1005mm	1027mm
Fork Offset/Rake	45.7mm	44.4mm	44.4mm	45.1mm	44.8mm
Trail	58.9mm mid/neutral	57.2mm mid/neutral	57.2mm mid/neutral	56.5mm mid/neutral	56.8mm mid/neutral
Mechanical Trail	56.2mm	54.7mm	54.7mm	54mm	54.3mm
Wheel Flop	16.9mm	16mm	16mm	15.8mm	15.9mm
Tire to Pedal Spindle	62.7mm 170 mm cranks	64.7mm 170 mm cranks	73.6mm 170 mm cranks	79.6mm 170 mm cranks	101.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks

Published Sizing Recommendations

Height

160 cm

165 cm

170 cm

175 cm

180 cm

185 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.chainreactioncycles.com/brand-x-rd-01-road-frame-and-carbon-fork-2019/rp-prod130456