2022 Boken Miru Base

Somewhat aggressive stack and reachvs category

	52cm - XS	54cm - S	55cm - M	57cm - L	59cm - XL
Stack	531mm	552mm	568mm	589mm	608mm
Reach	384mm	386mm	390mm	395mm	404mm
Stack to Reach Ratio	1.38:1	1.43:1	1.46:1	1.49:1	1.5:1
Seat Tube Length, C-T	470mm	490mm	510mm	530mm	550mm
Top Tube Length, Effective/Horizontal Center	520mm	540mm	550mm	570mm	590mm
Top Tube Slope	8.6deg	8.7deg	8.3deg	8.4deg	8.3deg
Head Tube Angle	70deg	71deg	71.5deg	72deg	72deg
Seat Tube Angle	76deg	75deg	74deg	73.5deg	73deg
Head Tube Length	100mm	120mm	135mm	155mm	175mm
Bottom Bracket Drop	70.9mm	70.9mm	74.2mm	71mm	67.7mm
Bottom Bracket Height	295.1mm	295.1mm	291.8mm	295mm	298.3mm
Chainstay Length	430mm	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	424.1mm	424.1mm	423.6mm	424.1mm	424.6mm
Front-Center	612mm	612mm	608mm	618mm	632mm
Front-Center Horizontal	607.9mm	607.9mm	603.5mm	613.9mm	628.4mm
Wheelbase	1032mm	1032mm	1027mm	1038mm	1053mm
Fork Offset/Rake	53mm	53.2mm	45.7mm	50mm	50mm
Trail	76.8mm high	69.8mm high	74.2mm high	66.4mm high	66.4mm high
Mechanical Trail	72.2mm	66mm	70.4mm	63.1mm	63.1mm
Wheel Flop	24.7mm	21.5mm	22.3mm	19.5mm	19.5mm
Tire to Pedal Spindle	76mm 170 mm cranks	76mm 170 mm cranks	72mm 170 mm cranks	82mm 170 mm cranks	96mm 170 mm cranks
Pedal Spindle to Ground Clearance	125.1mm 170 mm cranks	125.1mm 170 mm cranks	121.8mm 170 mm cranks	125mm 170 mm cranks	128.3mm 170 mm cranks

Published Sizing Recommendations

Height

160 cm

168 cm

165 cm

175 cm

172 cm

184 cm

181 cm

188 cm

186 cm

193 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.7hundred.co.uk/bikes/bike-frames/boken-miru-titanium-gravel-and-adventure-frame-fork-sunset-anodised__61441