2025 Boskey Overlander Base

	S	M	L	XL
Stack	540mm	550mm	573mm	602mm
Reach	369mm	375mm	385mm	400mm
Stack to Reach Ratio	1.46:1	1.47:1	1.49:1	1.51:1
Seat Tube Length, C-T	440mm	490mm	530mm	570mm
Top Tube Length, Effective/Horizontal Unknown	524mm	533mm	549mm	572mm
Top Tube Slope	13.4deg	8.8deg	6.8deg	5.5deg
Head Tube Angle	71deg	71deg	71deg	71deg
Seat Tube Angle	74deg	74deg	74deg	74deg
Head Tube Length	125mm	135mm	160mm	190mm
Bottom Bracket Drop	55mm	55mm	55mm	55mm
Bottom Bracket Height	291mm	291mm	291mm	291mm
Chainstay Length	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	446.6mm	446.6mm	446.6mm	446.6mm
Front-Center	587mm	604.9mm	626.8mm	636.8mm
Front-Center Horizontal	584.4mm	602.4mm	624.4mm	634.4mm
Wheelbase	1031mm	1049mm	1071mm	1081mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Trail	71.5mm high	71.5mm high	71.5mm high	71.5mm high
Mechanical Trail	67.7mm	67.7mm	67.7mm	67.7mm
Wheel Flop	22mm	22mm	22mm	22mm
Standover Height	670mm	790mm	825mm	845mm
Tire to Pedal Spindle	71mm 170 mm cranks	88.9mm 170 mm cranks	110.8mm 170 mm cranks	120.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	121mm 170 mm cranks	121mm 170 mm cranks	121mm 170 mm cranks	121mm 170 mm cranks

Published Sizing Recommendations

Height

150 cm

167 cm

168 cm

175 cm

176 cm

182 cm

183 cm

188 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.

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