2025 Bulls Sonic SX Dakar Base

	S	M	L	XL
Stack	629mm	638mm	657mm	666mm
Reach	420mm	450mm	470mm	490mm
Stack to Reach Ratio	1.5:1	1.42:1	1.4:1	1.36:1
Seat Tube Length, Unknown	400mm	440mm	470mm	510mm
Top Tube Length, Effective/Horizontal Unknown	585mm	616mm	643mm	666mm
Top Tube Slope	24.9deg	20.7deg	18.9deg	15.6deg
Head Tube Angle	67deg	67deg	67deg	67deg
Seat Tube Angle	75deg	75deg	75deg	75deg
Head Tube Length	100mm	110mm	130mm	140mm
Bottom Bracket Drop	62.5mm	62.5mm	62.5mm	62.5mm
Bottom Bracket Height	305.5mm	305.5mm	305.5mm	305.5mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	440.6mm	440.6mm	440.6mm	440.6mm
Front-Center	720.1mm	754mm	781.9mm	805.8mm
Front-Center Horizontal	717.4mm	751.4mm	779.4mm	803.4mm
Wheelbase	1158mm	1192mm	1220mm	1244mm
Fork Offset/Rake	52.4mm	52.6mm	52.5mm	52.7mm
Trail	99.3mm very high	99.1mm very high	99.2mm very high	99mm very high
Mechanical Trail	91.4mm	91.2mm	91.3mm	91.1mm
Wheel Flop	35.7mm	35.6mm	35.7mm	35.6mm
Tire to Pedal Spindle	182.1mm 170 mm cranks	216mm 170 mm cranks	243.9mm 170 mm cranks	267.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	135.5mm 170 mm cranks	135.5mm 170 mm cranks	135.5mm 170 mm cranks	135.5mm 170 mm cranks

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:www.bulls-bikes.com

Geometry