2025 OnebyESU JFF #901 Rigid fork

	XS	S	M	L
Stack	537.5mm	538.5mm	567.7mm	579.1mm
Reach	351mm	358.7mm	361.6mm	367mm
Stack to Reach Ratio	1.53:1	1.5:1	1.57:1	1.58:1
Seat Tube Length, C-T	400mm	460mm	510mm	540mm
Top Tube Length, Effective/Horizontal HT Top	495mm	503mm	535mm	555mm
Top Tube Slope	18.4deg	11.2deg	8.9deg	7deg
Head Tube Angle	71deg	71deg	71.5deg	72deg
Seat Tube Angle	75deg	75deg	73deg	72deg
Head Tube Length	100mm	100mm	130mm	140mm
Bottom Bracket Drop	71mm	72mm	71mm	71mm
Bottom Bracket Height	282mm	281mm	282mm	282mm
Chainstay Length	428mm	428mm	428mm	428mm
Chainstay Length Horizontal	422.1mm	421.9mm	422.1mm	422.1mm
Front-Center	572.1mm	579.9mm	582.7mm	586.8mm
Front-Center Horizontal	567.7mm	575.4mm	578.3mm	582.5mm
Wheelbase	989.7mm	997.3mm	1000.4mm	1004.5mm
Fork Offset/Rake	53mm	53mm	48.2mm	48.2mm
Fork Length (Axle-To-Crown)	398mm	398mm	396mm	396mm
Trail	65.5mm high	65.5mm high	67.3mm high	64mm mid/neutral
Mechanical Trail	61.9mm	61.9mm	63.8mm	60.9mm
Wheel Flop	20.2mm	20.2mm	20.3mm	18.8mm
Standover Height	679.8mm	726.2mm	771.5mm	794.6mm
Tire to Pedal Spindle	49.1mm 170 mm cranks	56.9mm 170 mm cranks	59.7mm 170 mm cranks	63.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	112mm 170 mm cranks	111mm 170 mm cranks	112mm 170 mm cranks	112mm 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:https://onebyesu.tokyo-san-esu.com/category/frames/jff_901.html, https://onebyesu.tokyo-san-esu.com/category/forks/gbd15_th.html

Geometry