2025 BiXS Core 101

	S	M	L	XL
Stack	608mm	608mm	622mm	636mm
Reach	405mm	430mm	455mm	480mm
Stack to Reach Ratio	1.5:1	1.41:1	1.37:1	1.33:1
Seat Tube Length, C-T	400mm	430mm	472mm	520mm
Top Tube Length, Effective/Horizontal HT Top	579mm	603mm	633mm	662mm
Top Tube Slope	23.5deg	19.5deg	16.1deg	12.3deg
Head Tube Angle	68.5deg	68.8deg	68.5deg	68.5deg
Seat Tube Angle	74deg	74deg	74deg	74deg
Head Tube Length	95mm	95mm	110mm	125mm
Bottom Bracket Drop	63mm	63mm	63mm	63mm
Bottom Bracket Height	307.7mm	307.7mm	307.7mm	307.7mm
Chainstay Length	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	425.4mm	425.4mm	425.4mm	425.4mm
Front-Center	668.6mm	692.5mm	723.4mm	753.3mm
Front-Center Horizontal	665.6mm	689.6mm	720.6mm	750.6mm
Wheelbase	1091mm	1115mm	1146mm	1176mm
Fork Offset/Rake	44mm	44mm	44mm	44mm
Fork Length (Axle-To-Crown)	507mm	507mm	507mm	507mm
Trail	98.7mm very high	96.6mm very high	98.7mm very high	98.7mm very high
Mechanical Trail	91.9mm	90.1mm	91.9mm	91.9mm
Wheel Flop	33.7mm	32.6mm	33.7mm	33.7mm
Tire to Pedal Spindle	127.9mm 170 mm cranks	151.8mm 170 mm cranks	182.7mm 170 mm cranks	212.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	137.7mm 170 mm cranks	137.7mm 170 mm cranks	137.7mm 170 mm cranks	137.7mm 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://www.bixs.com/products/core-101

Geometry