2025 Priority Bicycles Gemini Al

	S	M	L	XL
Stack	531mm	571mm	600mm	623mm
Reach	366mm	379mm	393mm	400mm
Stack to Reach Ratio	1.45:1	1.51:1	1.53:1	1.56:1
Seat Tube Length, C-T	430mm	480mm	510mm	540mm
Top Tube Length, Effective/Horizontal HT Top	535mm	550mm	572mm	586mm
Top Tube Slope	13.7deg	12.1deg	11.7deg	10.8deg
Head Tube Angle	70deg	70deg	70deg	70deg
Seat Tube Angle	72.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	115mm	145mm	175mm	200mm
Bottom Bracket Drop	80mm	80mm	80mm	80mm
Bottom Bracket Height	271mm	271mm	271mm	271mm
Chainstay Length	437mm	437mm	437mm	437mm
Chainstay Length Horizontal	429.6mm	429.6mm	429.6mm	429.6mm
Front-Center	602.7mm	620.6mm	644.4mm	660.3mm
Front-Center Horizontal	597.4mm	615.4mm	639.4mm	655.4mm
Wheelbase	1027mm	1045mm	1069mm	1085mm
Fork Offset/Rake	48mm	48mm	48mm	48mm
Fork Length, Unknown	400mm	400mm	400mm	400mm
Trail	76.7mm high	76.7mm high	76.7mm high	76.7mm high
Mechanical Trail	72.1mm	72.1mm	72.1mm	72.1mm
Wheel Flop	24.6mm	24.6mm	24.6mm	24.6mm
Standover Height	27.5mm	29.5mm	31.5mm	32.5mm
Tire to Pedal Spindle	81.7mm 170 mm cranks	99.6mm 170 mm cranks	118.4mm 175 mm cranks	134.3mm 175 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	101mm 170 mm cranks	96mm 175 mm cranks	96mm 175 mm cranks

Published Sizing Recommendations

Height

5 ft 2 in

5 ft 6 in

5 ft 10 in

6 ft 1 in

6 ft 0 in

6 ft 4 in

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.prioritybicycles.com/products/gemini