2024 Ron's Bikes Aluminus Maximus Base

	51cm	53cm	55cm	57cm	60cm
Stack	560mm	575mm	590mm	605mm	630mm
Reach	364mm	380mm	384mm	395mm	412mm
Stack to Reach Ratio	1.54:1	1.51:1	1.54:1	1.53:1	1.53:1
Seat Tube Length, Unknown	400mm	430mm	460mm	515mm	535mm
Top Tube Length, Effective/Horizontal Center	522mm	600mm	561mm	576mm	600mm
Top Tube Slope	20.3deg	18deg	16.1deg	11.6deg	11.7deg
Head Tube Angle	70deg	71deg	71deg	71deg	71deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73.5deg	73.5deg
Head Tube Length	105mm	116mm	132mm	148mm	174mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	283mm	283mm	283mm	283mm	283mm
Chainstay Length	430mm	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	424.3mm	424.3mm	424.3mm	424.3mm	424.3mm
Front-Center	599.7mm	610.8mm	619.9mm	636mm	661.4mm
Front-Center Horizontal	595.6mm	606.8mm	615.9mm	632.1mm	657.7mm
Wheelbase	1019.8mm	1031mm	1040.2mm	1056.4mm	1082mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	423mm	423mm	423mm	423mm	423mm
Trail	75.3mm high	68.7mm high	68.7mm high	68.7mm high	68.7mm high
Mechanical Trail	70.7mm	64.9mm	64.9mm	64.9mm	64.9mm
Wheel Flop	24.2mm	21.1mm	21.1mm	21.1mm	21.1mm
Standover Height	763mm	783mm	805mm	838mm	—
Tire to Pedal Spindle	76.7mm 170 mm cranks	87.8mm 170 mm cranks	96.9mm 170 mm cranks	113mm 170 mm cranks	138.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 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://ronsbikes.com/products/aluminus-maximus

Geometry