	size XXS	size XS	size S	size M	size L	size XL
Stack	510mm	525mm	542mm	559mm	578mm	597mm
Reach	352mm	362mm	366mm	370mm	375mm	380mm
Stack to Reach Ratio	1.45:1	1.45:1	1.48:1	1.51:1	1.54:1	1.57:1
Seat Tube Length, C-T	450mm	470mm	490mm	520mm	540mm	560mm
Top Tube Length, Unknown	490.2mm	507.2mm	517.9mm	530.4mm	546.3mm	562.6mm
Top Tube Slope	9.2deg	8.4deg	8deg	6.6deg	6.5deg	6.5deg
Head Tube Angle	70.2deg	71.3deg	71.6deg	72.1deg	72.4deg	72.4deg
Seat Tube Angle	74.8deg	74.5deg	74.3deg	74deg	73.5deg	73deg
Head Tube Length	107.3mm	118.9mm	135.7mm	153.1mm	171.9mm	191.8mm
Bottom Bracket Drop	78mm	78mm	78mm	75mm	75mm	75mm
Bottom Bracket Height	263mm	263mm	263mm	266mm	266mm	266mm
Chainstay Length	415mm	415mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	407.6mm	407.6mm	407.6mm	408.2mm	408.2mm	408.2mm
Front-Center	569.6mm	574.8mm	581.6mm	581.6mm	589.6mm	600.5mm
Front-Center Horizontal	564.2mm	569.5mm	576.3mm	576.7mm	584.8mm	595.8mm
Wheelbase	971.8mm	977.1mm	983.9mm	984.9mm	993mm	1004mm
Fork Offset/Rake	53mm	53mm	53mm	48mm	48mm	48mm
Fork Length, Unknown	370mm	370mm	370mm	370mm	370mm	370mm
Trail	66.4mm high	59.5mm mid/neutral	57.6mm mid/neutral	59.7mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral
Mechanical Trail	62.5mm	56.3mm	54.6mm	56.8mm	55.1mm	55.1mm
Wheel Flop	21.2mm	18.1mm	17.3mm	17.5mm	16.7mm	16.7mm
Standover Height	715mm	732.5mm	749.2mm	775.6mm	791.6mm	805.2mm
Tire to Pedal Spindle	58.6mm 170 mm cranks	63.8mm 170 mm cranks	70.6mm 170 mm cranks	70.6mm 170 mm cranks	78.6mm 170 mm cranks	89.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	93mm 170 mm cranks	93mm 170 mm cranks	93mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks

	size XXS	size XS	size S	size M	size L	size XL
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	30mm	30mm	30mm	30mm	30mm
Tire Outer Diameter	682mm	682mm	682mm	682mm	682mm	682mm
Bike Length with Tires	1653.8mm	1659.1mm	1665.9mm	1666.9mm	1675mm	1686mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Performance Road

Source:https://www.isaac-cycle.com/en_US/p/bike-vitron-navy-blue-l-105-r7100--e1800/75456/

Suggest Bike Edit

2025 Isaac Cycle Vitron Base

Geometry

Base Build

Stack and Reach vs. Category Trend