2020 Isaac Cycle Meson Base

	49	52	55	58	61
Stack	533.5mm	560mm	578.9mm	598.5mm	617mm
Reach	362.5mm	372mm	388.5mm	395mm	410mm
Stack to Reach Ratio	1.47:1	1.51:1	1.49:1	1.52:1	1.5:1
Seat Tube Length, C-T	450mm	490mm	525mm	550mm	570mm
Top Tube Length, Effective/Horizontal Center	516mm	538mm	560mm	572mm	592mm
Top Tube Slope	11.7deg	10deg	8deg	7.4deg	7deg
Head Tube Angle	73.3deg	73.3deg	73.3deg	73.3deg	73.3deg
Seat Tube Angle	74deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	140mm	160mm	180mm	200mm	220mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm	68mm
Bottom Bracket Height	271mm	271mm	271mm	271mm	271mm
Chainstay Length	408.5mm	408.5mm	408.5mm	408.5mm	408.5mm
Chainstay Length Horizontal	402.8mm	402.8mm	402.8mm	402.8mm	402.8mm
Front-Center	575.2mm	575.2mm	593.6mm	607.8mm	627.9mm
Front-Center Horizontal	571.2mm	571.2mm	589.7mm	604mm	624.2mm
Wheelbase	974mm	974mm	992.5mm	1006.8mm	1027mm
Fork Offset/Rake	66.1mm	49.4mm	45.9mm	47.7mm	47.4mm
Trail	32.7mm low	50.1mm mid/neutral	53.8mm mid/neutral	51.9mm mid/neutral	52.2mm mid/neutral
Mechanical Trail	31.3mm	48mm	51.5mm	49.7mm	50mm
Wheel Flop	9mm	13.8mm	14.8mm	14.3mm	14.4mm
Tire to Pedal Spindle	66.2mm 170 mm cranks	66.2mm 170 mm cranks	84.6mm 170 mm cranks	98.8mm 170 mm cranks	118.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 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://geometrygeeks.bike/bike/isaac-meson-2020/

Geometry