2025 Fairlight Cycles Strael 4.0 Base

	51R	51T	54R	54T	56R	56T	58R	58T	61R	61T
Stack	530mm	560mm	548mm	580mm	566mm	600mm	584mm	620mm	602mm	640mm
Reach	380mm	370mm	386mm	378mm	394mm	386mm	402mm	394mm	410mm	402mm
Stack to Reach Ratio	1.39:1	1.51:1	1.42:1	1.53:1	1.44:1	1.55:1	1.45:1	1.57:1	1.47:1	1.59:1
Seat Tube Length, C-T	510mm	514mm	532mm	536mm	545mm	557mm	564mm	575mm	583mm	592mm
Top Tube Length, Effective/Horizontal HT Top	533mm	532mm	546mm	548mm	562mm	564mm	575mm	578mm	588mm	592mm
Top Tube Slope	4.4deg	7.3deg	4deg	7.1deg	4.5deg	6.9deg	4.4deg	7deg	4.3deg	7.2deg
Head Tube Angle	71.5deg	71.5deg	72.25deg	72.25deg	73deg	73deg	73.25deg	73.25deg	73.25deg	73.25deg
Seat Tube Angle	74deg	74deg	73.75deg	73.75deg	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	106mm	137mm	124mm	157mm	140mm	176mm	158mm	195mm	177mm	216mm
Bottom Bracket Drop	74mm	74mm	72mm	72mm	72mm	72mm	72mm	72mm	72mm	72mm
Bottom Bracket Height	269mm	269mm	271mm	271mm	271mm	271mm	271mm	271mm	271mm	271mm
Chainstay Length	419mm	419mm	419mm	419mm	419mm	419mm	419mm	419mm	419mm	419mm
Chainstay Length Horizontal	412.4mm	412.4mm	412.8mm	412.8mm	412.8mm	412.8mm	412.8mm	412.8mm	412.8mm	412.8mm
Front-Center	585mm	585mm	590mm	592mm	596mm	599mm	607mm	610mm	621mm	624mm
Front-Center Horizontal	579.6mm	579.6mm	585.2mm	588.2mm	592.2mm	594.2mm	603.2mm	606.2mm	616.2mm	620.2mm
Wheelbase	992mm	992mm	998mm	1001mm	1005mm	1007mm	1016mm	1019mm	1029mm	1033mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	381mm	381mm	381mm	381mm	381mm	381mm	381mm	381mm	381mm	381mm
Trail	67.3mm high	67.3mm high	62.6mm mid/neutral	62.6mm mid/neutral	57.8mm mid/neutral	57.8mm mid/neutral	56.2mm mid/neutral	56.2mm mid/neutral	56.2mm mid/neutral	56.2mm mid/neutral
Mechanical Trail	63.8mm	63.8mm	59.6mm	59.6mm	55.3mm	55.3mm	53.9mm	53.9mm	53.9mm	53.9mm
Wheel Flop	20.3mm	20.3mm	18.2mm	18.2mm	16.2mm	16.2mm	15.5mm	15.5mm	15.5mm	15.5mm
Standover Height	758mm	772mm	780mm	795mm	794mm	815mm	812mm	833mm	830mm	851mm
Tire to Pedal Spindle	72mm 170 mm cranks	72mm 170 mm cranks	77mm 170 mm cranks	79mm 170 mm cranks	83mm 170 mm cranks	86mm 170 mm cranks	94mm 170 mm cranks	97mm 170 mm cranks	108mm 170 mm cranks	111mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks

	51R	51T	54R	54T	56R	56T	58R	58T	61R	61T
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	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	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Outer Diameter	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm
Bike Length with Tires	1678mm	1678mm	1684mm	1687mm	1691mm	1693mm	1702mm	1705mm	1715mm	1719mm

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://fairlightcycles.com/strael-4-0/?v=5435c69ed3bc

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2025 Fairlight Cycles Strael 4.0 Base

Geometry

Base Build

Stack and Reach vs. Category Trend