	S Lo	S Hi	M Lo	M Hi	L Lo	L Hi	XL Lo	XL Hi
Stack	613mm	606mm	622mm	615mm	631mm	624mm	640mm	633mm
Reach	440mm	449mm	460mm	469mm	480mm	488mm	500mm	508mm
Stack to Reach Ratio	1.39:1	1.35:1	1.35:1	1.31:1	1.31:1	1.28:1	1.28:1	1.25:1
Seat Tube Length, Unknown	390mm	390mm	420mm	420mm	450mm	450mm	470mm	470mm
Top Tube Length, Effective/Horizontal Unknown	568mm	567mm	594mm	593mm	631mm	630mm	656mm	655mm
Head Tube Angle	64deg	64.7deg	64deg	64.7deg	64deg	64.7deg	64deg	64.7deg
Effective Seat Tube Angle, Unknown	78.1deg	78.9deg	77.8deg	78.6deg	76.4deg	77.2deg	76.2deg	77deg
Head Tube Length	95mm	95mm	105mm	105mm	115mm	115mm	125mm	125mm
Bottom Bracket Drop	31.5mm	20.5mm	31.5mm	20.5mm	31.5mm	20.5mm	31.5mm	20.5mm
Bottom Bracket Height	343mm	354mm	343mm	354mm	343mm	354mm	343mm	354mm
Chainstay Length Horizontal	435mm	432mm	435mm	432mm	445mm	442mm	445mm	442mm
Front-Center	771.6mm	772.3mm	795.6mm	796.3mm	820.6mm	821.3mm	844.6mm	845.3mm
Front-Center Horizontal	771mm	772mm	795mm	796mm	820mm	821mm	844mm	845mm
Wheelbase	1206mm	1204mm	1230mm	1228mm	1265mm	1263mm	1289mm	1287mm
Fork Offset/Rake	42.6mm	41.8mm	42.2mm	41.6mm	42.8mm	43.2mm	42.4mm	42.9mm
Trail	135.3mm very high	130.8mm very high	135.7mm very high	131mm very high	135.1mm very high	129.3mm very high	135.4mm very high	129.6mm very high
Mechanical Trail	121.6mm	118.2mm	121.9mm	118.5mm	121.4mm	116.9mm	121.7mm	117.1mm
Wheel Flop	53.3mm	50.5mm	53.5mm	50.6mm	53.2mm	50mm	53.4mm	50.1mm
Standover Height	737mm	747mm	737mm	747mm	737mm	747mm	737mm	747mm
Tire to Pedal Spindle	227.1mm 170 mm cranks	227.8mm 170 mm cranks	251.1mm 170 mm cranks	251.8mm 170 mm cranks	276.1mm 170 mm cranks	276.8mm 170 mm cranks	300.1mm 170 mm cranks	300.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	173mm 170 mm cranks	184mm 170 mm cranks	173mm 170 mm cranks	184mm 170 mm cranks	173mm 170 mm cranks	184mm 170 mm cranks	173mm 170 mm cranks	184mm 170 mm cranks

	S Lo	S Hi	M Lo	M Hi	L Lo	L Hi	XL Lo	XL Hi
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
Tire Width	2.5in	2.5in	2.5in	2.5in	2.5in	2.5in	2.5in	2.5in
Tire Outer Diameter	749mm	749mm	749mm	749mm	749mm	749mm	749mm	749mm
Bike Length with Tires	1955mm	1953mm	1979mm	1977mm	2014mm	2012mm	2038mm	2036mm

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

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Full-suspension All-mountain/Enduro MTB

Source:https://www.devinci.com/en/bikes/mountain/troy-eagle-90-12s-night-crow/

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2026 Cycles Devinci Troy Eagle 90

Geometry

Eagle 90 Build

Stack and Reach vs. Category Trend