2026 Specialized Allez Base

	44	49	58	52	61	54	56
Stack	552mm	569mm	519mm	590mm	536mm	610mm	643mm
Reach	356mm	359mm	386mm	364mm	392mm	370mm	378mm
Stack to Reach Ratio	1.55:1	1.58:1	1.34:1	1.62:1	1.37:1	1.65:1	1.7:1
Seat Tube Length, Unknown	430mm	460mm	550mm	490mm	580mm	510mm	530mm
Top Tube Length, Effective/Horizontal Center	493mm	500mm	569mm	530mm	586mm	541mm	556mm
Top Tube Slope	16.3deg	14.6deg	-0.8deg	13.5deg	-2deg	13.2deg	14.3deg
Head Tube Angle	69.5deg	70.5deg	73deg	71deg	73deg	72deg	72.5deg
Seat Tube Angle	75.25deg	75.25deg	73.25deg	73.25deg	73.25deg	73.25deg	73.25deg
Head Tube Length	123.9mm	138.3mm	96.4mm	158mm	116.5mm	176.3mm	207.8mm
Bottom Bracket Drop	77mm	77mm	74.5mm	77mm	74.5mm	76mm	76mm
Bottom Bracket Height	264mm	264mm	266.5mm	264mm	266.5mm	265mm	265mm
Chainstay Length	420mm	420mm	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	412.9mm	412.9mm	418.4mm	418mm	418.4mm	418.2mm	418.2mm
Front-Center	576mm	577mm	603mm	583mm	619mm	585mm	594mm
Front-Center Horizontal	571.1mm	571.1mm	598.6mm	577mm	614.6mm	579.9mm	589.9mm
Wheelbase	984mm	984mm	1017mm	995mm	1033mm	998mm	1008mm
Fork Offset/Rake	35.2mm	35.7mm	73.3mm	34.4mm	77.9mm	34.6mm	31.6mm
Fork Length, Unknown	378mm	378mm	378mm	378mm	378mm	378mm	378mm
Trail	90mm very high	82.9mm very high	27.6mm very low	81mm very high	22.8mm very low	74.5mm high	74.4mm high
Mechanical Trail	84.3mm	78.1mm	26.4mm	76.6mm	21.8mm	70.8mm	71mm
Wheel Flop	29.5mm	26.1mm	7.7mm	24.9mm	6.4mm	21.9mm	21.4mm
Standover Height	715mm	739mm	821mm	761mm	852mm	781mm	801mm
Tire to Pedal Spindle	70mm 165 mm cranks	71mm 165 mm cranks	87mm 175 mm cranks	72mm 170 mm cranks	103mm 175 mm cranks	71.5mm 172.5 mm cranks	80.5mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	99mm 165 mm cranks	99mm 165 mm cranks	91.5mm 175 mm cranks	94mm 170 mm cranks	91.5mm 175 mm cranks	92.5mm 172.5 mm cranks	92.5mm 172.5 mm cranks

	44	49	58	52	61	54	56
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
Tire Width	30mm	30mm	30mm	30mm	30mm	30mm	30mm
Tire Width Max	35mm	35mm	35mm	35mm	35mm	35mm	35mm
Tire Outer Diameter	682mm	682mm	682mm	682mm	682mm	682mm	682mm
Bike Length with Tires	1666mm	1666mm	1699mm	1677mm	1715mm	1680mm	1690mm
Crank Length	165mm	165mm	175mm	170mm	175mm	172.5mm	172.5mm
Handlebar Width	360mm	380mm	440mm	400mm	440mm	420mm	420mm
Stem Length	70mm	80mm	110mm	90mm	110mm	100mm	100mm

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

Endurance Road

Source:https://www.specialized.com/us/en/allez/p/4221808?color=5444474-4221808

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2026 Specialized Allez Base

Geometry

Base Build

Stack and Reach vs. Category Trend