	46	49	52	54	56	58	60	62	64
Stack	530mm	541mm	550mm	567mm	581mm	597mm	610mm	629mm	648mm
Reach	378mm	380mm	383mm	387mm	394mm	399mm	409mm	419mm	427mm
Stack to Reach Ratio	1.4:1	1.42:1	1.44:1	1.47:1	1.47:1	1.5:1	1.49:1	1.5:1	1.52:1
Seat Tube Length, C-T	440mm	460mm	480mm	500mm	515mm	530mm	545mm	565mm	585mm
Top Tube Length, Effective/Horizontal HT Top	510mm	520mm	530mm	545mm	555mm	565mm	585mm	600mm	620mm
Top Tube Slope	12deg	11deg	9.7deg	9.4deg	9.2deg	9.2deg	8.8deg	8.6deg	8.4deg
Head Tube Angle	71deg	71.5deg	71.5deg	72deg	72deg	72.5deg	72.5deg	72.5deg	72.5deg
Seat Tube Angle	75.5deg	75deg	74.5deg	74deg	73.5deg	73.5deg	73.5deg	73deg	73deg
Head Tube Length	120mm	130mm	140mm	155mm	170mm	185mm	200mm	220mm	240mm
Bottom Bracket Drop	73mm	73mm	72mm	72mm	71mm	71mm	70mm	70mm	70mm
Bottom Bracket Height	270mm	270mm	271mm	271mm	272mm	272mm	273mm	273mm	273mm
Chainstay Length	422mm	422mm	422mm	422mm	422mm	422mm	422mm	422mm	422mm
Chainstay Length Horizontal	415.6mm	415.6mm	415.8mm	415.8mm	416mm	416mm	416.2mm	416.2mm	416.2mm
Front-Center	589mm	590mm	596mm	597mm	608mm	613mm	628mm	643mm	657mm
Front-Center Horizontal	584.4mm	585.4mm	591.2mm	593.2mm	604mm	609mm	623.9mm	638.9mm	653.9mm
Wheelbase	1000mm	1001mm	1007mm	1009mm	1020mm	1025mm	1040mm	1055mm	1070mm
Fork Offset/Rake	51mm	51mm	51mm	47mm	47mm	47mm	47mm	47mm	47mm
Fork Length (Axle-To-Crown)	380mm	380mm	380mm	380mm	380mm	380mm	380mm	380mm	380mm
Trail	64.2mm mid/neutral	61mm mid/neutral	61mm mid/neutral	62mm mid/neutral	62mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral
Mechanical Trail	60.7mm	57.8mm	57.8mm	59mm	59mm	56.1mm	56.1mm	56.1mm	56.1mm
Wheel Flop	19.8mm	18.4mm	18.4mm	18.2mm	18.2mm	16.9mm	16.9mm	16.9mm	16.9mm
Standover Height	675mm	700mm	725mm	750mm	775mm	800mm	825mm	850mm	875mm
Tire to Pedal Spindle	81mm 165 mm cranks	82mm 165 mm cranks	83mm 170 mm cranks	84mm 170 mm cranks	92.5mm 172.5 mm cranks	97.5mm 172.5 mm cranks	112.5mm 172.5 mm cranks	125mm 175 mm cranks	139mm 175 mm cranks
Pedal Spindle to Ground Clearance	105mm 165 mm cranks	105mm 165 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	99.5mm 172.5 mm cranks	99.5mm 172.5 mm cranks	100.5mm 172.5 mm cranks	98mm 175 mm cranks	98mm 175 mm cranks

	46	49	52	54	56	58	60	62	64
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
Tire Width	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Width Max	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm	45mm
Tire Outer Diameter	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm	686mm
Bike Length with Tires	1686mm	1687mm	1693mm	1695mm	1706mm	1711mm	1726mm	1741mm	1756mm
Crank Length	165mm	165mm	170mm	170mm	172.5mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	380mm	380mm	380mm	400mm	400mm	400mm	420mm	420mm	420mm
Stem Length	80mm	90mm	100mm	100mm	100mm	100mm	100mm	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://blackheartbikeco.com/pages/road-plus-ti

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2026 BlackHeart Bike Company Road Plus Ti Base

Geometry

Base Build

Stack and Reach vs. Category Trend