2019 Soma Fabrications Rush Base

	49	51	53	55	57	59	61
Stack	487mm	495mm	514mm	534mm	553mm	570mm	594mm
Reach	398mm	396mm	399mm	409mm	414mm	422mm	426mm
Stack to Reach Ratio	1.22:1	1.25:1	1.29:1	1.31:1	1.34:1	1.35:1	1.39:1
Seat Tube Length, C-T	490mm	510mm	530mm	550mm	570mm	590mm	610mm
Top Tube Length, Effective/Horizontal Center	515mm	525mm	536mm	551mm	561mm	578mm	585mm
Top Tube Slope	1.4deg	0.1deg	0.1deg	0.2deg	0.2deg	0deg	0.5deg
Head Tube Angle	73.2deg	74deg	74deg	74.3deg	74.3deg	75deg	75deg
Seat Tube Angle	75.5deg	75.5deg	75.3deg	75.3deg	75.3deg	75deg	75deg
Head Tube Length	85mm	90mm	110mm	130mm	150mm	165mm	185mm
Bottom Bracket Drop	58mm	58mm	58mm	58mm	58mm	58mm	58mm
Bottom Bracket Height	276mm	276mm	276mm	276mm	276mm	276mm	276mm
Chainstay Length	388mm	388mm	388mm	388mm	388mm	388mm	388mm
Chainstay Length Horizontal	383.6mm	383.6mm	383.6mm	383.6mm	383.6mm	383.6mm	383.6mm
Front-Center	564mm	564mm	572mm	585mm	596mm	602mm	611mm
Front-Center Horizontal	560.4mm	560.4mm	569.4mm	582.4mm	592.4mm	598.4mm	609.4mm
Wheelbase	944mm	944mm	953mm	966mm	976mm	982mm	993mm
Fork Offset/Rake	38mm	38mm	38mm	38mm	38mm	38mm	38mm
Fork Length (Axle-To-Crown)	365mm	365mm	365mm	365mm	365mm	365mm	365mm
Trail	61.2mm mid/neutral	56.2mm mid/neutral	56.2mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral	50.2mm mid/neutral	50.2mm mid/neutral
Mechanical Trail	58.5mm	54.1mm	54.1mm	52.4mm	52.4mm	48.5mm	48.5mm
Wheel Flop	16.9mm	14.9mm	14.9mm	14.2mm	14.2mm	12.5mm	12.5mm
Standover Height	746.8mm	772.2mm	787.4mm	807.7mm	825.5mm	845.8mm	861.1mm
Tire to Pedal Spindle	60mm 170 mm cranks	60mm 170 mm cranks	68mm 170 mm cranks	81mm 170 mm cranks	92mm 170 mm cranks	98mm 170 mm cranks	107mm 170 mm cranks
Pedal Spindle to Ground Clearance	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks	106mm 170 mm cranks

	49	51	53	55	57	59	61
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	23mm	23mm	23mm	23mm	23mm	23mm	23mm
Tire Width Max	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Outer Diameter	668mm	668mm	668mm	668mm	668mm	668mm	668mm
Bike Length with Tires	1612mm	1612mm	1621mm	1634mm	1644mm	1650mm	1661mm

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

Track/Fixed-gear

Source:https://www.somafab.com/archives/product/rush

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2019 Soma Fabrications Rush Base

Geometry

Base Build

Stack and Reach vs. Category Trend