2017 All-City Cycles Thunderdome Base

	46cm	49cm	52cm	55cm	58cm	61cm
Stack	505mm	525mm	545mm	566mm	590mm	612mm
Reach	386mm	394mm	399mm	408mm	421mm	435mm
Stack to Reach Ratio	1.31:1	1.33:1	1.37:1	1.39:1	1.4:1	1.41:1
Seat Tube Length, C-TTT	460mm	490mm	520mm	550mm	580mm	606mm
Top Tube Length, Effective/Horizontal HT Top	520mm	535mm	550mm	565mm	585mm	605mm
Top Tube Slope	4.6deg	3.5deg	2.6deg	1.7deg	1.2deg	0.8deg
Head Tube Angle	73deg	73.5deg	74deg	74.5deg	74.5deg	75deg
Seat Tube Angle	75deg	75deg	74.5deg	74.5deg	74.5deg	74.5deg
Head Tube Length	95mm	110mm	130mm	150mm	175mm	200mm
Bottom Bracket Drop	58mm	58mm	58mm	58mm	58mm	58mm
Bottom Bracket Height	278mm	278mm	278mm	278mm	278mm	278mm
Chainstay Length	396mm	396mm	396mm	396mm	396mm	396mm
Chainstay Length Max	396mm	396mm	396mm	396mm	396mm	396mm
Chainstay Length Horizontal	391.7mm	391.7mm	391.7mm	391.7mm	391.7mm	391.7mm
Chainstay Length Horizontal Max	391.7mm	391.7mm	391.7mm	391.7mm	391.7mm	391.7mm
Front-Center	555.8mm	566.9mm	572.3mm	583mm	602.9mm	617.5mm
Front-Center Horizontal	552.8mm	563.9mm	569.4mm	580.1mm	600.1mm	614.8mm
Wheelbase	944.5mm	955.6mm	961.1mm	971.8mm	991.8mm	1006.5mm
Wheelbase Max	944.5mm	955.6mm	961.1mm	971.8mm	991.8mm	1006.5mm
Fork Offset/Rake	30mm	30mm	30mm	30mm	30mm	30mm
Fork Length (Axle-To-Crown)	370mm	370mm	370mm	370mm	370mm	370mm
Trail	71.4mm high	68.2mm high	65.1mm high	62.1mm mid/neutral	62.1mm mid/neutral	59mm mid/neutral
Mechanical Trail	68.2mm	65.4mm	62.6mm	59.8mm	59.8mm	57mm
Wheel Flop	20mm	18.6mm	17.3mm	16mm	16mm	14.7mm
Standover Height	744mm	772mm	796mm	821mm	847mm	870.1mm
Tire to Pedal Spindle	49.8mm 170 mm cranks	60.9mm 170 mm cranks	66.3mm 170 mm cranks	77mm 170 mm cranks	96.9mm 170 mm cranks	111.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks

	46cm	49cm	52cm	55cm	58cm	61cm
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
Tire Width	25mm	25mm	25mm	25mm	25mm	25mm
Tire Width Max	25mm	25mm	25mm	25mm	25mm	25mm
Tire Outer Diameter	672mm	672mm	672mm	672mm	672mm	672mm
Bike Length with Tires	1616.5mm	1627.6mm	1633.1mm	1643.8mm	1663.8mm	1678.5mm

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:Bike Counterculture Geometry Database

Suggest Bike Edit

2017 All-City Cycles Thunderdome Base

Geometry

Base Build

Stack and Reach vs. Category Trend