2021 Forbidden Bike Co. Dreadnought Base

	440	462	484	506
Stack	612mm	621mm	630mm	639mm
Reach	432.1mm	454.6mm	476.2mm	498.7mm
Stack to Reach Ratio	1.42:1	1.37:1	1.32:1	1.28:1
Seat Tube Length, Unknown	400mm	420mm	450mm	490mm
Top Tube Length, Effective/Horizontal Center	593mm	617mm	641mm	665mm
Head Tube Angle	63.5deg	63.5deg	63.5deg	63.5deg
Seat Tube Angle	73deg	74.7deg	76.1deg	77.1deg
Effective Seat Tube Angle, Unknown	76deg	76deg	76deg	76deg
Head Tube Length	90mm	100mm	110mm	120mm
Bottom Bracket Drop	0mm	0mm	0mm	0mm
Bottom Bracket Height	374.5mm	374.5mm	374.5mm	374.5mm
Chainstay Length	422mm	436mm	450mm	464mm
Chainstay Length Horizontal	422mm	436mm	450mm	464mm
Front-Center	781mm	808mm	834mm	861mm
Front-Center Horizontal	781mm	808mm	834mm	861mm
Wheelbase	1203mm	1244mm	1284mm	1325mm
Fork Offset/Rake	44mm	44mm	44mm	44mm
Fork Length (On-Axis)	583.7mm	583.7mm	583.7mm	583.7mm
Trail	137.6mm very high	137.6mm very high	137.6mm very high	137.6mm very high
Mechanical Trail	123.1mm	123.1mm	123.1mm	123.1mm
Wheel Flop	54.9mm	54.9mm	54.9mm	54.9mm
Standover Height	721mm	721mm	727mm	733mm
Tire to Pedal Spindle	236.5mm 170 mm cranks	263.5mm 170 mm cranks	289.5mm 170 mm cranks	316.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	204.5mm 170 mm cranks	204.5mm 170 mm cranks	204.5mm 170 mm cranks	204.5mm 170 mm cranks

Published Sizing Recommendations

Height

5 ft 2 in

5 ft 6 in

5 ft 10 in

6 ft 2 in

6 ft 6 in

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.

Category Trend

Source:https://us.forbiddenbike.com/products/dreadnought-frame