2023 Pearson Forge Base

	1	2	3	4	5
Stack	540mm	572mm	590mm	610mm	645mm
Reach	337mm	354mm	375mm	383mm	380mm
Stack to Reach Ratio	1.6:1	1.62:1	1.57:1	1.59:1	1.7:1
Seat Tube Length, Unknown	485mm	520mm	540mm	560mm	580mm
Top Tube Length, Effective/Horizontal HT Top	486mm	513mm	544mm	558mm	565mm
Top Tube Slope	8.9deg	8.2deg	7.7deg	7.6deg	9.2deg
Head Tube Angle	70.2deg	71deg	72.5deg	72.5deg	72.5deg
Seat Tube Angle	74.5deg	74.5deg	74deg	74deg	74deg
Head Tube Length	130mm	161mm	173mm	194mm	230mm
Bottom Bracket Drop	75mm	75mm	72.5mm	72.5mm	72.5mm
Bottom Bracket Height	266mm	266mm	268.5mm	268.5mm	268.5mm
Chainstay Length	408mm	408mm	408mm	408mm	408mm
Chainstay Length Horizontal	401.1mm	401.1mm	401.5mm	401.5mm	401.5mm
Front-Center	570.9mm	591.7mm	594.9mm	608.8mm	616.8mm
Front-Center Horizontal	566mm	587mm	590.5mm	604.5mm	612.5mm
Wheelbase	967mm	988mm	992mm	1006mm	1014mm
Fork Offset/Rake	58mm	58mm	50mm	50mm	50mm
Trail	61.1mm mid/neutral	56.1mm mid/neutral	55.1mm mid/neutral	55.1mm mid/neutral	55.1mm mid/neutral
Mechanical Trail	57.5mm	53mm	52.5mm	52.5mm	52.5mm
Wheel Flop	19.5mm	17.3mm	15.8mm	15.8mm	15.8mm
Tire to Pedal Spindle	59.9mm 170 mm cranks	80.7mm 170 mm cranks	83.9mm 170 mm cranks	97.8mm 170 mm cranks	105.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	96mm 170 mm cranks	96mm 170 mm cranks	98.5mm 170 mm cranks	98.5mm 170 mm cranks	98.5mm 170 mm cranks

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://www.pearson1860.com/products/forge-carbon-road-bike?variant=43865550749939

Geometry