2025 Esker Cycles Lorax Steel (51.5mm Offset)

	S1/SM	S2/MD	S3/LG	S4/XL
Stack	600mm	610mm	645mm	670mm
Reach	365mm	380mm	390mm	405mm
Stack to Reach Ratio	1.64:1	1.61:1	1.65:1	1.65:1
Seat Tube Length, C-T	400mm	460mm	510mm	560mm
Top Tube Length, Effective/Horizontal HT Top	537mm	560mm	587mm	610mm
Head Tube Angle	68deg	68deg	68deg	68deg
Effective Seat Tube Angle, ETT HT Top	74deg	73.5deg	73deg	73deg
Head Tube Length	90mm	100mm	138mm	165mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm
Bottom Bracket Height	302.7mm	302.7mm	302.7mm	302.7mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	439.8mm	439.8mm	439.8mm	439.8mm
Front-Center	638.9mm	657.8mm	681.6mm	706.5mm
Front-Center Horizontal	635.2mm	654.2mm	678.2mm	703.2mm
Wheelbase	1075mm	1094mm	1118mm	1143mm
Fork Offset/Rake	51.5mm	51.5mm	51.5mm	51.5mm
Fork Length (Axle-To-Crown)	495mm	495mm	495mm	495mm
Trail	94.2mm very high	94.2mm very high	94.2mm very high	94.2mm very high
Mechanical Trail	87.4mm	87.4mm	87.4mm	87.4mm
Wheel Flop	32.7mm	32.7mm	32.7mm	32.7mm
Tire to Pedal Spindle	98.2mm 170 mm cranks	117.1mm 170 mm cranks	140.9mm 170 mm cranks	165.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	132.7mm 170 mm cranks	132.7mm 170 mm cranks	132.7mm 170 mm cranks	132.7mm 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://eskercycles.com/products/2024-lorax-frameset

Geometry