2018 Soma Fabrications Sandworm Base

	MD	LG	XL	XXL
Stack	606mm	606mm	606mm	606mm
Reach	390.5mm	414mm	434mm	456mm
Stack to Reach Ratio	1.55:1	1.46:1	1.4:1	1.33:1
Seat Tube Length, C-T	393mm	444mm	495mm	546mm
Top Tube Length, Effective/Horizontal Center	576mm	600mm	620mm	642mm
Top Tube Slope	24.5deg	18.5deg	12.9deg	7.8deg
Head Tube Angle	69deg	69deg	69deg	69deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	110mm	110mm	110mm	110mm
Bottom Bracket Drop	60mm	60mm	60mm	60mm
Bottom Bracket Height	319.5mm	319.5mm	319.5mm	319.5mm
Chainstay Length	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	446mm	446mm	446mm	446mm
Front-Center	652.8mm	673.7mm	696.6mm	717.5mm
Front-Center Horizontal	650mm	671mm	694mm	715mm
Wheelbase	1096mm	1117mm	1140mm	1161mm
Fork Offset/Rake	47mm	47mm	47mm	47mm
Fork Length (Axle-To-Crown)	484mm	484mm	484mm	484mm
Trail	95.3mm very high	95.3mm very high	95.3mm very high	95.3mm very high
Mechanical Trail	89mm	89mm	89mm	89mm
Wheel Flop	31.9mm	31.9mm	31.9mm	31.9mm
Standover Height	766mm	791mm	815mm	840mm
Tire to Pedal Spindle	103.3mm 170 mm cranks	124.2mm 170 mm cranks	147.1mm 170 mm cranks	168mm 170 mm cranks
Pedal Spindle to Ground Clearance	149.5mm 170 mm cranks	149.5mm 170 mm cranks	149.5mm 170 mm cranks	149.5mm 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.somafab.com/archives/product/sandworm-fat-bike-26-27-5

Geometry