2020 Gilbertson Crawler Base

	Small	Medium	Large	X-Large	XX-Large
Stack	550mm	574mm	595mm	614mm	628mm
Reach	368mm	378mm	390mm	398mm	409mm
Stack to Reach Ratio	1.49:1	1.52:1	1.53:1	1.54:1	1.54:1
Seat Tube Length, C-T	463mm	490mm	518mm	545mm	560mm
Seat Tube Length, Effective HT Top	541mm	568mm	618mm	644mm	662mm
Top Tube Length, Effective/Horizontal HT Top	529mm	550mm	571mm	592mm	613mm
Top Tube Slope	12deg	11.4deg	10.4deg	9.5deg	9.3deg
Head Tube Angle	71deg	72deg	72.5deg	72.5deg	72.5deg
Seat Tube Angle	74deg	73.5deg	73deg	72.5deg	72deg
Head Tube Length	130mm	150mm	170mm	190mm	205mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	275mm	275mm	275mm	275mm	275mm
Chainstay Length	420mm	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.1mm	414.1mm	414.1mm	414.1mm	414.1mm
Front-Center	592mm	592mm	610mm	627mm	641mm
Front-Center Horizontal	587.9mm	594.9mm	605.9mm	621.9mm	636.9mm
Wheelbase	1002mm	1009mm	1020mm	1036mm	1051mm
Fork Offset/Rake	51.6mm	50.5mm	48mm	49.9mm	49.5mm
Fork Length, Unknown	395mm	395mm	395mm	395mm	395mm
Trail	64.2mm mid/neutral	59mm mid/neutral	58.4mm mid/neutral	56.4mm mid/neutral	56.8mm mid/neutral
Mechanical Trail	60.7mm	56.1mm	55.7mm	53.8mm	54.2mm
Wheel Flop	19.8mm	17.3mm	16.8mm	16.2mm	16.3mm
Tire to Pedal Spindle	77mm 170 mm cranks	77mm 170 mm cranks	95mm 170 mm cranks	112mm 170 mm cranks	126mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	105mm 170 mm cranks	105mm 170 mm cranks	105mm 170 mm cranks	105mm 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:http://gilbertson.nl/bikes/crawler/

Geometry