2019 Trek Bikes Super Commuter+ 8S

	S (45cm)	M (50cm)	L (55cm)	XL (60cm)
Stack	586mm	607mm	633mm	663mm
Reach	380mm	388mm	397mm	410mm
Stack to Reach Ratio	1.54:1	1.56:1	1.59:1	1.62:1
Seat Tube Length, C-T	400mm	450mm	500mm	550mm
Top Tube Length, Effective/Horizontal HT Top	559mm	574mm	590mm	613mm
Top Tube Slope	22.3deg	18.8deg	15.9deg	13.5deg
Head Tube Angle	69deg	69.5deg	70deg	70.5deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	130mm	150mm	175mm	205mm
Bottom Bracket Drop	60mm	60mm	60mm	60mm
Bottom Bracket Height	293mm	293mm	293mm	293mm
Chainstay Length	470mm	470mm	470mm	470mm
Chainstay Length Horizontal	466.2mm	466.2mm	466.2mm	466.2mm
Front-Center	632.7mm	643.7mm	655.6mm	674.5mm
Front-Center Horizontal	629.9mm	640.9mm	652.9mm	671.9mm
Wheelbase	1096mm	1107mm	1119mm	1138mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Trail	87.3mm very high	83.9mm very high	80.6mm very high	77.3mm high
Mechanical Trail	81.5mm	78.6mm	75.7mm	72.8mm
Wheel Flop	29.2mm	27.5mm	25.9mm	24.3mm
Standover Height	756mm	789mm	816mm	851mm
Tire to Pedal Spindle	109.7mm 170 mm cranks	120.7mm 170 mm cranks	132.6mm 170 mm cranks	151.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	123mm 170 mm cranks	123mm 170 mm cranks	123mm 170 mm cranks	123mm 170 mm cranks

Published Sizing Recommendations

Height	154 cm to 167 cm	164 cm to 177 cm	174 cm to 187 cm	185 cm to 197 cm
PBH	72 cm to 78 cm	77 cm to 83 cm	82 cm to 88 cm	87 cm to 93 cm

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.trekbikes.com/us/en_US/bikes/hybrid-bikes/electric-hybrid-bikes/super-commuter/super-commuter-8s/p/17297/?colorCode=red