2021 Giant Bicycles FastRoad SL 1

	S	M	M-L	L	XL
Stack	537mm	563mm	586mm	607mm	631mm
Reach	386mm	388mm	395mm	403mm	416mm
Stack to Reach Ratio	1.39:1	1.45:1	1.48:1	1.51:1	1.52:1
Seat Tube Length, C-T	445mm	460mm	490mm	520mm	550mm
Top Tube Length, Effective/Horizontal Unknown	545mm	560mm	575mm	595mm	615mm
Top Tube Slope	12.2deg	13.3deg	12.3deg	11.2deg	10.4deg
Head Tube Angle	71.5deg	72deg	72deg	72.5deg	72.5deg
Seat Tube Angle	73.3deg	73deg	73deg	72.5deg	72.5deg
Head Tube Length	130mm	155mm	180mm	200mm	225mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	273mm	273mm	273mm	273mm	273mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	419.2mm	419.2mm	419.2mm
Front-Center	598.9mm	604.9mm	619.8mm	629.7mm	649.6mm
Front-Center Horizontal	594.8mm	600.8mm	615.8mm	625.8mm	645.8mm
Wheelbase	1014mm	1020mm	1035mm	1045mm	1065mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Trail	62mm mid/neutral	58.9mm mid/neutral	58.9mm mid/neutral	55.7mm mid/neutral	55.7mm mid/neutral
Mechanical Trail	58.8mm	56mm	56mm	53.1mm	53.1mm
Wheel Flop	18.7mm	17.3mm	17.3mm	16mm	16mm
Standover Height	697mm	719mm	741mm	767mm	795mm
Tire to Pedal Spindle	85.9mm 170 mm cranks	91.9mm 170 mm cranks	106.8mm 170 mm cranks	111.7mm 175 mm cranks	131.6mm 175 mm cranks
Pedal Spindle to Ground Clearance	103mm 170 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks	98mm 175 mm cranks	98mm 175 mm cranks

Published Sizing Recommendations

Height	5 ft 5 in to 5 ft 8 in	5 ft 8 in to 6 ft 0 in	5 ft 11 in to 6 ft 1 in	6 ft 1 in to 6 ft 3 in	6 ft 4 in to 6 ft 5 in
PBH	27 in to 32 in	30 in to 34 in	30 in to 34 in	31 in to 36 in	33 in to 37 in

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.

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Source:https://www.giant-bicycles.com/gb/fastroad-sl-1-2021