2024 GT Bicycles Grade AMP Base

	S	M	L	XL
Stack	547mm	577mm	608mm	683mm
Reach	378mm	386mm	395mm	406mm
Stack to Reach Ratio	1.45:1	1.49:1	1.54:1	1.68:1
Seat Tube Length, Unknown	458mm	505mm	553mm	600mm
Top Tube Length, Effective/Horizontal Unknown	545mm	562mm	581mm	601mm
Top Tube Slope	12deg	10deg	8.1deg	10.6deg
Head Tube Angle	69.5deg	71deg	71deg	71deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	124mm	150mm	183mm	214mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm
Bottom Bracket Height	278mm	278mm	278mm	278mm
Chainstay Length	455mm	455mm	455mm	455mm
Chainstay Length Horizontal	448.8mm	448.8mm	448.8mm	448.8mm
Front-Center	617.8mm	620.8mm	641.6mm	662.5mm
Front-Center Horizontal	613.2mm	616.2mm	637.2mm	658.2mm
Wheelbase	1062mm	1065mm	1086mm	1107mm
Fork Offset/Rake	55mm	54.3mm	55.5mm	40.5mm
Trail	73.2mm high	64.2mm mid/neutral	62.9mm mid/neutral	78.7mm high
Mechanical Trail	68.6mm	60.7mm	59.4mm	74.4mm
Wheel Flop	24mm	19.8mm	19.4mm	24.2mm
Standover Height	741mm	782mm	822mm	862mm
Tire to Pedal Spindle	94.8mm 170 mm cranks	97.8mm 170 mm cranks	118.6mm 170 mm cranks	139.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks

	S	M	L	XL
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	42mm	42mm	42mm
Tire Outer Diameter	706mm	706mm	706mm	706mm
Bike Length with Tires	1768mm	1771mm	1792mm	1813mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

All-road/Gravel

Source:https://www.bing.com/search?q=gt+grade+amp+geometry&qs=GS&pq=gt+grade+amp+geomet&sc=12-19&cvid=EA2A5F69D64F473E9F71CA900A73EA1A&FORM=QBRE&sp=1&ghc=1&lq=0

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2024 GT Bicycles Grade AMP Base

Geometry

Base Build

Stack and Reach vs. Category Trend