2026 CarbonSpeed XMCS Gran Turismo Base

	50	52	54	56	58
Stack	531.5mm	548mm	562mm	582.4mm	600.3mm
Reach	362.5mm	368mm	374.5mm	380.2mm	384.1mm
Stack to Reach Ratio	1.47:1	1.49:1	1.5:1	1.53:1	1.56:1
Seat Tube Length, C-TTT	480mm	500mm	517.5mm	540mm	560mm
Top Tube Length, Effective/Horizontal Center	519.9mm	530.3mm	546.3mm	558.3mm	570.5mm
Top Tube Slope	5.9deg	5.5deg	5.2deg	4.9deg	4.8deg
Head Tube Angle	72deg	72deg	72deg	72.5deg	72.5deg
Seat Tube Angle	73.5deg	73.5deg	73deg	73deg	72.75deg
Head Tube Length	122.8mm	138.8mm	154.2mm	173.9mm	197.9mm
Bottom Bracket Drop	72mm	71.9mm	71.9mm	72.1mm	66.7mm
Bottom Bracket Height	274mm	274.1mm	274.1mm	273.9mm	279.3mm
Chainstay Length	422mm	422mm	422mm	422mm	422mm
Chainstay Length Horizontal	415.8mm	415.8mm	415.8mm	415.8mm	416.7mm
Front-Center	565.8mm	576.6mm	587.4mm	594.8mm	605.2mm
Front-Center Horizontal	561.2mm	572.1mm	583mm	590.4mm	601.5mm
Wheelbase	977mm	987.9mm	998.8mm	1006.2mm	1018.2mm
Fork Offset/Rake	47mm	47mm	47mm	47mm	47mm
Fork Length, Unknown	375mm	375mm	375mm	375mm	375mm
Trail	63mm mid/neutral	63mm mid/neutral	63mm mid/neutral	59.8mm mid/neutral	59.8mm mid/neutral
Mechanical Trail	59.9mm	59.9mm	59.9mm	57mm	57mm
Wheel Flop	18.5mm	18.5mm	18.5mm	17.2mm	17.2mm
Tire to Pedal Spindle	49.8mm 170 mm cranks	60.6mm 170 mm cranks	71.4mm 170 mm cranks	78.8mm 170 mm cranks	89.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	104mm 170 mm cranks	104.1mm 170 mm cranks	104.1mm 170 mm cranks	103.9mm 170 mm cranks	109.3mm 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.xmcarbonspeed.cc/products/xmcs-gran-turismo-frameset

Geometry