2024 TWITTER Bikes stealth Base

	45	48	50	52	54
Stack	517.5mm	534.3mm	544.8mm	554.6mm	564.9mm
Reach	358.5mm	369mm	379.3mm	385.7mm	390.2mm
Stack to Reach Ratio	1.44:1	1.45:1	1.44:1	1.44:1	1.45:1
Seat Tube Length, C-T	421mm	439mm	470mm	491mm	517mm
Top Tube Length, Effective/Horizontal Center	504.4mm	519.1mm	530.3mm	540.2mm	549.4mm
Top Tube Slope	13.4deg	12.9deg	10.3deg	9deg	7.2deg
Head Tube Angle	71.2deg	71.2deg	71.35deg	71.3deg	71.2deg
Seat Tube Angle	74.3deg	74.3deg	74.3deg	74.3deg	74.3deg
Head Tube Length	113mm	130mm	140mm	150mm	163mm
Bottom Bracket Drop	74mm	74mm	74mm	74mm	74mm
Bottom Bracket Height	265mm	265mm	265mm	265mm	265mm
Chainstay Length	408mm	408mm	408mm	408mm	408mm
Chainstay Length Horizontal	401.2mm	401.2mm	401.2mm	401.2mm	401.2mm
Front-Center	572.3mm	587.8mm	599.6mm	609.9mm	619.7mm
Front-Center Horizontal	567.5mm	583.1mm	594.7mm	605.1mm	615.3mm
Wheelbase	968.8mm	984.3mm	995.9mm	1006.3mm	1016.6mm
Fork Offset/Rake	54.5mm	54.5mm	54.5mm	54.5mm	54.5mm
Fork Length, Unknown	347.5mm	347.5mm	347.5mm	347.5mm	347.5mm
Trail	57.8mm mid/neutral	57.8mm mid/neutral	56.9mm mid/neutral	57.2mm mid/neutral	57.8mm mid/neutral
Mechanical Trail	54.8mm	54.8mm	53.9mm	54.2mm	54.8mm
Wheel Flop	17.6mm	17.6mm	17.2mm	17.4mm	17.6mm
Tire to Pedal Spindle	63.3mm 170 mm cranks	78.8mm 170 mm cranks	90.6mm 170 mm cranks	100.9mm 170 mm cranks	110.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	95mm 170 mm cranks	95mm 170 mm cranks	95mm 170 mm cranks	95mm 170 mm cranks	95mm 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.

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Geometry