2023 TWITTER Bikes M6 Base

	15	17	19
Stack	600.8mm	600.8mm	600.1mm
Reach	407.7mm	422.7mm	432.6mm
Stack to Reach Ratio	1.47:1	1.42:1	1.39:1
Seat Tube Length, C-T	381mm	431mm	483mm
Top Tube Length, Effective/Horizontal Center	582mm	597mm	611mm
Top Tube Slope	24.6deg	19deg	13.5deg
Head Tube Angle	70deg	70deg	70deg
Seat Tube Angle	73.8deg	73.8deg	73.8deg
Head Tube Length	85mm	85mm	100mm
Bottom Bracket Drop	61mm	61mm	61mm
Bottom Bracket Height	307.2mm	307.2mm	307.2mm
Chainstay Length	435mm	435mm	435mm
Chainstay Length Horizontal	430.7mm	430.7mm	430.7mm
Front-Center	656mm	671mm	686mm
Front-Center Horizontal	653.3mm	668.3mm	683.3mm
Wheelbase	1084mm	1099mm	1114mm
Fork Offset/Rake	46mm	46mm	46mm
Fork Length, Unknown	508mm	508mm	508mm
Trail	85mm very high	85mm very high	85mm very high
Mechanical Trail	79.9mm	79.9mm	79.9mm
Wheel Flop	27.3mm	27.3mm	27.3mm
Tire to Pedal Spindle	117.9mm 170 mm cranks	132.9mm 170 mm cranks	147.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	137.2mm 170 mm cranks	137.2mm 170 mm cranks	137.2mm 170 mm cranks

	15	17	19
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	2.25in	2.25in	2.25in
Tire Outer Diameter	736.3mm	736.3mm	736.3mm
Bike Length with Tires	1820.3mm	1835.3mm	1850.3mm

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

Rigid MTB

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2023 TWITTER Bikes M6 Base

Geometry

Base Build

Stack and Reach vs. Category Trend