Compare: 2025 Trek Bikes Madone SL6 Gen 8 S vs 2026 TWITTER Bikes X7 Base 49

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Trek Bikes Madone

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of TWITTER Bikes X7

Bar type unusual for category

This: Aero Bar
Category: Drop Bar

Stack	530mm	532mm +2mm
Reach	378mm	365mm -13mm
Stack to Reach Ratio	1.4:1	1.46:1
Seat Tube Length, Unknown	—	458mm
Seat Tube Length, Effective Unknown	440mm	—
Top Tube Length, Effective/Horizontal Unknown	532mm	532mm +0mm
Top Tube Slope	12.1deg	10.6deg -1.5deg
Head Tube Angle	72.2deg	72.2deg +0deg
Seat Tube Angle	73.8deg	74deg +0.2deg
Head Tube Length	121mm	113mm -8mm
Bottom Bracket Drop	72mm	72mm +0mm
Bottom Bracket Height	267mm	269mm +2mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.6mm	403.6mm +0mm
Front-Center	267mm	578mm +311mm
Front-Center Horizontal	572.4mm	573.4mm +1mm
Wheelbase	976mm	977mm +1mm
Fork Offset/Rake	45mm	44mm -1mm
Fork Length, Unknown	—	367mm
Trail	61.6mm mid/neutral	63.3mm +1.7mm mid/neutral
Mechanical Trail	58.6mm	60.2mm +1.6mm
Wheel Flop	17.9mm	18.4mm +0.5mm
Standover Height	734mm	—
Tire to Pedal Spindle	-237mm 165 mm cranks	67mm +304mm 170 mm cranks
Pedal Spindle to Ground Clearance	102mm 165 mm cranks	99mm -3mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	30mm +2mm
Tire Width Max	32mm	—
Tire Outer Diameter	678mm	682mm +4mm
Bike Length with Tires	1654mm	1659mm +5mm
Crank Length	165mm	—
Stem Length	90mm	—
Stem Angle	-7deg	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Aero Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc