Compare: 2026 Trek Bikes Checkpoint AL3 XS vs 2025 TWITTER Bikes Gravel G2 Base S

Insights

Somewhat aggressive stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Trek Bikes Checkpoint

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of TWITTER Bikes Gravel G2

Stack	545mm	564mm +19mm
Reach	380mm	373mm -7mm
Stack to Reach Ratio	1.43:1	1.51:1
Seat Tube Length, C-T	490mm	—
Seat Tube Length, Unknown	—	450mm
Top Tube Length, Effective/Horizontal Center	536mm	—
Top Tube Length, Effective/Horizontal Unknown	—	535mm
Top Tube Slope	8.2deg	14.8deg +6.6deg
Head Tube Angle	71.2deg	71.8deg +0.6deg
Seat Tube Angle	74.1deg	74deg -0.1deg
Head Tube Length	96mm	140mm +44mm
Bottom Bracket Drop	78mm	70mm -8mm
Bottom Bracket Height	275mm	279mm +4mm
Chainstay Length	435mm	435mm +0mm
Chainstay Length Horizontal	428mm	429.3mm +1.3mm
Front-Center	602.1mm	587mm -15.1mm
Front-Center Horizontal	597.1mm	582.7mm -14.4mm
Wheelbase	1025mm	1012mm -13mm
Fork Offset/Rake	49mm	45mm -4mm
Fork Length, Unknown	—	395mm
Trail	68.4mm high	67.4mm -1mm high
Mechanical Trail	64.8mm	64mm -0.8mm
Wheel Flop	20.9mm	20mm -0.9mm
Standover Height	735mm	729mm -6mm
Tire to Pedal Spindle	79.1mm 170 mm cranks	68mm -11.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	109mm +4mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	38mm -4mm
Tire Outer Diameter	706mm	698mm -8mm
Bike Length with Tires	1731mm	1710mm -21mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Aluminum	Aluminum
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	n/a	https://ir-5.ozone.ru/s3/multimedia-1-s/wc1000/7785284248.jpg
Brand	Trek Bikes	TWITTER Bikes
Bike	2026 Checkpoint AL3	2025 Gravel G2 Base
Size	XS	S
Category	All-road/Gravel	All-road/Gravel