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

Insights

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

Design deviates from other sizes of TWITTER Bikes Gravel G2

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

Design deviates from other sizes of Trek Bikes Checkpoint

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

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	38mm	42mm +4mm
Tire Outer Diameter	698mm	706mm +8mm
Bike Length with Tires	1710mm	1731mm +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	https://ir-5.ozone.ru/s3/multimedia-1-s/wc1000/7785284248.jpg	n/a
Brand	TWITTER Bikes	Trek Bikes
Bike	2025 Gravel G2 Base	2026 Checkpoint AL3
Size	S	XS
Category	All-road/Gravel	All-road/Gravel