Compare: 2026 Trek Bikes Checkpoint AL3 S vs 2020 Flyxii FE-02 Gravel Base 54

Insights

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

Design deviates from other sizes of Trek Bikes Checkpoint

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

Stack	566mm	568mm +2mm
Reach	385mm	371mm -14mm
Stack to Reach Ratio	1.47:1	1.53:1
Seat Tube Length, C-T	520mm	540mm +20mm
Top Tube Length, Effective/Horizontal Center	548mm	—
Top Tube Length, Effective/Horizontal Unknown	—	545mm
Top Tube Slope	7.2deg	5.6deg -1.6deg
Head Tube Angle	71.6deg	71.5deg -0.1deg
Seat Tube Angle	73.7deg	73deg -0.7deg
Head Tube Length	117mm	150mm +33mm
Bottom Bracket Drop	78mm	67mm -11mm
Bottom Bracket Height	275mm	284mm +9mm
Chainstay Length	435mm	435mm +0mm
Chainstay Length Horizontal	428mm	429.8mm +1.8mm
Front-Center	610.1mm	595.1mm -15mm
Front-Center Horizontal	605.1mm	591.4mm -13.7mm
Wheelbase	1033mm	1021.2mm -11.8mm
Fork Offset/Rake	49mm	50mm +1mm
Fork Length, Unknown	—	395mm
Trail	65.8mm high	64.7mm -1.1mm mid/neutral
Mechanical Trail	62.4mm	61.4mm -1mm
Wheel Flop	19.7mm	19.5mm -0.2mm
Standover Height	765mm	—
Tire to Pedal Spindle	87.1mm 170 mm cranks	71.6mm -15.5mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	111.5mm +6.5mm 172.5 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	40mm -2mm
Tire Outer Diameter	706mm	702mm -4mm
Bike Length with Tires	1739mm	1723.2mm -15.8mm
Crank Length	—	172.5mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Aluminum	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	n/a	https://www.flyxii.com/page5?product_id=21&brd=1, https://www.flyxii.com/page5?product_id=21
Brand	Trek Bikes	Flyxii
Bike	2026 Checkpoint AL3	2020 FE-02 Gravel Base
Size	S	54
Category	All-road/Gravel	All-road/Gravel