Compare: 2026 Trek Bikes Checkpoint AL3 S vs 2026 XMCS Aero Gravel Base M

Insights

Average 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 progressive gravel bikes

Design deviates from other sizes of XMCS Aero Gravel

Stack	566mm	568mm +2mm
Reach	385mm	395mm +10mm
Stack to Reach Ratio	1.47:1	1.44:1
Seat Tube Length, C-T	520mm	—
Seat Tube Length, Unknown	—	490mm
Top Tube Length, Effective/Horizontal Center	548mm	—
Top Tube Length, Effective/Horizontal Unknown	—	558mm
Top Tube Slope	7.2deg	10.4deg +3.2deg
Head Tube Angle	71.6deg	71.2deg -0.4deg
Seat Tube Angle	73.7deg	74deg +0.3deg
Head Tube Length	117mm	135mm +18mm
Bottom Bracket Drop	78mm	80mm +2mm
Bottom Bracket Height	275mm	288mm +13mm
Chainstay Length	435mm	425mm -10mm
Chainstay Length Horizontal	428mm	417.4mm -10.6mm
Front-Center	610.1mm	623mm +12.9mm
Front-Center Horizontal	605.1mm	619.6mm +14.5mm
Wheelbase	1033mm	1037mm +4mm
Fork Offset/Rake	49mm	55mm +6mm
Fork Length, Unknown	—	400mm
Trail	65.8mm high	67.2mm +1.4mm high
Mechanical Trail	62.4mm	63.6mm +1.2mm
Wheel Flop	19.7mm	20.5mm +0.8mm
Standover Height	765mm	—
Tire to Pedal Spindle	87.1mm 170 mm cranks	85mm -2.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	118mm +13mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	57mm +15mm
Tire Outer Diameter	706mm	736mm +30mm
Bike Length with Tires	1739mm	1773mm +34mm
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://chinertown.com/index.php/topic,6967.75.html
Brand	Trek Bikes	XMCS
Bike	2026 Checkpoint AL3	2026 Aero Gravel Base
Size	S	M
Category	All-road/Gravel	Progressive Gravel