Trek Checkpoint SL 6 AXS Gen 3

An all-road gravel bike from 2026, made in 6 sizes from XS to XL.

Size

Stack 579 mmReach 391 mm

Geometry

Trek Checkpoint SL 6 AXS Gen 3 geometry by frame size
Size
Fit
Stack (mm)How high the front sits	535	556	579	601	620	640
Reach (mm)How far forward the bars start	380	386	391	397	402	408
Stack ÷ reach Higher = more upright	1.41	1.44	1.48	1.51	1.54	1.57
Top tube (effective) (mm)Horizontal top-tube length	536	547	566	578	589	601
Seat tube angle Saddle position over the pedals	72.7°	73°	72.8°	72.8°	72.8°	72.8°
Seat tube length (mm)Frame size reference	445	480	505	530	550	575
Head tube length (mm)Front-end height	86	106	130	151	171	191
Standover (mm)Clearance when you stop	746	772	799	813	837	861
Handling
Head tube angle Steeper = quicker steering	71°	71.4°	71.6°	72°	72.1°	72.4°
Fork offset (mm)Fork rake	49	49	50	49	49	49
Trail (mm)More = steadier steering	71	68	68	64	64	62
Wheelbase (mm)Longer = more stable	1013	1022	1034	1042	1052	1062
Chainstay (mm)Shorter = snappier	430	430	430	430	430	430
BB drop (mm)More = lower centre of gravity	76	76	76	76	76	76
BB height (mm)Pedal clearance in corners	260	260	260	260	260	260
Front centre (mm)Room for your toes	595	604	615	624	634	643

Underlined values are calculated by BikeLens. A dash means the brand doesn't publish it.

Quick enough for spirited riding, comfortable enough for long days on mixed terrain.

Size MD is more upright than 54% of the 106 gravel frames we track.

The closest gravel frames from other ranges, against size MD here.

Bikes with a similar fit, compared with size MD of this bike
Bike	Size	Stack	Reach
Cube Nuroad C:62 EX2026Stack same, reach +2 mm	M	same	+2 mm
Cervelo Áspero-52026Stack −4 mm, reach +4 mm	56	−4 mm	+4 mm
Basso Palta2026Stack +2 mm, reach −2 mm	L	+2 mm	−2 mm
Giant Revolt Advanced 0 SE2026Stack +7 mm, reach −4 mm	M	+7 mm	−4 mm
Bmc Kaius 01 ONE2026Stack +2 mm, reach +9 mm	56	+2 mm	+9 mm
Specialized Crux Comp - Shimano GRX2026Stack −1 mm, reach +6 mm	56	−1 mm	+6 mm