Marin Gestalt

An adventure-ready gravel bike from 2018, made in 6 sizes from 50 to 60.

Size

Stack 579 mmReach 374 mm

Geometry

Marin Gestalt geometry by frame size
Size
Fit
Stack (mm)How high the front sits	549	565	579	600	619	640
Reach (mm)How far forward the bars start	373	373	374	387	396	404
Stack ÷ reach Higher = more upright	1.47	1.51	1.55	1.55	1.56	1.58
Top tube (effective) (mm)Horizontal top-tube length	520	535	545	565	585	600
Seat tube angle Saddle position over the pedals	75°	74°	73.5°	73.5°	73°	73°
Seat tube length (mm)Frame size reference	450	470	490	510	530	550
Head tube length (mm)Front-end height	120	135	150	170	190	210
Standover (mm)Clearance when you stop	666	583	694	714	727	747
Handling
Head tube angle Steeper = quicker steering	70.5°	71°	71°	71.5°	71.5°	72°
Fork offset (mm)Fork rake	50	50	50	50	50	50
Trail (mm)More = steadier steering	71	67	67	64	64	61
Wheelbase (mm)Longer = more stable	999	1000	1005	1021	1036	1046
Chainstay (mm)Shorter = snappier	415	415	415	415	415	415
BB drop (mm)More = lower centre of gravity	80	80	80	80	80	80
BB height (mm)Pedal clearance in corners	256	256	256	256	256	256
Front centre (mm)Room for your toes	597	598	604	619	634	644

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

An upright, steady position that suits loaded bikes and long hours in the saddle.

Size 54 is more upright than 93% of the 106 gravel frames we track.

The closest gravel frames from other ranges, against size 54 here.

Bikes with a similar fit, compared with size 54 of this bike
Bike	Size	Stack	Reach
Wilier Jena2026Stack +3 mm, reach +8 mm	M	+3 mm	+8 mm
Megamo JAKAR 202026Stack −9 mm, reach +2 mm	M	−9 mm	+2 mm
Merida SILEX 3002024Stack +8 mm, reach +6 mm	XS	+8 mm	+6 mm
Kross ESKER 1.02026Stack −7 mm, reach +2 mm	S	−7 mm	+2 mm
Giant Revolt Advanced 12024Stack −9 mm, reach +7 mm	S	−9 mm	+7 mm
MMR X-Tour 002026Stack −10 mm, reach +6 mm	M	−10 mm	+6 mm

These builds share this exact geometry, so they fit the same.