Marin Gestalt 2.5

An adventure-ready gravel bike from 2023, made in 6 sizes from 50 to 60.

Size

Stack 575 mmReach 375 mm

Geometry

Marin Gestalt 2.5 geometry by frame size
Size
Fit
Stack (mm)How high the front sits	543	560	575	594	613	634
Reach (mm)How far forward the bars start	370	374	375	389	398	406
Stack ÷ reach Higher = more upright	1.47	1.50	1.53	1.53	1.54	1.56
Top tube (effective) (mm)Horizontal top-tube length	520	535	545	565	585	600
Seat tube angle Saddle position over the pedals	74.5°	74°	73.5°	73.5°	73°	73°
Seat tube length (mm)Frame size reference	470	490	510	530	550	570
Head tube length (mm)Front-end height	120	135	150	170	190	210
Standover (mm)Clearance when you stop	713	732	751	774	793	813
Handling
Head tube angle Steeper = quicker steering	71°	72°	72°	72°	72°	72.5°
Fork offset (mm)Fork rake	50	50	50	50	50	50
Trail (mm)More = steadier steering	67	61	61	61	61	58
Wheelbase (mm)Longer = more stable	993	994	999	1020	1035	1045
Chainstay (mm)Shorter = snappier	415	415	415	415	415	415
BB drop (mm)More = lower centre of gravity	72	72	72	72	72	72
BB height (mm)Pedal clearance in corners	264	264	264	264	264	264
Front centre (mm)Room for your toes	589	590	595	615	630	640

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 84% 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
MMR X-Grip-302026Stack −10 mm, reach same	M	−10 mm	same
MMR X-Grip 002026Stack −10 mm, reach same	M	−10 mm	same
Megamo JAKAR 202026Stack −5 mm, reach +1 mm	M	−5 mm	+1 mm
Trek Checkpoint AL 32020Stack −1 mm, reach +3 mm	54cm	−1 mm	+3 mm
Kross ESKER 1.02026Stack −3 mm, reach +1 mm	S	−3 mm	+1 mm
Giant Revolt Advanced 12024Stack −5 mm, reach +6 mm	S	−5 mm	+6 mm

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

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