Marin Gestalt XR 2025 Gravel Bike

The Gestalt X is our hard-charging, rough-and-rowdy take on what gravel and adventure bikes can do. Break off the fire road, down the singletrack and charge further and faster than ever before. All while keeping the versatility, challenge and fun of a bike with drop handlebars.

The Gestalt X is built with a longer-than-the-usual wheelbase, slack-like-your-mountain-bike head angle, low-slung frame, wide bars, short stem, big and chunky tires with room for up to 50mm on 700c or 54mm with a 650b wheelset.

The Gestalt XR takes gravel to the next level. XR brings our MTB-inspired, Series 3 aluminum Gestalt X frame and adds a gravel-specific Shimano GRX 11-speed drivetrain, GRX hydraulic disc brakes, a TranzX dropper post, cushy and grippy 44mm wide Vee Tire Rubber and heaps of our own bespoke Marin components

Key upgrades over the Gestalt X10:

Shimano GRX 11-speed drivetrain

Shimano GRX BRX400 hydraulic disc brakes

TranzX dropper post

Specification

Specifications are subject to change without notice

Size Guide

Frame Size	Minimum Height	Maximum Height
Small	160cm (5’3”)	168cm (5’6”)
Medium	168cm (5’6”)	178cm (5’10”)
Large	178cm (5’10”)	188cm (6’2”)
X Large	188cm (6’2”)	193cm (6’4”)

We have developed our size guide from our selling experience and it may differ from the manufacturers guide. Please note, this is only a guide and if you have any concerns over sizing please get in contact

Geometry

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Frame Size	Small	Medium	Large	X Large
A – Stack	547.6	566	589.1	621.5
B – Reach	400	420	440	460
C – Headtube Angle	67.5°	67.5°	67.5°	67.5°
D – Headtube Length	130	150	175	210
E – Seattube Angle	75°	74°	74°	74°
F – Seattube Length	460	485	505	530
G – Toptube Effective	546.7	582.3	608.9	638.2
H – BB Height	282.5	282.5	282.5	282.5
I – BB Drop	80	80	80	80
J – Chainstay	425	425	425	425
K – Wheelbase	1065.2	1092.8	1122.4	1155.6
L – Standover Height	678.6	687.7	708.6	734.5
M – Fork Offset	50	50	50	50
Seatpost Diameter	27.2	27.2	27.2	27.2
Handlebar Width	440	460	480	480
Stem Length	50	50	50	50
Crank Length	170	170	175	175

Want to compare the size of your current bike to this one? Read our Reach and Stack guide here.