Marin Four Corners 2

2025 RoadGravel Manufacturer page

Marin Four Corners 2, color Gloss Ti Grey / Yellow/black

Last known price: $2,299

Prices shown first for United States
Suspension: Rigid
Wheels: 650b, 700c
Drivetrain: 1 × 12 40t / 10–52t
Gear range: 520%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

17 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Series 3 Double Butted CrMo, Size-Specific Wheels (XS, S = 650B, M, L, XL = 700C), Biometric Geometry, Fender and Rack Mounts, 142x12mm Thru-Axle, Flat Mount 160 Disc Mount, Plentiful Gear Mounts (custom bag templates here) Not identified

Suspension

1 part

Fork

Series 3 CrMo, 100x12mm Thru-Axle, Flat Mount 160 Disc Mount, Fender, Rack, and Bottle Cage Eyelets Not identified

Drivetrain

7 parts

Bottom bracket
- SRAM DUB BSA
Cassette
- SRAM XG-1275 Eagle 12 speeds 10–52t
XG-1275
Chain
- SRAM NX
Crankset
- SRAM Apex 1 10 speeds 40t
Front derailleur

None
Rear derailleur
- SRAM Apex 1 11 speeds
Shifters
- SRAM Apex

Brakes

2 parts

Wheels and tires

5 parts

Front hub

Forged Aluminum Alloy, Disc, 32H Not identified
Rear hub

Forged Aluminum Alloy, Disc, 32H Not identified
Rims
- Marin
Spokes

14g Black Stainless Steel Not identified
Tires
- Vee Tire

Cockpit and contact points

7 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 403mm

Stack 618mm

Wheelbase 1087mm

Head angle 71.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	376.7	381	403.3	412.6	426.6
Stackmm	560	580	618	648	679
Top tube lengthmm	532	553	586	617	647
Seat tube lengthmm	381	422	462	495	528
Head tube lengthmm	167	188	188	209	252
Head tube angle	70°	70°	71°	71°	71°
Seat tube angle	74.5°	73.5°	73.5°	72.5°	72°
Chainstay lengthmm	432	432	450	450	450
Wheelbasemm	1035	1047	1087	1107	1132
Front centermm	609	621	647	667	692
Bottom bracket dropmm	53.5	53.5	72	72	72
Bottom bracket heightmm	291	291	288.5	288.5	288.5
Standover heightmm	668	707	745	777	810
Fork rakemm	43	43	49	49	49
Trailmm	74	74	68	68	68
Stack/reach ratio	1.49	1.52	1.53	1.57	1.59
Suspension and parts
Crank lengthmm	170	170	170	175	175
Handlebar widthmm	440	440	460	460	460
Stem lengthmm	70	70	70	70	70

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 22.3 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 50c
Tire width: 45c
Wheel material: Aluminum
Wheel size: 650b, 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

22.3 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

116.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.5 km/h
Highest gear: 44.4 km/h

Total gear range 520%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 22.3–116.0 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Marin Four Corners 2	Marin Four Corners 1	Marin Four Corners 1 Canada	Marin Four Corners 1 Sora	Marin Four Corners 1 Sword
Drivetrain
Front chainrings	1	2	3	3	2
Smallest chainring	40	29	30	30	29
Largest chainring	40	46	50	50	46
Rear sprockets	12	9	9	9	9
Smallest sprocket	10	11	11	11	11
Largest sprocket	52	38	34	34	38
Lowest gear	22.3 in	22.1 in	25.6 in	25.6 in	22.1 in
Highest gear	116.0 in	121.3 in	131.8 in	131.8 in	121.3 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Mechanical disc	Mechanical disc
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	Not informed	Not informed
Tire clearance	Maximum tire width: 50c	Not informed	Not informed	Not informed	Not informed
Tire width	45c	40c	40c	40c	45c
Wheel size	650b / 700c	700c	650b / 700c	650b / 700c	650b / 700c