Marin Four Corners 1

2026 RoadGravel Manufacturer page

Last known price: $1,249

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 9 32–46t / 11–36t
Gear range: 470%
Frame: Steel
Brakes: Mechanical 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 23 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 1 CrMo, Size-Specific Wheels (XS, S = 650B, M, L, XL = 700C), Biometric Geometry, Fender and Rack Mounts, Disc Mount Not identified

Suspension

1 part

Fork

Series 1 CrMo, Fender, Rack, and Bottle Cage Eyelets, IS Disc Mount Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano CS-LG300 11–36t
CS-LG300
Chain
- Shimano CN-LG500
CN-LG500
Crankset
- Shimano Cues FC-U6030-2 11 speeds 46/32t
FC-U6030
Front derailleur
- Shimano Cues FD-U6030 2 speeds
FD-U6030
Rear derailleur
- Shimano Cues RD-U3020 9 speeds
RD-U3020
Shifters
- Shimano Cues ST-U3030
ST-U3030

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

Grips
- Marin
Handlebar
- Marin
Headset
- FSA
Pedals

Nylon Platform Not identified
Saddle
- Marin
Seatpost
- Marin
Stem
- Marin

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	81	81	68	68	68
Stack/reach ratio	1.49	1.52	1.53	1.57	1.59
Suspension and parts
Crank lengthmm	170	170	175	175	175
Handlebar widthmm	400	400	420	420	440
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: 2
Smallest chainring: 32
Largest chainring: 46
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 25.8 in
Highest gear: 121.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 45c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

25.8 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Highest gear

121.3 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Shifting

Mechanical

706 of 1,980 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2026
Sample: 1,980 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.9 km/h
Highest gear: 46.4 km/h

Total gear range 470%

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: 25.8–121.3 gear inches
Class reference (p10–p90): 22.8–127.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2026
Lowest gear: 1455 bicycles with this information, 73.2% of the class
Highest gear: 1455 bicycles with this information, 73.2% of the class