SKU: 82819097941
marin gravel bike 2020

marin gravel bike 2020 Marin Bikes Four Corners 1

Sale price$24.04 Regular price$26.71
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

marin gravel bike 2020 Marin Bikes Four Corners 1Midweek commute, weekend adventures. No problem for the Marin Four Corners, our steel framed explorer thats as comfortable on the asphalt as it is in the dirt. A butted 4130 CrMo steel frame and fork are designed to be comfortable on rough roads but to also handle fully loaded touring and bike packing. Weve included six bottle mounts, rack and fender eyelets, lowrider fork mounts, generous tire clearance and disc brakes to set you up for all

Midweek commute, weekend adventures. No problem for the Marin Four Corners, our steel-framed explorer that’s as comfortable on the asphalt as it is in the dirt.

A butted 4130 CrMo steel frame and fork are designed to be comfortable on rough roads but to also handle fully loaded touring and bike packing. We’ve included six bottle mounts, rack and fender eyelets, lowrider fork mounts, generous tire clearance and disc brakes to set you up for all conditions and all terrain.

Don’t be fooled, that classic frame material doesn’t mean low-tech. We’ve used biometric fit data to offer five different frame sizes, with size-matched 650b or 700C wheels to perfectly suit riders between 4’11” – and 6’4”. A high front-end creates all-day comfort and heads-up visibility, off-road-ready geometry means you won’t skip a beat when you head off the asphalt and explore Beyond Road.

40mm wide multi-surface Vee GP tires are up for wherever your adventures take you, while Shimano's supremely reliable Sora 3x9 drivetrain ensures that you'll always have the right gear ratio. Finally, Tektro Spyre-C mechanical disc brakes deliver controlled braking, even when riding fully loaded.

  • Wheel Size: 650B, 700C
  • Frame: CroMo/Steel
  • Size Range: XS, S, M, L, XL

Size Rider height range
XS(650B) 4'11" to 5'3"
S(650B) 5'2" to 5'6"
M(700C) 5'6" to 5'10"
L(700C) 5'10" to 6'1"
XL(700C) 6'1" to 6'4"

Specifications
  • Frame: Series 1 CrMo, Size-Specific Wheels (XS, S = 650B, M, L, XL = 700C), Biometric Geometry, Fender and Rack Mounts, Disc Mount
  • Fork: Series 1 CrMo, Fender, Rack, and Bottle Cage Eyelets, IS Disc Mount
  • Rims: Marin Aluminum, Double Wall, Disc Specific
  • Hub Rear: Forged Aluminum Alloy, Disc, 32H
  • Hub Front: Forged Aluminum Alloy, Disc, 32H
  • Spokes: 14g Black Stainless Steel
  • Tire: Vee Tire Co., GPVee, 700/650x40
  • Derailleur Rear: Shimano Sora 9-Speed
  • Derailleur Front: Shimano Sora
  • Shift Levers: Shimano Sora ST300 2x9-Speed
  • Crankset: Shimano Sora FC3030, 50-34T
  • Bottom Bracket: Shimano
  • Chain: KMC X9
  • Cassette: Shimano HG200 9-Speed, 11-34T
  • Brakes Front: Tektro Spyre-C Road Mechanical Disc, 160mm Rotor
  • Brakes Rear: Tektro Spyre-C Road Mechanical Disc, 160mm Rotor
  • Brake Levers: Shimano w/ Integrated Shifters
  • Handlebar: Marin Butted Alloy, Compact 16º Flared Drop
  • Stem: Marin 3D Forged Alloy
  • Grips: Marin Comfort Bar Tape, Shock Absorbing Gel Pads
  • Headset: FSA No.8D, Sealed Cartridge Bearings
  • Seatpost: Marin Alloy, 27.2mm
  • Saddle: Marin MTB
  • Pedals: Trekking Platform

Technology

Five Frame Sizes
The Four Corners is available in five frame sizes to fit riders 4’11 to 6’4” without compromise. For proper fit and bike handling sizes XS and S use 650B wheels, sizes M, L, and XL use 700C.



Bottle / Gear Mounts
Fork leg bottle or accessory cage mounts on the Four Corners, along with an abundance of gear mounts within the front triangle, meaning that you can carry pretty much anything you want.



Tall Headtubes
The Four Corners is built around a tall headtube, allowing for more frame carrying capacity (larger bags), great rider visibility for taking in the sights, as well as the ability to utilize the multiple positions on the drop bars for all-day comfort.



Disc Brakes
Disc brakes provide smooth, controlled stopping in all conditions with minimal maintenance. Especially important when riding a fully loaded bike.



Steel Is Real
The Four Corners uses butted and formed Series 1 4130 CrMo frames and CroMo forks specially tuned for loaded touring with upright geometry for comfortable and efficient all-day rides.



Generous Tire Clearance
The Four Corners 1 can accommodate tires up to 45mm wide.



Dropper Post Compatible
The Four Corners offers a port on the lower part of the seat tube, allowing the installation of an aftermarket dropper post. Droppers are great at adding clearance when riding technical trails, or for simply putting a foot down while stopped at a light.



Geometry and Size Guide
XS S M L XL
A STACK 560 580 618 648 679
B REACH 376.7 381 403.3 412.6 426.6
C HEADTUBE ANGLE 70° 70° 71° 71° 71°
D HEADTUBE LENGTH 167 188 188 209 252
E SEATTUBE ANGLE 74.5° 73.5° 73.5° 72.5° 72°
F SEATTUBE LENGTH 381 422 462 495 528
G TOPTUBE EFFECTIVE 532 553 586 617 647
H BB HEIGHT 291 291 288.5 288.5 288.5
I BB DROP 53.5 53.5 72 72 72
J CHAINSTAY 432 432 450 450 450
K WHEELBASE 1035 1047 1087 1107 1132
L STANDOVER HEIGHT 668 707 745 777 810
M FORK OFFSET 43 43 49 49 49
SEATPOST DIAMETER 27.2 27.2 27.2 27.2 27.2
HANDLEBAR WIDTH 400 400 420 420 440
STEM LENGTH 70 70 70 70 70
CRANK LENGTH 170 170 175 175 175

All lengths in millimeters

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82819097941

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Reviewed in the United States on March 24, 2026
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Arvin
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★★★★★ 5
Perfect for on the go use.
The Lisen Wireless charger is perfect for on the go pop in and pop out when needed. It’s very functional and only needs one hand use to lock or unlock. It fits perfectly on the air vent. It’s look sleek and well made. The charging speed may be slow unfortunately.
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Reviewed in the United States on April 26, 2026
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Connor Pack
Natrona Heights, US
★★★★★ 4
Good, except for release button placement
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Reviewed in the United States on September 22, 2025
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Thisisarealreview
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★★★★★ 5
Great product if you’d like to talk and keep your phone charged at the same time
I really really like these. I have two one in my truck one in my car I like it because I can put my headphones in while it’s being charged so I can talk on long drives like four hour drives and the battery never goes dead and I have the ability to utilize the plug-in. I don’t like Wi-Fi. I have a tendency to lose them so I like old-fashioned wire it just is my preference.
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Reviewed in the United States on March 22, 2026
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Mt
Port Orchard, US
★★★★★ 5
Muy buena calidad lo llevo usando por mucho tiempo y aún funciona.
Carga rápido y sostiene muy bien el celular
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