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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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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CyberLinK
Waukegan, US
★★★★★ 5
Books arrived in fantasic shape.
Format: Paperback, Format: Paperback
I was worried about making the purchase due to other people having problems with miscut books and glued pages. I ordered the set of three and they are all in great shape. No miscuts or glued pages. Every page seems to be printed legibly. I'm very happy with my purchase. I didn't see any recent reviews so I thought this may help some of those hesitant to buy.
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Reviewed in the United States on August 4, 2024
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Tracy
Grantham, US
★★★★★ 4
Good so far.
Format: Paperback
I will be using these heavily in a month or two, I ordered them because they were on sale so I will come back and edit once I actually read the material, use the glossary, online tools, etc. However from out of the box? All the books are in perfect condition, no sticking pages like other reviews. I will say if you can afford the hardcover version with the labs? Get those. From touching them once or twice so far, this book will not stand up to constant use. It's a really flimsy type.. not even sure if it's paper? It feels like plastic paper. I will also add that that study guide book is F A T . I wish they would have split it into two. I bet the hardcover is gigantic because mine looks like the biggest dictionary you've seen, and I know the cover page which is almost exactly like the pages? Will be ruined once it starts being used consistently.
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Reviewed in the United States on December 16, 2022
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Dave M.
Massapequa, US
★★★★★ 5
As described
Format: Paperback
As described - I'm happy
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Reviewed in the United States on July 28, 2025
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Breanna Tran
Cuba, US
★★★★★ 5
Very Useful
Format: Paperback
I used these for my A+ exams and I didn’t really end up reading the material. I more so used them for their practice exams. That’s only because there’s a lot of information to digest and I was in a rush to take the exams. I still passed so I find that they are well formatted. The questions imo needs to be read more throughly than the exam questions themselves.
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Reviewed in the United States on October 24, 2024
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Kenya
Los Angeles, US
★★★★★ 5
Secret Sister gift at Church
Format: Paperback
Purchased as a gift for a Secret Sister at church, She loves the book!!!
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Reviewed in the United States on May 24, 2026

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