SKU: 34262370666
gravel marin bikes

gravel marin bikes Marin Bikes Four Corners

Sale price$23.91 Regular price$26.57
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

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Description

gravel marin bikes Marin Bikes Four CornersTouring Bikepacking Dedicated Commuting The Four Corners is built for the adventure rider looking to explore deep off of the beaten path, sleep outdoors, and be ready for whatever pavement, dirt road, or light singletrack is around the next corner. The heads up bar position and generous braze ones that make it possible to live on the bike for days at a time are equally at home on the daily commute. Wheel Size: 650B, 700C Frame: CroMo Steel Size Range:

Touring - Bikepacking - Dedicated Commuting
The Four Corners is built for the adventure rider looking to explore deep off of the beaten path, sleep outdoors, and be ready for whatever pavement, dirt road, or light singletrack is around the next corner. The heads-up bar position and generous braze-ones that make it possible to live on the bike for days at a time are equally at home on the daily commute.

  • 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: Utilitour Double Butted CrMo, Size-Specific Wheels (XS, S = 650B, M, L, XL = 700C), Biometric Geometry, Fender and Rack Mounts, Disc Mount
  • Fork: CrMo, Fender, Rack, and Bottle Cage Eyelets, IS Disc Mount
  • Rims: Marin Aluminum, Double Wall, Disc Specific
  • Hub, Rear: Forged Aluminum Alloy, 32H
  • Hub, Front: Forged Aluminum Alloy, 32H
  • Spoke, Nipples: 14g Black Stainless Steel
  • Tires: WTB Resolute, 650B/700Cx42mm, Puncture Protection
  • Derailleur, Rear: Shimano Sora 9-Speed
  • Derailleur, Front: Shimano Sora
  • Shift Lever: Shimano Sora 3x9-Speed
  • Crankset: Shimano Sora Hollowtech II, 50/39/30T
  • Bottom Bracket: Shimano Hollowtech II
  • Chain: KMC X9
  • Cassette: Shimano HG-200-9 9-Speed, 11-34T
  • Brake, Front: Tektro Spyre-C Road Mechanical Disc, 160mm Rotor
  • Brake, Rear: Tektro Spyre-C Road Mechanical Disc, 160mm Rotor
  • Brake Levers: Shimano w/ Integrated Shifters
  • Handlebar: Marin Butted Alloy, Compact 12º 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 and sizes M, L, and XL use 700C.



Bottle / Gear Mounts
Fork leg bottle or accessory cage mounts on the base Four Corners, along with traditional front triangle bottle mounts (three on sizes M-XL, two on XS-S) provide up to six bottle cage mounts total.



Disc Brakes
Disc brakes provide smooth, controlled stopping in all conditions with minimal maintenance.



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



Geometry and Size Guide

XS S M L XL
Stack 560 580 617 646.3 677.6
Reach 376.7 381 403.3 412.6 426.6
Headtube Angle 70.5° 70.5° 71.5° 71.5° 71.5°
Headtube Length 177 198 198 229 262
Seattube Angle 74.5° 73.5° 73.5° 72.5° 72°
Seattube Length 381 422 462 495 528
Toptube Effective 532 552.8 586.1 616.4 646.8
BB Height 285 285 285 285 285
BB Drop 53.5 53.5 72 72 72
Chainstay 432 432 450 450 450
Wheelbase 1030.4 1041.8 1081 1100 1125.1
Standover Height 666.55 706.38 744.53 777.26 809.8
Fork Offset 43 43 49 49 49
Seatpost Diameter 27.2 27.2 27.2 27.2 27.2
Handlebar Width 400 400 420 440 440
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: 34262370666

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Amazon Customer
Cuba, US
★★★★★ 5
This is the chair! Stop looking! You found it!
Color: Grey
Seriously, it's just a great chair. It's comfy, it works, it's well made and it's a fantastic price. I picked this up after trying a "criss cross" style chair that simply was NOT working for everyday, all day home office work. This chair is great and I love that the arms can go up, which turns it into a great art chair as well! The back support is solid, although it's not cushioned at all so you may find putting a little lumbar pillow will help (it hasn't bothered me but over time the elasticity of the mesh has worn a bit) It was very easy to put together and I've been using it everyday, for 8-10 hours a day for several months now. For price you can't beat it. It's also wide enough of a seat I can sit cross crossed.
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Reviewed in the United States on June 26, 2025
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Valerie Gaston
Dallas, US
★★★★★ 3
Cheap and pretty comfortable, but poor adjustment functions.
Color: Black
Chair is pretty comfortable, wheels are solid and it holds height well. Biggest issue is the lean lock, even when engaged the chair does not hold an upright position, so if you're like me and prefer sitting relatively straight, this chair does not offer much support when doing so. Not bad for the price, but I would generally look elsewhere unless you don't care much for adjustment.
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Reviewed in the United States on February 11, 2026
M
Verified Purchase
Malckiah
Omaha, US
★★★★★ 4
Pretty nice. Good price for a good quality chair.
Color: Black
Nice overall. Decent back support, but not really much going on there. Very sturdy chair and is comfortable. The adjustments are just enough to make it good. I would buy it again. rolls great. Easy to put together. perfect adjustable height. It works for my son who is around 5', my wife who is 5' 3 and also me and I am 5' 10.
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Reviewed in the United States on July 22, 2025
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Verified Purchase
AzEng
Belleville, US
★★★★★ 5
Comfortable and good quality
Color: Black
This is a great chair value. It’s easy to assemble, height adjustable, and comfortable to sit on. It has a good seat cushion and firm back support. I really recommend this product. And I just ordered another one for my wife’s sewing table because she tried to steal mine.
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Reviewed in the United States on May 25, 2026
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glenn
Grantham, US
★★★★★ 5
Inexpensive and decent, without any negative qualities.
Color: Black
Easy assembly with spare parts and the one important tool: the allen wrench that tightens those bolts. The instructions were clear and the parts well marked in the blister-package that is sturdy enough that cutting through the edges of the clear plastic bubbles to get at the parts with scissors is the best method to avoid having to chase the small parts when they fly out of the ruptured package. This chair uses the "New" kind of roller which is larger than the old ones and I was able to replace the standard tandem wheels with the super-slick roller blade type that are much faster and easier to maneuver. I'm sitting in the chair now as I type and it's very comfortable, even if the back isn't adjustable. The mesh back is much better for the Summer here (where it gets really hot!) and is more flexible than the basic upholstered chair back, so it fits and conforms. The one it replaced had been reworked several times and it was still too small with the back not correctly aligned, it had fallen apart anyway and was easier to throw away in small pieces.
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Reviewed in the United States on November 6, 2025

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