Marin Four Corners 2025 - Gravel Bike
The Marin Four Corners is a steel-framed gravel and adventure bike designed for comfort and load-carrying on any terrain. With generous tyre clearance, multiple gear mounts, and stable geometry, it’s ready for bikepacking, touring, and everyday rides.
Key Features
- Series 1 4130 CrMo steel frame, size-specific wheels, up to 45mm tyre clearance
- Series 1 CrMo steel fork with rack, fender & bottle mounts
- MicroSHIFT Sword 2x9-speed drivetrain
- Tektro Spyre-C mechanical disc brakes
- Marin double wall alloy wheels
- Vee Tire Co. QuikStyk 45mm tubeless-ready tyres
- Multiple rack, fender, and gear mounting points
- Available with 0% APR finance
The Marin Four Corners is built for riders who want a versatile, durable bike that’s equally capable on gravel roads, tarmac, and fully loaded tours. The Series 1 4130 butted CroMo steel frame is tuned for comfort and resilience, with a tall headtube for improved visibility and all-day comfort on long rides. Its size-specific wheel concept pairs XS and S frames with 650B wheels for balanced handling, while M, L, and XL use 700C wheels for stability and efficiency.
Generous tyre clearance allows for up to 45mm wide tyres, giving the comfort and grip needed for off-road touring. The Series 1 CroMo steel fork includes multiple mounting points for bottles, racks, or lowrider panniers, making it easy to carry everything from camping gear to groceries.
A MicroSHIFT Sword 2x9-speed drivetrain offers a wide gear range for both steep climbs and fast descents, while Tektro Spyre-C mechanical disc brakes provide reliable stopping power in all conditions. Marin’s double-wall alloy wheels are built to handle heavy loads, and Vee Tire Co. QuikStyk 45mm tyres give you smooth rolling performance with the option to set up tubeless.
The Four Corners also features mounting points across the frame and fork for bottles, racks, and accessories, plus dropper post compatibility for extra control on technical sections. Whether you’re loading up for a multi-day bikepacking adventure or riding into work, the Four Corners offers comfort, practicality, and the toughness to keep going when the road runs out.
Occasionally, without notice, manufacturers change product design and/or 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 |
| Rear Shock | N/A |
| Headset | FSA No.8D, Sealed Cartridge Bearings |
| Stem | Marin 3D Forged Alloy |
| Bars | Marin Butted Alloy, Compact 16º Flared Drop |
| Front Brake | Tektro Spyre-C Road Mechanical Disc, 160mm Rotor |
| Rear Brake | Tektro Spyre-C Road Mechanical Disc, 160mm Rotor |
| Brake Lever | mircoSHIFT SWORD |
| Front Mech | Microshift |
| Rear Mech | MicroSHIFT Sword Black, 9-Speed |
| Shifters | MicroSHIFT Sword Black, 2x9-Speed |
| Rims | Marin Aluminum, Double Wall, Disc Specific |
| Front Hub | Forged Aluminum Alloy, Disc, 32H |
| Rear Hub | Forged Aluminum Alloy, Disc, 32H |
| Spokes | 14g Black Stainless Steel |
| Front Tyre | Vee Tire Co., QuikStyk, 700x45, Folding Bead, Tubeless Compatible |
| Rear Tyre | Vee Tire Co., QuikStyk, 700x45, Folding Bead, Tubeless Compatible |
| Seat Post | Marin Alloy, 27.2mm |
| Saddle | Marin MTB |
| Chainset | Forged Aluminum, 46-29T |
| Bottom Bracket | Square Taper, Sealed Bearing |
| Chain | KMC X9 |
| Cassette | MicroSHIFT, 9-Speed, 11-38T |
| Pedals | Trekking Platform |
| Motor | - |
See the table below to find the right size.
Gravel Bike Bike Sizing
XXS (44)
4'8"
5'1"
XS (48)
5'1"
5'4"
S (51)
5'4"
5'7"
M (54)
5'7"
5'10"
L (56)
5'10"
6'0"
XL (58)
6'0"
6'3"
XXL (60)
6'3"
6'5"
XXXL (62)
6'5"
6'9"
Read our bike size guide for more information on sizing.
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Height |
Size |
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4’8” / 143cm |
44 (XXS) |
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4’9” / 145cm |
44 (XXS) |
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4’10” / 148cm |
44 (XXS) |
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4’11” / 150cm |
44 (XXS) |
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5’0” / 152cm |
44 (XXS) |
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5’1” / 155cm |
44 (XXS) |
48 (XS) |
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5’2” / 158cm |
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48 (XS) |
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5’3” / 160cm |
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48 (XS) |
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5’4” / 163cm |
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48 (XS) |
51 (S) |
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5’5” / 165cm |
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51 (S) |
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5’6” / 168cm |
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51 (S) |
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5’7” / 170cm |
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51 (S) |
54 (M) |
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5’8” / 173cm |
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54 (M) |
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5’9” / 175cm |
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54 (M) |
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5’10” / 178cm |
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54 (M) |
56 (L) |
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5’11” / 180cm |
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56 (L) |
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6’0” / 183cm |
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56 (L) |
58 (XL) |
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6’1” / 185cm |
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58 (XL) |
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6’2” / 188cm |
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58 (XL) |
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6’3” / 191cm |
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58 (XL) |
60 (XXL) |
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6’4” / 193cm |
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60 (XXL) |
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6’5” / 196cm |
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60 (XXL) |
62 (XXXL) |
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6’6” / 198cm |
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62 (XXXL) |
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6’7” / 201cm |
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62 (XXXL) |
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6’8” / 203cm |
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62 (XXXL) |
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6’9” / 205cm |
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62 (XXXL) |
Read our bike size guide for more information on sizing.
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Marin Four Corners 2025 - Gravel Bike
Brilliant bike, handles well, very comfy and frame feels sturdy. very impressed & making a great commuter/adventure bike
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