marin four corners gravel bike Marin Four Corners 2 2025 | Gravel Bikes

marin four corners gravel bike Marin Four Corners 2 2025 | Gravel BikesMidweek commute, weekend adventures. No problem for the Marin Four Corners, Marin's 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, Marin's 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. Marin have used biometric fit data to offer five different frame sizes, with size-matched 650b or 700C wheels to perfectly suit riders between 4’11” – 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.

SIZING - 

• 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 6'5"

SPECIFICATION - 

FRAME - Series 3 Double Butted CrMo, Size-Specific Wheels (XS, S = 650B, M, L, XL = 700C) , Biometric Geometry, Fender and Rack Mounts, 142x12mm Thru-Axle, Flat Mount 160 Disc Mount
FORK - Series 3 CrMo, 100x12mm Thru-Axle, Flat Mount 160 Disc Mount, Fender, Rack, and Bottle Cage Eyelets
RIMS - Marin Aluminium Double Wall, 25mm Inner, Disc Specific, Tubeless-Compatible
HUB REAR - Forged Aluminium Alloy, Disc, 32H
HUB FRONT - Forged Aluminium Alloy, Disc, 32H
SPOKES - 14g Black Stainless Steel
TIRES - Vee Tire Co., Rocket Man, 650/700x44, Tubeless-Compatible
DERAILLEUR REAR - SRAM Apex 1 12-Speed
SHIFT LEVER - SRAM Apex 1 1x12-Speed
CRANKSET - SRAM Apex 1, 40T
BOTTOM BRACKET - SRAM DUB BSA
CHAIN - SRAM NX
CASSETTE - SRAM CS-XG-1275, 10-52T
BRAKES FRONT - SRAM Apex 1 Flat-Mount Hydraulic Disc, 160mm Rotor
BRAKES REAR - SRAM Apex 1 Flat-Mount Hydraulic Disc, 160mm Rotor
BRAKE LEVERS - SRAM Apex 1 Hydraulic Disc
HANDLEBAR - Marin Butted Alloy, Compact 16º Flared Drop
STEM - Marin 3D Forged Alloy
GRIPS - Marin Comfort Tape
HEADSET - FSA No.42/ACB
SEATPOST - Marin Alloy, 27.2mm
SADDLE - Marin Beyond Road Concept
PEDALS - Marin Oso OEM Nylon Platform
EXTRAS - Bolt-On Thru-Axles F & R