The saying that everyone needs to know is "Steel is real!" Whether you're commuting to work, going on weekend-long adventures, or you're just riding to your local coffee shop to get a latte, you'll love riding on a steel bike. The Marin Four Corners Bike is a fun, steel-framed explorer that's as comfortable on the asphalt as it is in the dirt. It has a butted 4130 Chromoly steel frame and fork that uses 650b wheels on the XS and Small frames and 700c wheels on the Medium to XL frames. The frame features numerous bottle cages/gear mounts so you can go from commuting by bike to bikepacking with ease. The frame also features wide tire clearance for up to 50mm wide tires and is stealth dropper post compatible.
This version of the Marin Four Corners comes with a Shimano Sora 3x9-speed drivetrain. With a 30/39/50 gear range up front and an 11-34T gear range on the rear, you'll have no issues climbing or navigating through roads less traveled. Tektro Spyre-C Road mechanical disc brakes provide reliable stopping power so you can descend under control. With the Marin aluminum double-wall rims and Vee Tire Co. GPVee Tires, you'll have ample traction to ride off-road and will have low rolling resistance on the pavement.
| Frame | Series 1 CrMo, Size-Specific Wheels (XS/S:650b, M/L/XL:700c) |
|---|---|
| Fork | Series 1 CrMo, Fender/Rack/Bottle Cage Eyelets |
| Headset | FSA No.8D, Sealed Cartridge Bearings |
| Shifters | Shimano Sora ST300, 3x9-Speed |
| Front Derailleur | Shimano Sora |
| Rear Derailleur | Shimano Sora 9-Speed |
| Crankset | Shimano Sora FC3030, 30/39/50T |
| Bottom Bracket | Shimano |
| Chain | KMC X9 |
| Cassette | Shimano HG200, 11-34T |
| Brakes | Tektro Spyre-C Road Mechanical Disc, 160mm Rotors |
| Wheelset | Marin Aluminum Double-Wall Rims, Forged Aluminum Alloy 32H Hubs |
| Tires | Vee Tire Co. GPVee 700/650x40mm |
| Handlebar | Marin Butted Alloy, Compact 16° Flare Drop |
| Stem | Marin 3D Forged Alloy |
| Grips/Bar Tape | Marin Comfort Bar Tape, Shock Absorbing Gel Pads |
| Seatpost | Marin Alloy 27.2mm |
| Seatclamp | Bolt-Type |
| Saddle | Marin MTB |
| Intended Use | Commuter, Bikepacking, Gravel |
Note: Components are subject to change without notice.
| Size | Extra Small | Small | Medium | Large | Extra Large |
|---|---|---|---|---|---|
| A: Seat Tube Length | 381 | 422 | 462 | 495 | 528 |
| B: Effective Top Tube | 532 | 553 | 586 | 617 | 647 |
| C: Stack | 560 | 580 | 618 | 648 | 679 |
| D: Reach | 376 | 381 | 403 | 412 | 426 |
| E: BB Height | 291 | 291 | 288 | 288 | 288 |
| F: BB Drop | 53 | 53 | 72 | 72 | 72 |
| G: Head Tube Length | 167 | 188 | 188 | 209 | 252 |
| H: Head Tube Angle | 70 ° | 70 ° | 71 ° | 71 ° | 71 ° |
| I: Seat Tube Angle | 74.5 ° | 73.5 ° | 73.5 ° | 72.5 ° | 72 ° |
| J: Standover Height | 668 | 707 | 745 | 777 | 810 |
| K: Chainstay Length | 432 | 432 | 450 | 450 | 450 |
| L: Wheelbase | 1035 | 1047 | 1087 | 1107 | 1132 |
| Crank Arm Length | 170 mm | 170 mm | 175 mm | 175 mm | 175 mm |
| Stem Length | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Handlebar Width | 400 mm | 400 mm | 420 mm | 420 mm | 440 mm |
| Frame Size | Extra Small | Small | Medium | Large | Extra Large |
|---|---|---|---|---|---|
| Rider Height | 4'11" - 5'3" | 5'2" - 5'6" | 5'6" - 5'10" | 5'10" - 6'1" | 6'1" - 6'4" |
| Size | Extra Small | Small | Medium | Large | Extra Large |
|---|---|---|---|---|---|
| A: Seat Tube Length | 15.0 | 16.6 | 18.2 | 19.5 | 20.8 |
| B: Effective Top Tube | 20.9 | 21.8 | 23.1 | 24.3 | 25.5 |
| C: Stack | 22.0 | 22.8 | 24.3 | 25.5 | 26.7 |
| D: Reach | 14.8 | 15.0 | 15.9 | 16.2 | 16.8 |
| E: BB Height | 11.5 | 11.5 | 11.3 | 11.3 | 11.3 |
| F: BB Drop | 2.1 | 2.1 | 2.8 | 2.8 | 2.8 |
| G: Head Tube Length | 6.6 | 7.4 | 7.4 | 8.2 | 9.9 |
| H: Head Tube Angle | 70.0 ° | 70.0 ° | 71.0 ° | 71.0 ° | 71.0 ° |
| I: Seat Tube Angle | 74.5 ° | 73.5 ° | 73.5 ° | 72.5 ° | 72.0 ° |
| J: Standover Height | 26.3 | 27.8 | 29.3 | 30.6 | 31.9 |
| K: Chainstay Length | 17.0 | 17.0 | 17.7 | 17.7 | 17.7 |
| L: Wheelbase | 40.7 | 41.2 | 42.8 | 43.6 | 44.6 |
| Crank Arm Length | 170 mm | 170 mm | 175 mm | 175 mm | 175 mm |
| Stem Length | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Handlebar Width | 400 mm | 400 mm | 420 mm | 420 mm | 440 mm |
| Frame Size | Extra Small | Small | Medium | Large | Extra Large |
|---|---|---|---|---|---|
| Rider Height | 4'11" - 5'3" | 5'2" - 5'6" | 5'6" - 5'10" | 5'10" - 6'1" | 6'1" - 6'4" |
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50. Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.
1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah. Other states can expect delivery within 3 to 5 days.
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We strive to get you the gear you want at a competitive price. If you find an item we offer from a competitor at a lower price, let us know. We will do our best to instantly match their price. To qualify for the Price Match, your purchase must meet the following conditions:
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It's that time of year... the weather is getting colder and wetter on the daily, leading to some adverse conditions out on the trails. Although we don't condone riding in conditions that will destroy the trails that people have put tons of time and effort into building, sometimes you end up in situations where you don't have much of a choice but to ride.
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We here at Jenson USA know it’s hard getting those items every year you didn’t ask for or need. What you really wanted was to get out there and put more miles on your bike! Well, we got you covered with some great ideas on items that will Keep you Pedaling!
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On the market for some new gravel tires, but unsure where to start? We picked out 5 of the best gravel tires on the market to help slim things down for you. With the weather constantly changing, one of the best ways to keep pedaling throughout the entire season is to make sure your bike is properly equipped to handle the terrain. Tires are your bikes main contact point with the ground so choosing the correct tire for the correct terrain s essential for a safe ride.. Join Mark as he goes over a variety of different tires for different terrain to help you narrow down your choice and keep you pedaling!
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There are so many different avenues that you can take to purchase a new bike, so what sets us apart from them? Why buy a bike from us?
Here at Jenson USA, we take great pride in making sure that your bike buying experience is confidence inspiring and trouble-free from start to finish. We want to be absolutely sure that we are providing the best possible service we can to each and every one of our customers so that there are no questions when purchasing a new bike from us!
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How to replace a bicycle tire is one of the most common questions newer riders may have when it comes to bicycle maintenance. Because installing tires is an incredibly helpful skill that every bicycle owner should learn, we decided to throw a video together demonstrating the process.
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At Jenson USA, it's important to us to support those who are helping build the community of riders and sharing their experiences with others. To that end, we've built an arsenal of Ambassadors that we help to support.
These ambassadors are the pedal-pounding aficionados, building a following of fellow riders across social platforms; they're the lifeblood of our cycling community. Their stories inspire, their passions unites – Their the glue that binds us all. Meet some of the Ambassador crew.
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Santa Cruz recently released their new Stigmata V4 gravel bike, which is packed with tons of thoughtful, progressive features that ensure that you are getting the most out of your ride so you can "go fast, go light, and go further." The new Stigmata leaves no stone unturned for any rider looking for a high quality, lightweight, state of the art, durable and versatile gravel bicycle!
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The Niner Bikes RLT 9 RDO gravel bike is the most popular bike we sell for riders looking to explore the Road Less Traveled. This bike matches performance, efficiency, and comfort into an ideal package that maximizes your fun on your 2-wheeled adventures and is equally happy to smash miles on tarmac as it is to get a bit rowdy on dirt. In this article you will learn what makes the RDO the pinnacle of the renowned Niner’s RLT gravel bike family. Click into the article to learn more.
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Gravel bikes hit the scene big a few years ago, and many cyclists thought they would be a passing fad. Who needs a relaxed geometry drop bar bike with oversized tires? Apparently, many of us did. Each year they are becoming more and more popular, and we are even seeing specialist gravel components and wheelsets now.
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Endless exploring, overnight adventures, rough backroads and gravel trails, there are a lot of ideas about what gravel is. What isn't in doubt is that a gravel bike needs to do them all with control, speed and comfort but above all with a thirst for fun. Designed from the ground up for gravel, Terra isn't a repurposed road bike or a slimmed down mountain bike. Add comfort to your road adventures, finally discover where that dirt trail leads or let your trips spread overnight. There is a wide world out there and Terra is ready to explore it with you. Want to know more? Dive into all the features and details of Orbea's new bike.
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“Gravel cycling is for everybody”
A race will always have that competitive element, but races like Unbound show us that there are countless ways to embrace a challenge. The experience in Emporia is a realization that gravel and competition complement each other, create a community and connect places and people.
Orbea presents “Tears of Joy,” the newest @pachamama_cycling episode. Head into our blog to watch the whole video from this epic race.
#PCHMM
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It can be argued that tires may be the most important (and most affordable) upgrades you can put on your bike. This rings true whether you are churning out miles on pavement, grinding gravel backroads, racing your local cyclocross course, or blasting dirt trails on your mountain bike. Getting the most out of your bike by matching quality compounds, impeccable construction, and cutting-edge tire tech is firmly rooted in the ethos of Specialized. Tires were the first product that Specialized offered and continues to be a fundamental focus of research and development for the brand.
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Some things are just timeless. Like red brick is to buildings, steel is to bicycles. You may have noticed that finely constructed steel frames, crafted and welded by the best builders continue to be highly sought after for their unblemished combination of form and function.
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When it comes to frame materials, nothing brings the WOW factor quite like Titanium. This magical metal combines the excellent ride feel of a steel frame, but without the weight penalty. Not to mention, just the beauty of a Titanium frame will keep your riding buddies drooling while they are struggling to hold your wheel.
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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to 