Pavement, Gravel, All Roads Point to The X

FLATBAR X (multiple colors)

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  • Regular price $ 649.99

*FREE SHIPPING Available for this bike within the US 48 States (Alaska/Hawaii, and other territories are excluded and must use bikeflights to ship their orders)


The X is equipped to meet the challenge and grow with you. We wanted simplicity but reliability which is why you have a 38t narrow-wide chainring matched with the Advent X 11-48t 10-speed cassette. This gives you the advantage when taking on hills so you feel confident and ready for more. The X is equipped with a full carbon fork which saves weight and offers vibration dampening. The Flatbar X gives you a more upright position but it still retains some of it's sporty responsiveness that you crave for the roads less traveled. The barrier to discovery and adventure has been lowered so that you can see places you never thought you would before. Whether it is the dirt, the gravel, or the road, The Poseidon X is ready for the adventure.

Full Carbon Fork
Lighter in Weight
Read Reviews

Why Flatbar?

If you have never ridden a dropbar handlebar bike or never ridden one in dirt then a flatbar may be a good option for you. It's the handlebar position you have likely known how to ride with for as long as you have been riding. 

Being in a familiar riding position gives you confidence in steering and balancing. The shifting is all done with your thumb so you can maintain two fingers on the brake levers for those sudden stops. 

With the flatbar you are able to fit bags and racks onto the handlebars without worrying about interfering with the handlebars themselves. Or you can leave the bags at home and ride those trails like a rigid mountain bike.

Customer Reviews

Based on 63 reviews
Justin Kababik
Fantastic value and a great riding bike.

After buying an Enduro bike last year that cost nearly 10x what my flatbar X cost, me, I decided I needed a road/trail biking that I could use in place of running (damn joints) and this bike really fit the bill. Surprisingly light and well built. Assembly was quick. The packaging had taken quite a hit, but other than a slight out of true front wheel, everything was fine. Month 1 of recovery after a knee injury and I logged 50 miles. Not quite the same feel as my other bike, but very solid and it eats up the miles quickly. The brakes still aren't as strong as I'd like them to be but they do their job. Chain does have a tendency to jump the crank ring if you do ride over anything that will give you a little air. I have added bar ends and more comfortable saddle and handgrips, but I do that to most of my bikes. Especially when my other bike is a long travel full suspension ride and going to a rigid setup can feel weird. Definitely recommend. I'm 6'1" and decided to get an XL frame and feel that was the right call.

Steven Boyd
Great bike, great price,

At just over 6', was torn between L and XL. Ordered the XL, and it's perfect for me. Fast delivery, and super easy to assemble. Great ride, and a really nice package for the price. Thanks

Attractive Bike

Very good looking frame. Price was fantastic. I am in Cali but still impressive ship time. I think 3 days from order date.
Can't complain too much because of the price point but I didn't even install the pedals it comes with and the seat is like a torture device. Otherwise, a few min of assembly and ready to ride.
I can't take away from Poseidon for a shipping/carrier issue but the bike came damaged. It was packed very well but there were a couple holes in the box and the rear derailleur hanger was bent. If I wasn't familiar and didn't have a hanger alignment tool this would have caused a lot more of a headache.
Bike shifts great now and other than preferring a Shimano style shifter the included drivetrain works well.

George Jackson
Awesome bike

The FLATBAR X bike is everything I wanted when looking for an all roads bike. It rides very smooth and shifts really nice. The disk brakes needed no adjustment. I had no issue with the seat however, I did switch to my old one. I was able to put it together rather easily in an hour. It will need professional adjusting for the high end gear shifting. I did use the online video so just to make sure I did it in order. It had to take a long time to pack because it was thoroughly wrapped and secure. I loved the picture on the outside of the box of a TV and saying fragile, great idea for the shippers to handle with a bit more care. It took 5 business day to get to Florida. When it arrived, I was home and said to the guy taking it out of the truck, "I did not order a TV." He said, " Trust me this ain't no TV!!!".

Tomasz Olszewski
Great bike

Love my new bike, rides well!