2019 Yamaha YZ250X Setup + First Ride + Initial Review

Aug 8, 2020 | Motorcycle Builds, Motorcycles, Videos

2019 Yamaha YZ250X Setup + First Ride + Initial Review -- FMF Exhaust, JD Jetting, Skid plate

Difficulty: 1/5

Hello to all of our followers and fellow riders! New project alert! Today we’re going to be discussing the most recent addition to the Source ADV outfit — a 2019 Yamaha YZ250X. This is Yamaha’s cross-country version of the YZ250 and is built on top of the race winning 2013 YZ250 MX platform (and hasn’t changed much since then).

The intention of this buildout was to create an indestructible, multi-use bike that will be seeing rocky, rooty, mountain single track, flowy two track, and the occasional visit to the MX track (most likely for hare scrambles). That is not a small order to try to find a bike that sits nicely between all of those.

We’ll offer some insight into the new parts and how the first few rides went after installing those parts. The bike is already relatively light in weight so adding and replacing some of these components to it can greatly improve overall performance without affecting maneuverability. Let’s jump right in!

The Nuts & Bolts:

The overall installation time for the majority of these parts totaled less than a few hours. When you consider that and the benefits to the bike, this was a simple, approachable undertaking that we were pleased with and can definitely recommend. Some add ons that the bike will be getting are:

  • FMF Gnarly pipe
  • FMF turbine core silencer
  • Tusk rear disc brake protector
  • Tusk hour meter
  • 38MM Smartcarb
  • Cycra handguards
  • BRP rubber SUB mount bar coupled with Scotts steering stabilizer
  • Fastway Evolution 4 foot pegs
  • JDJetting jet kit
  • Works Connection skid plate
  • Nuetech Tubliss tire system (front & rear)
  • Full Factory Offroad Suspension tuned for Mark’s 195LB girth and with the goal of mixed use single track as well as hare scrambles/RMEC racing (at B/A level) with enduro specs.

Moving on to the installation phase. Everything was about as straightforward as you’d expect. In regards to removing and reinstalling the exhaust, we relied on a hack that came in handy — the use of a temporary zip-tie implemented to pull the springs on and off the pipe to allow for attachment and ultimately reattachment. These can be clipped and discarded after the exhaust has been pulled back to the manifold. Additionally, we should note that prior to installing the new pipe, we were presented with an ideal moment (which we took full advantage of) to install the skid plate. After installing it, we were ready to get the pipe back on. Sidenote, Yamaha did a unique and resourceful thing by utilizing reusable zip-ties when fastening the radiator ventilation tube and power valve vent tube to the frame. This allows you to avoid completely loosening them or cutting them when bolting the skid plate mounting bracket into the frame. With the skid plate now bolted into place and the exhaust pipe reattached we moved towards the back of the bike to install the new turbine core silencer. Caution should be shown if you’re performing this task yourself as we found the rear bolt that fastens the factory silencer to the subframe had Loctite around the threads, which we reapplied prior to bolting the new silencer back to the bike. Overall, an easy install devoid of f-bombs.

Once the new exhaust system was installed we could focus our attention on the remaining accessories. This included the disc brake protector, jetting kit, handguards, new handlebar grips, and an hour meter. All of these are easy undertakings and don’t require much effort or time. Except for the jetting kit — it requires some tediousness as parts are small and delicate, carbs can be finicky and we were setting the jets for high elevation riding. Don’t let this prove to be too daunting, it requires attention to detail, a basic knowledge of the installation process, and an understanding of the cross-referencing chart included with the kit. By following the steps in the video, you’ll set yourself up for success.

And now, we’re ready to ride!

What We Learned:

So with the first ride now under the belt of the YZ250X, it was evident that the bike was still running slightly rich due to the fuel mixture we were using. After some assessment, the move we decided to make was to install the 38MM Smartcarb in the near future (video/post coming soon) which will bypass the need for any jetting changes for elevation or other environmental changes. It was also clear that the power delivery was increased and created more torque focus as you would expect by the addition of the FMF Gnarly/Turbine core exhaust setup.

One thing that we often address which is on a rider to rider basis, is bike height and comfort. For those of you who stand 6” or taller, this particular bike is likely going to have you feeling a bit cramped. To remedy this we’re going to install those lowered footpegs to give us that extra ½ inch or so and the rubber-mounted handlebar clamps with the Scotts stabilizer bar that’ll allow us to make damping adjustments according to riding conditions and decrease handlebar vibration.


Ultimately, this buildout has been fairly simple and the bike is responding well to the improvements. All in all, the YZ250X is a great bike to ride when you accept that it’s lightweight construction will have you dancing around a bit more than something heavier. But that’s part of its appeal for when you’re looking to really rip it up out on the trails or the track.

That concludes today’s post, hopefully it serves as inspiration for you to do something remarkable with your bike! Remember to visit our store for those adventure essentials, follow us on Instagram & YouTube, and take a moment to sign up for the newsletter on the website to stay up to date on everything Source ADV. Thank you for dropping by, be safe out there and as always, enjoy the ride!

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