SYX Moto: Dirt Bike Carburetor

Welcome to our blog post where we dive into the exciting world of SYX Moto dirt bike upgrades. Today, we’re focusing on a popular upgrade that can enhance the performance of your SYX Moto Roost and SYX Moto Whip – the installation of a new Nibbi PE24mm carburetor. Upgrading your carburetor can unlock a whole new level of power and responsiveness for your off-road adventures. Join us as we explore the step-by-step process of installing this impressive dirt bike upgrade. We’ll ensure that your SYX Moto rides like a champion and help you unleash the full potential of your Roost or Whip.

For detailed information on the SYX Moto Roost and SYX Moto Whip, don’t miss our comprehensive review in the “Best Pit Bikes” blog post. Get a firsthand look at these amazing bikes!

This upgrade is for a 4-stroke 125cc pit bike!

Before you begin, gather the necessary tools and components. Make sure to have the Nibbi PE24mm Carburetor and the Nibbi Replacement Manifold Air Joint Connector, which can be purchased from Amazon by clicking on their respective pictures above. Additionally, you’ll need a metal hack saw or a metal blade for your reciprocating saw, a ratchet set, a Philips screwdriver, and gloves. Having these items ready will ensure a smooth installation process.

Furthermore, I highly advise investing in a dirt bike stand for added convenience. While not essential, it will undoubtedly spare your back and streamline the installation process. Should you choose to make the purchase, I recommend selecting a lifting stand to make your life even easier. Take a look at the price of the JFG Racing Dirt Bike stand for a reliable option.

Before you proceed with the installation, make sure to turn off the gas.

Here’s a step-by-step guide for the installation process:

  • 1: Carefully remove the top throttle cable from the stock carburetor.
  • 2: Use a pair of pliers to squeeze the clamp holding the fuel tube onto the carburetor and remove the tube.
  • 3: Unscrew the bolts that attach the intake manifold to the engine and carburetor. Ensure that the manifold remains bolted to the carburetor to remove everything as one piece.
  • 4: Set aside the old carburetor on a clean surface. To prevent dust or debris from entering, cover the engine hole with foil or saran wrap until the new carburetor is installed. This will help maintain a clean and protected environment for the installation process.
  • 5: Carefully remove the bolts connecting the intake manifold to the old carburetor.
Intake Manifold

Highly recommend wearing gloves and safety glasses before proceeding to cut the manifold.

  • 6: It’s time to cut the intake manifold! Align the manifold with the hole in the engine to determine the correct end that goes to the carburetor. Take accurate measurements and ensure a straight line cut just past the flange of the manifold. Once you’ve cut all the way through, it’s time to take care of the finishing touches. Grab some sandpaper and gently sand the edges to ensure a smooth and clean finish.
  • 7: After cutting and sanding the intake manifold, bolt it back onto the engine and attach the new Nibbi Intake Joint Boot. Use all the components from the kit except the metal flange. Connect the rubber boot to the intake manifold and the left side of the Nibbi Carburetor. The front of the Nibbi Carburetor features the Nibbi logo without a red valve, or the left side has a smaller opening.

You’re almost finished installing your new dirt bike upgrades!

Dirt Bike Carburetor a Nibbi PE24mm
  • 8: Securely attach the fuel line to the new carburetor using the clamp. Locate the gold fuel intake, which can be seen in the bottom right photo above, and connect the fuel line to it.
  • 9: Remove the old throttle cap and throttle cable from the old carburetor. Screw the old throttle cap onto the old carburetor for storage. Disconnect the throttle cable by pushing it out and detaching it, similar to solving a puzzle game.
  • 10: Attaching the throttle cable through the new Nibbi throttle cap can be a bit challenging, but it’s the final step before you can turn on the fuel and start your bike. Here’s what you need to do:
    • Feed the throttle cable through the new Nibbi throttle cap, ensuring it moves smoothly without any obstructions.
    • Inside the throttle cap, you’ll find a small spring. Position the end of the throttle cable within the spring, aligning it correctly.
    • Compress the spring while pushing the throttle cable further into the cap. This action will allow the cable to seat and lock in place.
    • As you compress the spring, you may encounter some resistance. Apply gentle pressure and continue pushing the cable until it is fully seated and secured.
    • Release the pressure on the spring, allowing it to expand and provide tension to the throttle cable.
    • Double-check that the throttle cable is securely seated and aligned within the throttle cap. Give it a gentle tug to ensure it stays in place.

After securing the throttle cable and attaching the throttle cap onto the carburetor, it’s important to perform a quick check before turning on the bike. Follow these steps:

  1. Roll the throttle back and forth to observe its movement.
  2. Look through the right side of the carburetor, where the air filter attaches, and ensure you can see the throttle raising and lowering as you twist the throttle.

By performing a quick visual inspection, you can confirm that the throttle is properly connected and functioning as intended.

Finally, before you turn on the gas and fire up the bike, there’s one last crucial step to complete!

Now, you have two options. Either carefully remove the old air filter from the stock carburetor, ensuring not to rip it in the process. Alternatively, open your new Nibbi High Performance Air Filter and securely attach it to the right side of the Nibbi Carburetor.

Now, you can turn on the gas and start the bike. In my experience, at my altitude, I didn’t need to make any adjustments to the carburetor. However, if you find that the bike is not running smoothly and you have experience with tuning carburetors, feel free to make the necessary adjustments. If you’re new to tuning, I recommend watching a helpful video by our friends at Throttle Family that explains the process of tuning and jetting in detail found here!

If you found this post on SYX Moto: Dirt Bike Upgrades helpful, don’t forget to like and share! We value your feedback, so please leave a comment below sharing how it benefited you or if there’s anything else you’d like us to cover.

Step by step install video coming soon!

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