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WR250X: Fuel and Intake

WR250X

 

The Yamaha WR250X is a Supermoto offering that is more than capable of keeping up with the bigger stunt bikes.  Powering the WR250X is a fuel injected 249cc, liquid cooled, DOHC, single cylinder engine mated to a six speed transmission with a wet multi-disk clutch.  Weighing in just shy of 300lbs. wet, will make this bike very predictable and easy to handle on the street.

Chain Size:   Front Sprocket:   Rear Sprocket:   Front Tire:   Rear Tire:   Spark Plug:
520 x 108 13T 42T 110/70-17 140/70/17 CR9EK
           

 

Fuel and Intake

The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.

Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly  (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.

All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.

  • Compact design for discrete placement & easy uninstallation to revert to stock settings
  • Easily change & upgrade tunes as you upgrade parts
  • Comes with Power Core software that connects dyno runs with our EFI Tuning Devices to unlock your ride’s potential
  • Pair with other Power Commander accessories like the Autotune, Quickshifter or POD-300
  • Analog input allows you to install any 0-5 volt sensor and build an adjustment table based on its input such as boost or temperature
  • Easily connects to your computer via USB
  • Each cylinder can be mapped individually and for each gear, giving riders more granular control
  • One year warranty
  • Proudly made in the USA
Ships in 3-5 business days
$516.95
WR250X '08 - '11

The EJK evolved out of the need to address the ever-increasing complexity of factory fuel injection. For the newcomer to the market or professionals wanting an easier method for tuning fuel injection, the EJK is a customizable solution for the rider that wants to take control of their tuning needs.

This unit is a piggy-back EFI controller because it does not replace the stock ECU, but rather monitors the signals to the injectors and makes fuel adjustments based on the mode settings. The GEN 3 has a push button interface allowing access up to 6 different modes to allow for quick fine tuning by the end user without needing a computer.

Key Features:

  • No computer or dyno needed!
  • Plug and play, simple to install, base settings preset
  • Unique load based technology
  • Full range tunability available
  • Does NOT interfere with stock ECU operation
  • Simple push button adjustment interface
  • Water-resistant 
  • 2-Year warranty
  • Compact size - 2.2" H x 3.4" W x 0.5" D
Ships same business day
$249.95
Universal fit. May require additional adjustment or modification.

Genuine Keihin spring, washer, and oring for the fuel screw of FCR and FCR MX carbs.

Just the parts…
Fuel screw spring, washer, o-ring (fuel screw not included)

Ships same business day
$8.95
WR250X '08 - '11
  • Increased air flow over the stock air filter
  • Designed to increase horsepower and throttle response
  • Easily fits inside the factory air box
  • Larger surface area over foam filters which offers longer service intervals in dusty conditions
  • Four layers of premium cotton gauze provides outstanding filtration
  • Washable & re-usable, never wears out
  • One filter will last the lifetime of your bike
Add Air Filter Care Kit
Ships in 3-5 business days
$70.95
  • Unique triple stage foam filter designed for the most extreme conditions
  • Increased protection against silt, water, and sand
  • Allows for extended filter service intervals
  • Can be cleaned, re-oiled, and re-used like a 2-stage filter
  • Neoprene base gives superior sealing to airbox
  • Includes resealable bag for easy oiling and storage
Ships in 3-5 business days
$24.95
WR250X '08 - '11

Dual stage foam: 2 different pore sizes create more trapping area for even the smallest dust particles. Flame laminated foam: Both "Stages" are not glued but heat sealed to provide maximum air flow. Light color foam makes it easier to see where the filter oil has covered and where it has not.

Ships in 3-5 business days
$30.95
WR250X '08 - '11

Twin Air's patented design, high quality materials and superior construction deliver unbeatable performance and protection - and make Twin Air Filters the hands-down choice of more World and National Champions than all other filters combined.

Twin Air's fused layers of open-pore foam and fine inner foam trap even the smallest particles-without restricting airflow!

Ships in 3-5 business days
$30.95
WR250X '08 - '11
  • Designed to fit in the factory air box exactly like original filter
  • The best selling replacement air filter for competition motorcycles and ATVs
  • Unique two stage design allows for easy and complete cleaning
  • Dual layer of foam, can be serviced separately
  • Thin Ultra Seal base is virtually impossible to tear and has a built-in "Grease Groove"
Ships in 3-5 business days
$39.95
Universal fit. May require additional adjustment or modification.

Sold in 6 packs

  • Compatible with many air filter boxes. Easy to install by drilling 1’’ holes in airbox housing and snap fitting vents in.
  • May be cleaned and re-oiled
  • More air flow allows you to add more fuel to your intake mixture, increasing performance.
  • 1" Diameter

Not legal for use on pollution controlled vehicles in the state of California.

Ships same business day
$14.95
Universal fit. May require additional adjustment or modification.

Quick release one-piece clamps that saves space. These are great for fuel lines, controlling wires, and can be used many times.

Comes with 4 each of 8mm, 9mm 10mm, and 12mm.

No special tools needed, from Helix Racing.

Ships same business day
$9.95