CRF250L Rally FMF PowerCore 4 Performance Package
CRF250L Rally FMF PowerCore 4 Performance Package
(some optional parts shown in photos)

Home > Dual Sport > Honda CRF250L Rally Parts > FMF PowerCore 4 Performance Package

We've combined several of the most popular performance products for the 2017+ Honda CRF250L Rally into this handy package deal. The package is based around the FMF PowerCore 4 Hex Slip-On muffler, which replaces your heavy and restrictive stock muffler. You can either use your stock header pipe with the PC4 muffler, or optionally add to the package one of FMF's header... either the PowerBomb or MegaBomb. Additional options for the package include an EFI (electronic fuel injection) Controller, which is a plug-n-play device that will help take advantage of your new performance exhaust system and also make your bike run properly. Finally, you can also add a 13 Tooth Front Sprocket if you want to improve your bikes acceleration and low end response.

Header Recommendations:
If you have a 2017+ CRF250L or CRF250L Rally, an aftermarket header pipe is not quite as necessary as on the 2013-2016 models, because Honda spec'd the new bikes with a slightly larger exhaust to begin with, so your stock header pipe is sufficient. However, if you want to maximize performance, one of the FMF header pipes is probably better thanks to their Power Bulge technology. We are using the MegaBomb header on our CRF250L Rally project bike.

The PowerCore 4 Slip-On Muffler included with this package is pretty loud. If you want an exhaust system that is a bit quieter, the FMF Q4 Performance Package is definitely the way to go. The Q4 Slip-On Muffler in that package is louder than stock, and sounds much better, without being excessively loud.

  • 2017+ Honda CRF250L Rally


    One (1) Honda CRF250L Rally FMF PowerCore 4 Hex Slip-On Muffler:
  • Constructed from aircraft grade aluminum and high strength stainless steel
  • Power gains throughout the entire rpm range
  • USFS spark arrestor included
  • Pounds lighter than stock
  • Rugged design for off-road endurance
  • Louder than the FMF Q4 System, but optional 96dB quiet insert available from direct from FMF
  • Made in the USA
  • FMF Part #041569 (2017+ Honda CRF250L Rally)


    ** OPTIONAL: Use stock header pipe, or add an FMF PowerBomb or MegaBomb Header (adds to package price):
  • Stainless Steel Construction
  • Ideal for use with FMF PowerCore4 or Q4 Muffler
  • PowerBomb header makes better LOW to MID-RANGE power
  • MegaBomb header makes power across the entire powerband (LOW, MID, and TOP-END power)
  • PowerBomb: FMF Part #041565 (2017+ Honda CRF250L/Rally)
  • MegaBomb: FMF Part #041566 (2017+ Honda CRF250L/Rally)

    ** OPTIONAL: EFI Controller (adds to package price):
    An EFI (Electronic Fuel Injection) Controller is HIGHLY recommended any time you install an aftermarket exhaust and/or air filter on your fuel injected bike, otherwise you will see little to no performance gains, and the bike may even run poorly. At this time, we offer two different EFI options, the EJK EFI Controller and the JD Jetting EFI Controller. Details below. Each are simple to install and plug into existing wiring using stock connectors.
  • Pre-programmed specifically for a Honda CRF250L
  • Simple install. Plugs into existing wiring using the stock connectors
  • Simple and easy tuning with no dyno required
  • Simple Push Button Adjustment Interface
  • Does not require a computer or software to tune
  • "On-the-fly' tuning. You can make fuel adjustments in your garage or on the side of the road
  • Does Not Interfere with Stock ECU Operation
  • JD Jetting EFI Controller CRF250L - Part #JDHX03 (click for more info)
  • EJK EFI Controller 2017+ CRF250L - Part #9110044 (click for more info)

    ** OPTIONAL: 13T Front Sprocket (adds to package price):
  • Many CRF250L owners swap out the stock front sprocket for a smaller 13T, so we've added it as an option for our FMF performance package. The sprocket is made from case hardened nickel chrome molybdenum steel. Choose the option below if you want us to include the sprocket as part of the package.

  • ** OUT OF STOCK - We no longer carry this item. Try the FMF Q4 Package.

    CRF250L Rally FMF PowerCore 4 Performance Package
    CRF250LR-FMF-PC-PKGRetail Price: $359.99Our Price: $323.99
    Muffler/Mid Pipe: 
    EFI Controller: 
    13T Front Sprocket: 

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