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  • Brand:FMF
  • Model:041XXX

Price : $379.99 $360.99

Available Options:
CRF Model/Year Selection:

FMF Powercore 4 Muffler

NOTE: *** The CRF150F, CRF230F/L/M, CRF250R'04-05, CRF250X, CRF450X'05-17 and CRF450R'05-08 versions are available for back order only - Do not order if you are not able to wait for restock to arrive ***


We developed the PowerCore4 to increase the horsepower and torque throughout the entire power curve and give you a noticeable power increase that is very usable and beneficial, no matter what your riding style or ability is.

  • Space Age internal packing for maximum packing life.
  • Hi-Flo modular end cap.
  • Internal shape of core uses Hi-Flo technology.
  • Enhanced sonic evacuation provides for higher flow and increased power.


I had recently bought th pipe and did not know it was the TI Pipe but it works great and ...

Rated by evan

I recently switched from a Big Gun Exo X with the stock headpipe to this unit and a "Powerbomb" on ...

Rated by michael

I have just bought this bike, and it feels like it has so much more torque, i feel like i ...

Rated by Graham

I meant "pipe" instead of "bike" woops sorry lol. Regard Graham ...

Rated by Graham

just bought the pipe for my crf150f and it has much more power and now sounds greatand is very load ...

Rated by darryl

Just Installed one on my CRF450X and it fits great, sounds great and adds a noticable increase in power over ...

Rated by Peter

I bought a powerbomb header to go with the muffler like the pipe but my factory clamp wouldnt work i ...

Rated by Clint