MOTO EXHAUST REVIEW: FMF RACING POWERCORE 4 & MegaBomb Header!

Contributing Editor Andre Sergoyan of Dirty Mountain Goats (his YT channel) bolts on an FMF Racing Powercore 4 slip-on exhaust, pairing it up with am FMF MegaBomb Header. Did this exhaust combo yield the power delivery & performance that he was looking for from his 2016 Yamaha YZ250FX? Watch the video to hear his observations and his bottom-line while riding the Pac NW mountain trails.
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