Duncan Fatboy 4 , Sparks, or HMF

[81built2hill81]

Im Setting 2 300Ex's Up. One To Flat Track And One To Motocross What Exhaust Is Best For These Applications. Money And Noise Is Not A Factor. I Just Want Raw Explosive Power. Motor wise they are both completly built and strong. This is The Last step to them suspension and motor work and everything else is finished need exhaust to make them scream. Was Looking At Duncan Fatboy 4 , Sparks, or HMF Full Systems. If Any Other Are Better Let Me Know.

[jak1389]

go with sparks or hmf. sparks puts out the best power with modded motors. hmf adds great power for the price and sounds awsome. dont know much about the fat boy tho. sorry.

[d kelley]

Duncan racing Fat Boy4 is a geat pipe. They come with a lifetime warranty and a jet kit with instructions.

[frosti108]

curtis sparks makes an awesome pipe. cant beat it

[high_flyer_969]

what about TC