I was curious witch you think is the best exhaust system for the 450. I am definatley considering the DMC Alien pipe. Which do you like and what are the horse power changes??
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Junior Member
I was curious witch you think is the best exhaust system for the 450. I am definatley considering the DMC Alien pipe. Which do you like and what are the horse power changes??
Junior Member
I bought a LRD Pro 4 cause LRD makes badass pipesand it is Chrome. and it comes with jets and a K&N with outerwears. It should be here this week so I'll let you know how good it is and post a pic of it on my bike. when I called K&K to order the LRD they told me that the Duncan Fat Boy 4 is one of there favorite pipes for the YFZ cause the power gains are clsoe to as good as the LRD and it isnt as loud.
I would Imagine the Curtis Sparks pipe is better than a DMC too.
2004 YFZ 450
LRD: Pro 4 Series Full System Chrome Exhaust,
GYT-R: Nerf bars, Chassis Skid Plate, Swingarm Skid Plate
Duncan Racing: Chrome Bumper, Brake Blockoff, Chain Guard
ITP: Holeshots
K&N: Airfilter w/ Outerwears no lid
Pro Design: Pro Flow Intake, Kill Switch
Jets: 178 main, 58 Pilot, Clip 6th postion
MSR: Low ATV handlebars
Shock Pros: Red Flame Shock Covers
AC Racing: Rear Grab Bar
2004 TRX 450R
Duncan Racing: Chrome Bumper, Brake Blockoff, Graphics kit, Seat cover, Chain Guard
MSR: Low ATV Handlebars
Shock-Pros: Red Flame Shock Covers
AC Racing: Pro Peg Nerf Bars, Rear Grab Bar
For exhausts I would say either HMF or one of the newer sparks. I am actually selling my Blue Full system HMF. My friend has the sparks and we are even till about 5th gear and I pull him. HMF is a great pipe. Id get that..or ill sell you mine.
Junior Member
I HAD A DMC ON MY RAPTOR AND HAD NOTHING BUT PROBLEMS WITH IT, THAT PIPE IS JUNK. I USE A YOSH COMP PIPE AND LOVE IT SOUNDS GOOD AND HAS AN EXCELLENT POWERBAND.
JUST MY OPINION
~ 04 Yfz 470 ~ Je 12-1 piston ~ Yoshimura trs exhaust system ~ Esr intake ~ Cam mod ~ Trail tech -4 flywheel ~ anti vibe +1 stem ~ Tag t2 bars and clamps ~ X factor grab bar ~ K&K graphics kit ~ Zip tye air fuel screw ~ 178 mj 50pj ~ Ncvq needle on fifth clip ~ Srp steering dampner ~ Cfm oil tank and in line cooler ~ Jl 15 39 gearing ~ did x ring chain ~ Roll design pegs, heel plates and nerf bars ~ Diamondplate warning labels ~ Maxxis razor 2 front and rears on Itp baja rims~
dune yfzer
it matters what kind of riding you dune, the best all around exhaust is sparks and prob HMF
MTX YFZ
Member
My vote is for the HMF. I always here good things about the Sparks pipe as well.
'04 YFZ450 - Blue
- HMF Full System
- Uni Filter / Removed lid
Senior Member
I have a pro 4 series exhaust for my 450r!
Manny
-2004 TRX450r
-2004 YFZ450
-2004 Banshee
Senior Member
my alba made a huge increase. it pulls very hard and has good snap on the track
04 LE Yfz
alba exhaust
Aluminum air box, k&n filter
HEP batt box
ac blackline nerfs,bumper
omf beadlocks
douglas ultimates
kenda klaw mx
13:1 piston
motion pro twist
pro design kill
zip tye screw
billet decomp plug
pep roller relocator
denton stabalizer
Quad speed number plates
Flexx bars
Metal Craft LT a arms
Elka Quad rates
Derisi Rebuild rear
Bare Gusset Kit
Blue powder coat
GWC Rebel Graphics
06 Sponsors AC Racing, alloy mx, fasst company, Scott USA. M2R helmets
Senior Member
i think i'm getting the balance or a fat boy
GNCC #90
i got a pro 4 full system on my YFZ, an i have yet to ride another YFZ tht pulls harder or hits harder, then mine. Only prob. i've had is it needs to be repacked a lil more hten what i would liek ot do. The FMF T-4 is also a good pipe i 've noticed.
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