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Senior Member
Ok I installed the Yoshimura Comp Series Silencer with a K&N Intake and lemme tell ya.... Loved it since the first run. Well I know White Bros. Makes a header for the 300ex. Would there be a problem running that header with that slip-on? Thanks for the info.
'04 300ex
AC Nerf Bars
Razr Rear Tires
Yoshimura Comp Series Silencer
K&N Intake
Gone Hazardous Motorsport
there shouldnt be a problem if the header and silencer will fit together
Quad Less
A special thanks to BK PERFORMANCE for the powdercoating.
2009 MMI Graduate/Kawasaki Certified Technician
District 15
Gone Hazardous Racing
aim-gonehazardous221
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Ride Red
The white bros header will fit onto any 300ex slip on pipe.
89 MX 250r- Sold... quadless....
2001 Silverado 2500HD- 33's, duals, intake, ect...
Senior Member
If so then it may have to be the next purchase.Originally posted by hondardr4life
The white bros header will fit onto any 300ex slip on pipe.Would I have to change the jetting any from what it is allready set to? Thanks again.
'04 300ex
AC Nerf Bars
Razr Rear Tires
Yoshimura Comp Series Silencer
K&N Intake
Ride Red
I'm not sure, you will have to run a plug check. I am guessing that you might have to move up one on the main jet.
89 MX 250r- Sold... quadless....
2001 Silverado 2500HD- 33's, duals, intake, ect...
TOOL
You went about this backward. The headpipe is the restrictive part of the exhaust system, not the muffler.
05' BBR Super Pro, street legal, CRF50. Nothing stock but the cases.
1994 TRX90
1983 ATC70
1985 ATC70
1983 ATC200X- For sale, a set of plastics away from being mint. Still have the stock tool kit.
Fast Times!!
Check the inlet on your muffler. Its small and has a hairpin turn.Originally posted by Birddogg
You went about this backward. The headpipe is the restrictive part of the exhaust system, not the muffler.
Honda, Best On Earth
2000 400EX, 1996 300EX and a 1997 LT80 - each with a bunch of custom schtuff on'em!
2001 CR250
2002 KDX220
diesel mechanic
i am running a wb header and an hmf silencer and i love it cant tell you if there is a difference between stock header with aftermarket pipe though because i put them on at the same time.
brad
2006 Suzuki King Quad 700Efi 4x4- warn winch, powermadd hand guards, suzuki shock covers, soon to come HMF pipe, and dobeck tfi controller
1997 trx 300ex
tag x-5 quad bend, maier xc pro handguards, polished dg alloy series nerf bars, 14t front sprocket, polished armidillo out n'back rack, armidillo swingarm skidplate, polished wb e-series works header, red hmf slip-on pipe, K&N power up kit, red gas cap vent hose, prm summit bumper, prm a arm skids, maier kill tether, utah sport cycle engine skid, titax rear rotor, ceet contra seat cover kenda front max and dirt dogs, barnet kelvar clutch pack, burgard cycle axle carrier
TOOL
So what your saying is that you think that the stock header with a slip-on is less restrictive than the stock muffler with a larger diameter headpipe? Have you really looked at the stock headpipe? It's gotta be close to a half inch smaller than any aftermarket header. But hey, what do I know? Hairpin turn huh? Never noticed. All this time I thought my exhaust exited from the rear.Originally posted by 400exdad
Check the inlet on your muffler. Its small and has a hairpin turn.
05' BBR Super Pro, street legal, CRF50. Nothing stock but the cases.
1994 TRX90
1983 ATC70
1985 ATC70
1983 ATC200X- For sale, a set of plastics away from being mint. Still have the stock tool kit.
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