Pro Circuit TI-4 Slip-On Exhaust

Pro Circuit TI-4 Slip-On Exhaust
Pro Circuit TI-4 Slip-On Exhaust

$427.99 - $494.99
10% Off - Save up to $55.00

Description See Also: 12 Reviews 13 Questions Fitment
Item #PRC001W

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12 Reviews
4.9 out of 5 stars
5 Star   10 4 Star   2 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Durability 4/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Sounds sikk

This pipe sounds and looks awesome on my 07 crf450, i would recommend going with the full system, the Only thing i didn't like is that the sticker on the very tip of the pipe(not pictured above) got peeled off after a couple hours of ridin due to heat, other than that i love this pipe.

Lockport, NY
Awesome purchase

This pipe is awesome it sounds great and performs great. I noticed more bottom end power on my 250f it also looks good and has held up very good after my abusive riding. I would by this pipe again for any of my bikes!


could not be happier,made my ltr feel unreal

rideforlife419 Top 1000 Contributor
Good buy

the sound and weght is unbelevable! if you dont want to spend too much money than you should buy this pipe

Englewood, Ohio
Best of the best

I have a raptor 700 and this unleashed the beast! I am amazed at the change I got with this silencer... It will easily bring the front end up in 3rd gear! At times I will go out to the garage and start it just to hear it run.... Best purchase in a long time! When my father saw it he asked why did you spend so much... Then when he pulled up at the end of the ride with his eyes open wide he said "Man that thing is a power house!"

Wheatland, Ca
Awesome exhaust

I installed this on my Z400 and it has great sound and definitely noticed a power increase. I will be purchasing one for my CRF450 too.

Saint George, UT
Awesome Pipe

This pipe is one of the more expenive exhausts to buy, i feel i couldn't have spent my money any more wisely. The pipe looks and sounds great.

weston ct

sick slip-on improver power and throttle response greatly eve beter when used with head pipe



Great Bend, KS
Awesome Pipe!

This is a awesome pipe to purchase! It will go about 94dB, well thats what I heard. This is what I would go for if your looking for speed, top end, and loudness, this would be the pipe your dreaming about!

Power freak

I purchased this full system for my 04 z-400 and it required absolutley no jetting. My dads stock z-400 is now consistently eating my roost when we race up competition hill.

Gainesville, GA
Great Choice

WOW..Great pipe. Looks awsome, sounds awsome, light weight and this pipe really performs. What a diffrence this made. You will be happy with this buy

13 Questions
Answered:   13
Not Yet:   0
Q: Is the ti-4 or the fmf factory 4.1 louder? having a quiet pipe isnt a factor where i live.?
2 years 1 month ago
Top 1 Contributor
2 years 1 month ago
A: Both exhaust will have a similar sound db output. Both have quiet core inserts available for them also.
Q: Will this slip-on look the same as the picture it gives you? if not how can i find out?
Over 6 years ago
MotoSport Staff
Over 6 years ago Location: P+RTLAND
A: The exhaust design is going to be the same, but as far as the one that is pictured, the mounting points and bends in the pipe is going to vary depending on what bike you have.

But over all, the exhaust can will look the same.
Q: Can you change the cap on the end of the muffler?
Over 7 years ago
can you change it to the normal cone end, instead of that dented looking one?
MotoSport Staff
Over 7 years ago Location: P+RTLAND
A: If you are running the old ti-4 end cap (pre 2007) you can not change to the newer style end cap.
Q: I have the whie brothers whit e race system will it fit ?
Over 7 years ago
MotoSport Staff Expert
Over 7 years ago
A: This head pipe is desinged to fit the OEM silencer, so if your WB exhaust system worked with the OEM header, than this would fit.
Q: Will this fit a white brothers header ?
Over 7 years ago
MotoSport Staff Expert
Over 7 years ago
A: It all depends on the type of white bros head pipe you have.
Q: Are u only making ur bike louder or does it help with power?
Over 7 years ago
MotoSport Staff
Over 7 years ago Location: Portland, OR
A: It's changes the tone on the bike a little bit to make it sound meaner and it also gives a nice boost in power as well.
Top 100 Contributor Top 250 Contributor
Location: Spartanburg, SC
Q: Does it work with?
Over 8 years ago
Will this slip on exhaust work with my whitebrothers header?
Expert MotoSport Staff
Over 8 years ago
A: Unfortunately we have no way of knowing whether or not this silencer will work with your White Brother's header......
Location: laredo tx
Q: Do u have to rejett your engine for this pipe?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: Portland, OR
A: Depends on where you are located and what you have done to your bike. Normally the instructions that come with the pipe will commend jetting but it's one of those things you have to install it first and see how it responds.. You can always contact Pro Circuit direct for recommendations.
Q: Whats the db?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: Portland, OR
A: 98 due to AMA regulations.
Q: Will this slip on pipe make my raptor 660r quieter then stock?
Over 8 years ago
Over 8 years ago
A: Not really, all aftermarket exhausts ,slip-on and Full system are louder than stock unless u get a quiet core
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