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Pro Circuit T-4 Slip-On Exhaust
Pro Circuit T-4 Slip-On Exhaust

$297.99 - $440.99
10% Off - Save up to $48.00

Select your bike to see if this exhaust fits
Item #PRC000D

16 Reviews

4.6 out of 5 stars
  •   13 reviews
  •   0 reviews
  •   3 reviews
  •   0 reviews
  •   0 reviews

All Reviews

Fitz

Verified Purchaser
1 year 1 month ago
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Looks good

Put it on my 2017 450x sounds great looks great fit great

Lappel1998

Verified Purchaser
1 year 1 month ago Hood River Oregon
5 out of 5 stars
Durability
4/5
Ease of Installation
4/5
Performance
5/5
Power
5/5
Style
4/5
Well made slip on

I added this when I opened the air box and went to a twin air filter. At the same time I went down one tooth on the front sprocket of my XR650. The combination produce a real power gain that allowed me to access higher torque and even better top end speed, especially at high elevations and up hill mountain pass runs.

Kawi guy

1 year 4 months ago Medford OR
5 out of 5 stars
Performance
5/5
Style
3/5
Will it fit my 2001 klx 300R

I bought a 2001 kxl 300R and was wondering if it will fit

Steve 63

Verified Purchaser
1 year 5 months ago Pickens South Carolina
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
4/5
Power
4/5
Style
5/5
Fit & finish. Top notch. Easy to tune

Perfect fit quality construction I like the
Ease of disassembly for tuning
Just a little loud however

ALLIGONKEY420

2 years 2 months ago Tyonek, AK, USA
5 out of 5 stars
Durability
5/5
Ease of Installation
4/5
Performance
5/5
Power
5/5
Style
5/5
Info

Will this be able to fit the fmf powerbomb header?

justin00

Over 3 years ago Summerland, CA, USA
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Procircuit T4 slip-on

I bought this pipe for my 2006 crf450r.. I love this pipe.. I noticed a big improvement in the power.. and the sound is amazing... you can hear that bike scream from the other side of town.. deep tone...when you hear this bike you know its defiantly not stock. took me no time at all to install and looks better than ever....get this pipe.

Dave

Verified Purchaser
Over 3 years ago Elberta, AL 36530, USA
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Great pipe

It's a great muffler for sure and its tunable. You can do like me and pull all the parts out for the loudest and strongest you can get. Sounds great but not as loud as I thought it would be and it helps unleash a lot of power. Awesome!!!

Ronnie

Verified Purchaser
Over 3 years ago Mesa, AZ, USA
3 out of 5 stars
Durability
3/5
Ease of Installation
2/5
Performance
4/5
Power
4/5
Style
4/5

Good pipe.....but! It showed up w two dings....header side of the pipe wouldn't l slide on because the was dropped. Both ends of the pipe had a dent..other than that the pipe is good

LjHolsten

Verified Purchaser
Over 3 years ago Hollister, CA 95023, USA
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5
Can't go wrong with this exhaust

Made my husband's bike louder and more powerful. Great buy for the price!

Honda1979

Verified Purchaser
Over 4 years ago
5 out of 5 stars
Durability
5/5
Ease of Installation
5/5
Performance
5/5
Power
5/5
Style
5/5

33 Questions

  • Answered:   32
  • Not Yet:   1

Question asked by Brady

Question: Will this fit into my 06 KX450F with a find powerbomb header
Question asked Over 5 months ago
Question answered by Trevor Gearhead
User's contributor status: Top 10
Question answered Over 5 months ago
Answer: Yes. FMF utilizes OEM dimensions.

Question asked by Brigham

Question: What jetting should i switch to if i bought this for my 2007 KX250F?
Question asked Over 6 months ago
Question answered by Tyler Gearhead
User's contributor status: Top 25
Question answered Over 6 months ago
Answer: Jetting properly takes into account a number of different factors "Elevation, Riding Style..etc" and with such I cannot make any suggestions. I would contact FMF prior to installation for suggestions they know their stuff! Or check out local online forums, they are great for finding that kind of info for your particular riding area.

Question asked by Firefighters

Question: Do you have to do anything after you put it on
Question asked Over 8 months ago
Question answered by CodyGearhead
User's contributor status: Top 25
Question answered Over 8 months ago
Answer: All exhaust manufacturers recommend jetting or tuning any bike after installation for optimum performance. It's not absolutely necessary, however.

Question asked by Chrus

Question: What is the best pipe for my Suzuki ltz250 4wheeler want something that sounds good and gives it some more power
Question asked Over 8 months ago
Question answered by DaveGearhead
User's contributor status: Top 1
Question answered Over 8 months ago
Answer: Based on your fitment, I am only showing 2 mufflers we offer for your ATV. We have the FMF Q4 muffler and the Pro Circuit T-4 muffler. The Q4 is quieter and is designed for offroad use. The T-4 pipe is more performance oriented and sounds like what you are looking for.

Question asked by Rad1

Question: I am interested in riding in PA. Their state law requires no more than 99 decibels (db) from the exhaust. What is the expected db reading and can I lower it somehow (e.g., more packing, adjustment, etc)?
Question asked Over 9 months ago
Question answered by Paul
User's contributor status: Top 10
Question answered Over 9 months ago
Answer: The Pro Circuit T-4 Slip-On Exhaust is intended only for race-track use. Pro Circuit does not offer any claims regarding the decibel rating or quieting effect.
We carry other mufflers which are more quiet than the Pro Circuit T-4 Slip-On Exhaust.
To help us to find parts to fit correctly, we will need to know the year, make, and model of your motorcycle.

Question asked by Rad1

Question: I bought ny atv used and it has this exhaust.  How do i know if the spark arrestor is s still installed? And what is the db rating?  
Question asked Over 10 months ago
Question answered by Michael
User's contributor status: Top 10
Question answered Over 10 months ago
Answer: As far as seeing if it has a spark arrestor, point a flash light in the exhaust port, and poke a blunt object in there to see if there is a screen. As far as a DB rating, if it is used, that might actually vary at this point depending on how many hours are on the exhaust, and how well the packing has held up from use.

Question asked by Stitch

Question: I have a 2014 TRX400X and it’s stock. Will I need to re jet it with the pro circuit slip on?
Question asked Over 11 months ago
Question answered by Trevor Gearhead
User's contributor status: Top 10
Question answered Over 11 months ago
Answer: You may or may not need to re jet. Air/Fuel mix, exhaust and elevation are all factors. You may be able to get away with simply adjusting your carb.

Question asked by Bdawg

Question: I just put a T4 on my 2018 raptor 700r and now the bike wont start. Does the bike need a different tune to run with this exhaust?
Question asked 1 year ago
Question answered by DaveGearhead
User's contributor status: Top 1
Question answered 1 year ago
Answer: It should at least start. It sounds like you may have bumped something like an electrical harness. Maybe go back through your work and look for something that is loose.

Question asked by Nickgag

Question: Will this fit a 2019 raptor 700?
Question asked 1 year 1 month ago

Question asked by Gman

Question: Will this fit on my stock 05 rmz250 header?
Question asked 1 year 3 months ago
Question answered by Thumbs
User's contributor status: Top 10
Question answered 1 year 3 months ago
Answer: Yes this will fit your stock header on your 05 RMZ250
1 - 10 of 33

Fitment

See all bikes that this part fits...

See Fitments

# Part Numbers

Product Variant Manufacturer Part #
Standard 4QY00400
Standard 4H04250R
Standard 4H02450
Standard 4H03450
Standard 4H04450
Standard 4H05450
Standard 4H06450
Standard 4H08450
94dB 4H09450
Standard 4S08400SM
Standard 4S03400
Standard 4QH95400
Standard 4K94250
Standard 4K08450X
Standard 4T00400
98dB 4K08250
98dB 4K08450
Standard 4QS03400
Standard 4QS04250
Standard 4QP03500
Standard 4QY01660
Standard 4QY04350R
Standard 4QY06700
94dB 4S09250
Standard 4S05450
94dB 4S09450
Standard 4QH93300
Standard 4QH01250S
Standard 4QH99400
Standard 4QH06450S
Standard 4QH04450S
Standard 4Y05230
Standard 4Y00250
Standard 4QY86350
Standard 4H96200
Standard 4H00400
Standard 4H85600
Standard 4Y08450
Standard 4Y02426
Standard 4Y01250
Standard 4Y03250
Standard 4Y06250
94dB 4Y09250
Standard 4Y03450
Standard 4Y06450
94dB 4Y09450
Standard 4T04625
Standard 4S97650
Standard 4K93650
Standard 4QB00650
Standard 4QH00350
Standard 4QK86250
Standard 4QY08250
Standard 4QY09450S
Standard 4Y07450WR