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Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450

  • Part #: 431824
  • Manufacturer Part #: 4QH04450

MSRP Price: $574.95

Our Price: $517.46

You Save:
$57.49 (10%)
1 on Hand

Overview of Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450

  • Designed to boost output throughout the powerband
  • Fine-tune your power delivery by changing end caps
  • Lighter than stock
  • Extruded 6061 aluminum silencer resists oxidation and features long-lasting packing material
  • Quick access to the U.S. Forest Service approved screen spark arrester through removable end cap tip
  • System includes connector pipe and headpipe

Specs for Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450

Color - Primary Silver
Style - Exhaust Tip Canister Muffler
Type - Exhaust Complete System w/Spark Arrestor
Units Each
Weight 8.37 lbs

Specs for Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450

Color - Primary Silver
Style - Exhaust Tip Canister Muffler
Type - Exhaust Complete System w/Spark Arrestor
Units Each
Weight 8.37 lbs

Fitment for Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450

See if this part fits your ride

Part 431824 fits the following machines

Honda
  • 2005 Honda TRX450R Sportrax
  • 2004 Honda TRX450R Sportrax
4.4 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
7
1
0
0
1
Finish
4.9 / 5
Performance
5.0 / 5
Finish
5 / 5
Performance
5 / 5
Great exhaust for racing
It sounds and looks awesome. The only problem is it is so darn loud. Fit was perfect but it touched the clutch cable on my Z50 and I need to make a bracket to hold the cable off the header.
September 29, 2009
Finish
5 / 5
Performance
5 / 5
Great Performance Boost
I bought this pipe to increase performance as the stock exhaust was very restrictive. The new pipe bolted up easily to the machine, but was resting on the pull start handle. This was a problem that I needed to correct. I ended up having to heat up the pipe and bend it so it would not touch the handle. This did not go smoothly... For the money this kit cost, fitment should have been better. I also installed a jet kit at the same time which has the machine running perfect. Overall I am very pleased with the performance increase and construction quality of the kit.
August 31, 2010
Finish
4 / 5
Performance
5 / 5
excellent exhaust
I purchased this exhaust system a week ago, and I must say it's the best! I put this on my 2005 crf150f and the increase in horsepower and throttle response is 10x better! On a side note I did have to pry apart the rear mounting bracket a little bit. And also the pipe sounds really great......it's like night and day compared to the stock pipe......it's also much louder by at least 60% I don't think my neighbors like the sound haha.....bottom line get this for horsepower and throttle an sound increase you won't be disappointed!
December 25, 2013
Finish
5 / 5
Performance
5 / 5
2005 CRF 230F
This PC exhaust system is worth every penny. Sound & quality is beautiful. The sound is quiet thru loud depending if you are using the quiet insert that is supplied. The reason why I gave fitment 4 stars is because I had to pry the welded brackets on the muffler wider to go over the rubber grommets on the back subframe where the long bolt goes through.
July 5, 2012
Finish
5 / 5
Performance
5 / 5
Great pipe, lots of power
Bought this for a 2006 crf230f and it definitely increased power and has a great sound.
June 22, 2011
Finish
5 / 5
Performance
5 / 5
excellent exhaust
Fits great Sounds even better highly recommend this system
January 9, 2012
Finish
5 / 5
Performance
5 / 5
PC Exhaust
It gave my KLX nice sound, quicker throttle response and better performance across the powerband. I dont think you can go wrong with Pro Circuit products.
February 11, 2013
Finish
5 / 5
Performance
5 / 5
Pro Circuit T-4 exhaust
Put this on a 2002 TTR 125. When the exhaust arrived I was a little nervous because it came in 2 pieces, the muffler and the exhaust pipe. I thought I would have to make some alterations to the mounting to get it to fit. But it mounted perfectly without any modifications to the mounting brackets. This system was added for extra airflow after we "swiss cheesed" the airbox and rejetted.
Sounds real throaty and makes the 125 sound like its got some muscle. Also, it is noticeably lighter than the stock pipe. Kind of pricey, but our options were limited for the TTR and we needed more airflow thru the motor.
June 3, 2012
horrible fitment!!!!!!!!!!
on an 2003 Polaris scrambler 500 , most horrible fitment on this system.the pipes are so close to the plastics you can't even put on the shield(YOU WILL MELT IT)THE BENDS ARE NOTHING LIKE THE OEM MANUFACTURERS.DON'T KNOW WHICH ENGINEER HAD A BAD DAY WHEN HE WAS DESIGNING THIS ONE.OWE YEAH! , AND FOR 450.00$ IT DOESN'T EVEN COME WITH CLAMPS OR HARDWARE.
December 2, 2015
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Instructions and Manuals for Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4QH04450