Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe - 4S90250
Designed to boost output throughout the powerband
Fine-tune your power delivery by changing end caps (see T-4 Replacement End Caps under Exhaust Replacement Parts and Accessories)
Lighter than stock
Extruded 6063 aluminum silencer resists oxidation and features long-lasting packing material
Quick access to the U.S.F.S. approved screen spark arrester through removable end cap tip
304 stainless steel head pipe, S-bend, inlet cap, one-piece exhaust flange, stand off and springs give works look, performance and durability
This is a complete system that includes a head pipe
NOTE: Not all products are legal for sale or use on pollution controlled vehicles. Check your local laws and the manufacturers information
NOTE: There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Discoloration (blueing) is the result of tuning characteristics, cam timing, carburetor jetting, overheating, etc., and is not caused by defective manufacturing. See the CHEMS/LUBES section for products that will help prevent or remove blueing.
NOTE: Installation of a new exhaust system may change your motorcycles fuel-air mixture requirements. Please consult the exhaust manufacturer directly with questions regarding any modifications that may need to be made during. or after, installing their product. If a jet kit or fuel processor is recommended, see the FUEL/INTAKE section
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.
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!
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.
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.
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.