Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines
Pro Circuit T-4 S/A Silencer
  • View Larger
  • Videos

Customer rating on this product:

Read reviews (21) | Write a review

Sales Live Chat

Pro Circuit T-4 S/A Silencer

Our price: $314.99$439.99

MSRP: $374.95 - $524.95 - You save up to $84.96 (16% off)

View Product DetailsSee all machines the Pro Circuit T-4 S/A Silencer fits.

Select type, make, model and year above

  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

  • Returns

    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    Live chat: Click here (Leave email if after hours)
    Email:sales@rockymountainatv.com
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Standard Time)

    The Pro Circuit T-4 silencer is constructed of lightweight brushed aluminum and stainless steel, The T-4 silencer is designed to provide increase in horsepower making so your machine can go faster and have a stronger response during acceleration. The rider will have the ability to tune his bike performance with a selection of end cap that will change the power-band of the bike around the need of the rider. The Pro Circuit T-4 can also be used with the OEM stock or even the Pro Circuit standard head pipe. When it comes to racing the Pro Circuit T-4 silencer is one of the most sought after four stroke performance mufflers on the market today. The Pro Circuit T-4 silencer includes the US Forest service approved screen spark arrestor through removable end cap tip. So if you want to improve the power, performance and torque on your machine then the T-4 silencer is just want you are looking for.
  • Features a round aluminum body with extruded aluminum end cap and a nickle plated connector.
  • Quiet core insert available for reduced noise

Pro Circuit T-4 S/A Silencer Reviews

Your review could win you a $100 or $500 gift card!

Each review submitted enters you into a $100 gift card monthly drawing, and a $500 gift card quarterly drawing!

0 of 0 people found this review helpful.

Rancher 350 ES

Comments On Jun 26, 2014:Installed this on our Honda Rancher ES and it brought it to life. Great quality and fantastic sound. With ITP tires and wheels as well as this exhaust, this Rancher has some attitude.

Was this review helpful?

0 of 0 people found this review helpful.

good addition,

Comments On Mar 23, 2014:great addition to bike

Was this review helpful?

0 of 0 people found this review helpful.

Alright

Comments On Aug 21, 2013:Prolly wouldn't buy another one only bought because of the price

Was this review helpful?

0 of 0 people found this review helpful.

What can you say that hasnt been said

Comments On Sep 12, 2012:Killer pipe that is under the 96db limit(i checked) and gives a bit more oompff to low and mid range. Used on an 08 450X. Highly Recommended.

Was this review helpful?

0 of 0 people found this review helpful.

2004 KX250F

Comments On Feb 01, 2012:I already had a Pro Circuit silencer on my bike but I bent it in a crash. Bought another new one and it fit great looks great. Its also a lot quieter than my old one which i like.

Was this review helpful?

1 of 2 people found this review helpful.

Don't Buy!!!!!!!!!!!

Comments On Sep 16, 2011:This exhaust is horrible! , Bought for 2008 yz250f and is completely trashed! This is a waist of money. Wont buy again.

Was this review helpful?

1 of 1 people found this review helpful.

Awesome pipe but not so awesome fit

Comments On Jun 13, 2011:This pipe came installed on my 06 YFZ450...I noticed that the slip-on was noticably larger that the stock head pipe. The exhaust leaks but nothing to worry about. I would deff. concider this pipe again, but I do think that the design isnt the greatest because both mounting tabs are broken on my pipe.

Was this review helpful?

0 of 0 people found this review helpful.

Looks good, Sounds ok, Performance questionable.

Comments On Oct 05, 2010:Purchased for 2008 Kxf250. Looks good, sounds good, but not any better then stock on this bike, Performance i think it added a bit of over rev. Combined with header it added bottom mid and top, not alot but noticeable. Overall looks nice, performs nice, sounds nice.

Was this review helpful?

2 of 2 people found this review helpful.

trx400ex quality???

Comments On Oct 04, 2010:good pipe from stock but has some problems i have a trx 400ex 2005 bought the slip on and didnt seat up to the stock head pipe all the way, left 1/4in gap and after runing in the dunes it started to rattle and can see the blow by on the header pipe. the mounting bracket broke after a year. matbe it was just this one,but i dont want to take another chance.

Was this review helpful?

1 of 3 people found this review helpful.

Very Tough!

Comments On Mar 05, 2010:I accidently 12 o-clocked my quad off of a jump and landed right on the pipe. It didn't even get scratched! Great sound and improved low and mid-range power

Was this review helpful?

If you cannot see the videos you may need to upgrade Adobe Flash Player. Get Adobe Flash Player

Instructional

How To Repack A Silencer For Your ATV Or Motorcycle

Frequent Buyer ProgramParts Finder