Yoshimura RS-4 Stainless/Aluminum Slip-On

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Yoshimura RS-4 Stainless/Aluminum Slip-On
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    Yoshimura RS-4 Stainless/Aluminum Slip-On

    Our Price: $382.50$445.50

    MSRP: $425.00 - $495.00 - You save up to $49.50 (10% off)

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    Details

      Yosh’s RS-4 Slip-on is a staple in their race-tested lineup that maximizes weight savings and power to give you the ride of your life. The RS-4 is set apart by its pentagonal muffler shape that is done specifically to maximize internal volume without making the entire slip-on unwieldy in size. The front cap of the RS-4 is a newly designed polyresonant chamber that works along with the stepped, two-stage core baffle to lower sound and bump up power output in the mid to top end of your power band. Yoshimura has designed the RS-4 for good looks too with the stainless steel and aluminum giving the slip-on a clean look and the carbon end cap bringing the attitude. It’s more than skin deep though as the RS-4 is built to last seasons of hard riding. It connects to the header pipe using a robust clamp, not just gasket maker, and secures to the bike using a mounting tab that is welded to the muffler instead of riveted for long lasting durability.

      With a twist of your wrist you can find out how much of a difference the Yoshimura RS-4 will make to your bike ’s performance. Get some new gloves, because you’ll need to hold on tight.

      Specs:
    • Includes 94dB sound insert
    • Polyresonant chamber in front cap
    • Clamps to head pipe
    • Welded mounting bracket
    • Increases mid and high range performance
    • Increased packing volume with pentagonal shape
    • Stepped, two-stage baffle
    • NOTE: Depending on application, Yoshimura may recommend rejetting/remapping

    Yoshimura RS-4 Stainless/Aluminum Slip-On Reviews

    Each review submitted enters you into a
    $100 gift card monthly drawing and a
    $500 gift card quarterly drawing!
     
    4.9 / 5.0
    29 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    25
    4
    0
    0
    0
    Value
    4.9 / 5
    Durability
    4.9 / 5
    Ease of Installation
    5.0 / 5
    Fitment
    5.0 / 5
    Performance
    4.7 / 5
    Finish
    4.9 / 5
    Features
    5.0 / 5
    Recommend it?
    Yes (12)
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Thumbs up
    Cannot beat yoshimura quality.
    Fit perfect, sounds good looks better.
    Highly recommend.
    User submitted image
    Added Apr 24, 2018
    April 24, 2018
    Ogden, UT, US
    Age: 15-24
    Purchased
    4 months ago
    Gender:
    Male
    Weight:
    191 - 220 lbs.
    Height:
    6'1 - 6'3
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    3 / 5
    Finish
    5 / 5
    Recommend it?
    Yes
    Easy install, great sound
    I can't say I noticed any power gains, but then again its just a slip on and not a full system. Install was painless and I got it done in about 15 mins. Sounds is great over the stock yz250f raspy noise, I havent used it without the silencer yet other than a quick test after install in my garage. With the silencer installed the bike still growls deep and isn't annoying or shattering any ear drums.
    The best part? This thing looks so killer and really makes the bike look like its factory team! Def recommend

    -m-2017 YAMAHA YZ250F--
    User submitted image
    Added Apr 4, 2018
    April 4, 2018
    Las Vegas, NV, US
    Age: 25-44
    Purchased
    3 months ago
    Gender:
    Male
    Weight:
    191 - 220 lbs.
    Height:
    5'7 - 5'9
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Added power to my bike
    I have the full system and as soon as I put it on I could tell a power difference. It really opened up the top end. The look of it makes it even better. I did however have a popping noise in the cold if I am letting the motor brake for me. Awesome pipe all around

    -m-2012 HONDA CRF450R--
    User submitted image
    Added Feb 16, 2018
    February 16, 2018
    Parker, ID, US
    Age: 15-24
    Gender:
    Male
    Weight:
    161 - 190 lbs.
    Height:
    6'1 - 6'3
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Great Fit and Sounds Great
    Yoshimura RS-4 Stainless/Aluminum Slip-On was a great choice for my 2017 yz250f. Reading these ratings are the reason I chose this product. Fit nice and sounds great!

    -m-2017 YAMAHA YZ250F--
    October 19, 2017
    Hughes Springs, TX, US
    Age: 25-44
    Purchased
    8 months ago
    Gender:
    Male
    Weight:
    191 - 220 lbs.
    Height:
    5'7 - 5'9
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Sounds and looks great
    Fitment was great. Came with a spark arrestor and 3 other inserts for noise volume. Sounds great and can notice a big deifference on the bottom end and mid range of Power! Looks awesome as well!

    -m-2015 KTM 350 SX-F--
    User submitted image
    User submitted image
    October 7, 2017
    Auburn, WA, US
    Age: 25-44
    Purchased
    9 months ago
    Gender:
    Male
    Weight:
    161 - 190 lbs.
    Height:
    6'1 - 6'3
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Awesome pipe
    Bought this for my yz250f 2017. Fits nice and snug, easy install. Came with everything I needed hardware wise. Includes wash plug and noise insert, NO SPARK ARRESTOR. This pipe was only about a pound less than stock and I gained about 1.8hp. Looks awesome on the bike and sounds great.

    -m-2017 YAMAHA YZ250F--
    August 9, 2017
    Gladstone, OR, US
    Age: 25-44
    Purchased
    11 months ago
    Gender:
    Male
    Weight:
    161 - 190 lbs.
    Height:
    6'1 - 6'3
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Great exhaust
    Can't beat the sound of a Yoshi! Perfect fit on my 2016 kx450
    June 20, 2017
    Fairmont, WV, US
    Age: 15-24
    Purchased
    1 year ago
    Gender:
    Male
    Weight:
    161 - 190 lbs.
    Height:
    5'10 - 6'0
    Value
    4 / 5
    Durability
    4 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    4 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    RS-4
    Definitely gives the bike a little deeper growl, plus gives the bike that sweet factory look
    January 3, 2017
    moyock , NC, US
    Purchased
    1 year ago
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Great exhaust
    Great product. Easy to install. Sounds great

    -m-2016 KAWASAKI KX450F--
    November 27, 2016
    Lake stevens , WA, US
    Age: 25-44
    Purchased
    1 year ago
    Gender:
    Male
    Weight:
    191 - 220 lbs.
    Height:
    6'4 - 6'6
    Value
    5 / 5
    Durability
    5 / 5
    Ease of Installation
    5 / 5
    Fitment
    5 / 5
    Performance
    5 / 5
    Finish
    5 / 5
    Features
    5 / 5
    Recommend it?
    Yes
    Yosh slip on
    The yosh slip on has a good look and a great sound to it. Very pleased with my purchase from Rocky Mountain atv
    October 11, 2016
    New Kensington , PA, US
    Age: 15-24
    Purchased
    over 3 years ago
    Gender:
    Male
    Weight:
    161 - 190 lbs.
    Height:
    5'7 - 5'9
    Each question or answer submitted enters you into a:
    $100 gift card monthly drawing and a
    $500 gift card quarterly drawing!
    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 6 questions Browse 6 questions and 23 answers
    Can I buy a new carbon end for mine I knocked a hole in mine ?
    A shopper on Sep 16, 2017
    BEST ANSWER: yes you can, contact Yosh directly, I got the info off their web site, for a RMz 450 the end cap was aprox $135.00 plus rivets and emblem if you wanted it..I spoke to a guy named Don, he was helpful. They even off a option where they will rebuild your existing unit with new parts for you..
    Will this slip on exhaust fit a stock header?
    Landon D on Jun 19, 2017
    BEST ANSWER: Yes, fits onto stock header pipe. Uses exhaust clamp to seal off. Just installed it last week with no issues onto stock header/midpipe
    Will this fit on a fmf power bomb header?
    Owin J on Aug 13, 2017
    BEST ANSWER: The rs-4 is a great muffler very high quality and a perfect fit with the stock head pipe;not sure about the fmf power bomb match up,but if the fmf works with the stock muffler .then it should work with the rs-4, sorry not an exact answer.owin should know if the fmf fit his stock muffler.
    Do you have to remap if going on a stock 2017 kxf250?
    john l on Oct 9, 2017
    BEST ANSWER: It is not necessary but it would probably help reach the maximum performance from your machine.
    Is this muffler u.s. forestry compliant?
    A shopper on Sep 30, 2017
    BEST ANSWER: This is not USFS approved.
    Will I need to adjust the mapping on a 2013 yz450f?
    Mike S on Jan 28, 2017
    BEST ANSWER: For best performance out of your machine, you may need to adjust the mapping after installing this exhaust.
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