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4.6 out of 5 4.6 (17 reviews)

FMF PowerCore 4 Slip-On

 
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$161.99 - $539.99 $179.99 - $599.99 Save up to 10%!

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The FMF PowerCore 4 Motorcycle Slip-On is a race inspired affordable muffler that does not hold anything back when it comes to performance and quality. With a wide range of fitment options you are sure to find the one that fits your bike!Features

    • Computer designed and dyno tested for every application.
    • Substantial power gains over standard systems.
    • 3-piece design for easy mounting and structural reliability.
    • Features FMF’s exclusive cross-weave internal packing.

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REVIEW SNAPSHOT®

by PowerReviews
FMF PowerCore 4 Slip-On
 
4.6

(based on 17 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Lightweight (7)
  • Easy to use (5)
  • Tough (5)
  • Durable (4)
  • Comfortable (3)

Cons

    Best Uses

    • Off-road (8)
    • Upgrade (8)
    • Racing (6)
    • Replacement part (4)
    • Street riding (3)
      • Motorsports:
      • Casual rider (6), Motorcycle enthusiast (5), Competitive cyclist (4), Mechanic (3)

    Reviewed by 17 customers

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    Displaying reviews 1-4

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    (3 of 3 customers found this review helpful)

     
    5.0

    lots of power

    By hondaxr100

    from Undisclosed

    Comments about FMF PowerCore 4 Slip-On:

    this muffler is sweet it makes my handa xr 100r sound great it is really easy to install and i did it and im 13

    (3 of 3 customers found this review helpful)

     
    5.0

    FMF makes a great pipe

    By TWinTexas

    from Texas

    See all my reviews

    Comments about FMF PowerCore 4 Slip-On:

    Initially I was worried that the FMF Power Core would be too loud for street riding potentially upsetting all of my neighbors but that isn't the case. It has the "just right" sound that announces its intent yet with mild throttle application can roll through a neighborhood almost unnoticed.

    (2 of 2 customers found this review helpful)

     
    4.0

    Good Stuff

    By DRThump

    from Undisclosed

    Comments about FMF PowerCore 4 Slip-On:

    I like it. I had to us a shim on the connector. It was too big in circumference

    (2 of 2 customers found this review helpful)

     
    5.0

    Great price, fast shipping

    By RJShack

    from Undisclosed

    Comments about FMF PowerCore 4 Slip-On:

    Shipped fast, fit great, sounds great

    Displaying reviews 1-4

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    Do you have questions about this product?

    get answers from real customers and in-house experts with AnswerBox.

    31 Questions | 31 Answers
    Displaying questions 1-10Previous | Next »
    • Q:

      is this product approved for Ca as a spark arrestor?
      Asked on 2/9/2013 by JOHN from lAKE ISABELLA CA

      1 answer

      • CUSTOMER CARE

        A:

        Thank you for your question! The Powercore 4 does come with a Spark Arrestor in most cases but will vary per machine. Please provide us with the model this will be mounted on and we can better assist you in letting you know this information. Please get back with us as we are more than happy to help.

        Answered on 2/11/2013 by Anonymous
    • Q:

      hi, i was wondering what size is the pipe on the slip-on side?
      Asked on 10/28/2012 by demetri

      1 answer

      • CUSTOMER CARE

        A:

        Thank you for your question. The size of the piping will vary from bike to bike. This pipe will fit the stock exhaust header mid pipes. Please let us know if there is anything else we can do for you by contacting us by email at Sales@bikebandit.com, Live Chat or by phone toll free at 888-339-3888. We are more than happy to help.

        Answered on 10/29/2012 by Anonymous
    • Q:

      how loud does it get in decibles
      Asked on 9/9/2012 by dave

      1 answer

      • CUSTOMER CARE

        A:

        Thank you for your question. The FMF powercore4 slip on is 96db max sound output and most models below 94db. Please let us know if there is anything else we can do for you by contacting us by email at Sales@bikebandit.com, Live Chat or by phone toll free at 888-339-3888. We are more than happy to help.

        Answered on 9/10/2012 by Anonymous
    • Q:

      I'm trying to find-out if this Slip-On has a Compatible piece to quiet it just a bit ? Thanks
      Asked on 8/21/2012 by IsleOf Man from Boulder CO

      1 answer

    • Q:

      I have a 2010 Arctic Cat DVX 300 and if this slip on wont work could you tell me which one might,i have a sigma jet kit and plan on getting a K&N air filter thanks for the help.
      Asked on 7/22/2012 by Clayton from east tenn

      1 answer

      • CUSTOMER CARE

        A:

        Thanks for the question. This will not work on your machine.

        Answered on 7/23/2012 by Anonymous
    • Q:

      do i need to buy any other parts to make this muffler work if all i have is a stock exhaust for a year 2000 xr 100
      Asked on 7/19/2012 by Rick

      1 answer

      • CUSTOMER CARE

        A:

        Thanks for your question! The FMF PowerCore 4 Motorcycle Slip-On should not require any other parts.

        Answered on 7/20/2012 by Anonymous
    • Q:

      i have an 03 honda xr100 and it gives me two options to choose from, but i dont know whats the difference, they both say aluminum on material.can you please tell me whats the difference, thanks alot
      Asked on 6/28/2012 by speedygonzalez from phoenix

      1 answer

      • CUSTOMER CARE

        A:

        Thanks for your question! Part number #40603 includes a complete system with a spark arrestor. Part number #40602 includes the muffler and header

        Answered on 6/29/2012 by Anonymous
    • Q:

      Will this prodoct improve my dirt bikes power?
      Asked on 6/11/2012 by Anonymous

      1 answer

      • CUSTOMER CARE

        A:

        Good question! Yes this will increase performance. If you like to we recommend rejetting your machine when applying this muffler and even a new K&N filter will help achieve the best performance and power gian form this product.

        Answered on 6/21/2012 by Anonymous
    • Q:

      Will this pipe fit my 2004 crf250x with power bomb header? I was using a Q series before, will I need to rejet or make any other adjustments?
      Asked on 4/4/2012 by Anonymous

      1 answer

      • CUSTOMER CARE

        A:

        Thanks for your question! Yes this will work just fine with that set-up and you won't need to rejet the carbs if you have already done it before.

        Answered on 4/8/2012 by Anonymous
    • Q:

      I purchased the powercore 4 for my 2003 xr400r. I live at about 4500 feet and was wondering if I needed to rejet? I went from stock where would I need to go with jet size?
      Asked on 3/7/2012 by Anonymous from Gillette, WY

      1 answer

      • CUSTOMER CARE

        A:

        Thanks for your question! It is always recommended that you re-jet your carbs after changing exhaust.

        Answered on 3/10/2012 by Anonymous
    Displaying questions 1-10Previous | Next »

    Do you have a question about this product? 

    Play Video How To Video - Dirt Bike Exhaust Installation
    A BikeBandit.com How To Video on Dirt Bike Exhaust Installation produced by Transworld Motocross.
    View How to: Install a New Motorcycle Exhaust System
    Learn how to install a new exhaust system and more at BikeBandit.com!

    Specifications and Options

    Brand FMF
    CARB Notice BikeBandit.com makes no representation or warranty with respect to on-highway use in California or any other state. Consult with the manufacturer as to any such exemptions before installing any add-on or modified emissions-related parts.
    Muffler Material Type Aluminum
    Notes Includes muffler and header, To be used with stock header, With Spark Arrestor, Moto Muffler
    Material Type Aluminum
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