Free 3-Day Express Shipping on Orders Over $99*

Shopping for Parts? Select Your Bike: Manage Saved Bikes Manage Saved Bikes Sportbike Dirt Bike Sport ATV Utility ATV Sportbike Cruiser Make Year Model

M4 Undertail Slip-On Exhaust

Retail: $419.00 - $1,090.00
$376.99 - $980.99
Please Select a Bike:
It appears you may have cookies turned off in your web browser, or are using a browser that does not support cookies. You must accept cookies to use our site. For questions call us at 1-888-676-8853.
M4 Undertail Slip-On Exhaust

Product Description

M4 Exhaust manufactures exhausts which add power and a more race-inspired sound to your bike as well as lowering the overall weight. Extra time on research and development ensures your exhaust has the ultimate in quality workmanship, ease of installation, and the best performance possible for your motorcycle. M4 Exhausts are available in both Standard / Race and GP Series mounting configurations.

  • The Standard / Race Series system mounts in the stock position; M4 supplies you with a race bracket to allow the removal of your passenger foot pegs, if desired.
  • Whether hitting the track or sharing a ride with someone, this system has you covered.
  • The M4 Standard / Race Series Slip-On Exhaust has a built-in baffle, tuning the exhaust note for a crisp head turning sound.
  • Unique silencer packing gun insures even distribution of packing material.
  • M4 has built a quality fitting exhaust that is a breeze to install; all mounting hardware and instructions included.
  • The Standard Undertail slip-on exhaust system will shed some weight over stock to give your sport bike improved power-to-weight ratio.
  • Bolt-on and slip-ons systems utilize the stock header assembly, but remove the stock canister's restrictions, for better sound and an increase in power.
  • Up to 7 horsepower gain.
  • Standard Undertail Slip-On Exhaust with polished canister.

Note: All M4 systems are designed and intended for closed-course competition use only.

  • Customer Reviews
  • Ask an Expert
  • Also Offered For
5.0 out of 5 stars
5 star   3
4 star 0
3 star 0
2 star 0
1 star 0
nino1 Location: Kapolei, HI
Tato81 Location: Dunkirk ny
1-3 of 3
Ease of Installation
Top 1000 Contributor Verified Purchaser
Location: Kapolei, HI
M4 exhaust

Great look for my yellow and black R1. The sound and power difference is very noticeable.

Location: Dunkirk ny

I recommend them for anyone

Location: Clearwater FL

This is a great pipe, sound, and looks. For the price it can't be beat. Gets rid of that nasty little heater next to your leg as well, and lets your bike breath. Remeber, a motor is just an air pump, the faster you move air through it, the faster you go, and these things really open it up.Very easy to install as well, which is a real plus since so little is on the 08 R1's. If your looking for a pipe, get this one, you will love it.

1-3 of 3
Total Questions (3)
Questions with answers:
Questions without answers:
1-3 of 3
Agent47 11 days ago
Do I need to make any modification to the bike or can I just mount it after removing the stock mufflers? Also how loud is it?
Is it louder than the Leo Vince?
MotoSport Staff Expert
9 days 22 hours ago Location: Portland, OR, USA
No modification would be required. You would simply remove your stock Mufflers and install the M4 mufflers in their place. Unfortunately, M4 does not provide DB levels for each of their exhaust systems but do say the M4 slip on will increase the performance and the sound of the bike.
greyghst15 2 months 14 days ago
Is this exhaust a dual outlet for the 04 honda cbr600rr?
Expert MotoSport Staff
2 months 14 days ago Location: Portland, OR, USA
This M4 exhaust for your 2004 Honda CBR600RR would still be one single undertail muffler.
Fong Over 5 years ago
Do i have to cut my stock EXHAUST PIPE to put on the slip-on.?
From what i see the '05 CBR600RR pipe is a straight pipe to the header, does this mean i have to cut the pipe off and put the performance exhaust slip-on onto it. or is there a stock cut on thepipe somewhere closer to the header that i dont see. Also how long is the slip-on pipe for the Jardine RT-1 dual exhaust and the Yoshinura slip-on. thanks
MotoSport Staff Expert
Over 5 years ago
no you do not. it will mount just like the stock muffler.
1-3 of 3

Be Informed

Be Confident

Part of the Backcountry Family:
Copyright © 2004 - 2014 MotoSport, Inc. All Rights Reserved. Selected content copyright and trademark respective companies, used with permission.