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M4 Quiet Insert - Db Reducer
M4 Quiet Insert - Db Reducer

$25.00 - $50.00
11% Off - Save up to $3.00

Description See Also: 1 Review 6 Questions Part Numbers
Item #MPE001C

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1 Review
5 out of 5 stars
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All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Nice and quiet

First, I LOVE the sound of the unrestricted GP exhaust on my Honda 919. For long trips, though, it becomes quite fatiguing even with ear plugs/buds and a full faced helmet. With the insert in at highway/interstate speeds I can barely hear the exhaust over wind noise. Long rides are much more enjoyable.

Don’t get me wrong I like a good sounding loud exhaust as much as the next cat, with this insert you have the best of both worlds. (I’ve had it in and out several times.) It will take you longer to walk to your tool box to find your big snap ring pliers than it will to actually install/remove the insert. On that note you do need some pretty good sized snap ring pliers.

6 Questions
Answered:   6
Not Yet:   0
Q: M4 gp dB killer which one can fit my exhaust , my bike 2014 zx6r
2 months 8 days ago
Top 10
2 months 8 days ago
A: That depends on what exhaust you have.
Q: Which size would you recommend for Danmoto Highwayman fitted on my Kawasaki Vulcan S 650 ABS 2017? ID is 60 mm and OD is 105 mm of the exhaust.
2 months 12 days ago
Marty McMotorbikeRider
Verified Purchaser
2 months 12 days ago
A: This insert is made only for the M4 GP exhaust.
Q: I was wondering what baffle I would need for a m4 carbon muffler for a 2001 SV650 without a screw hole on the inside?
3 months 23 days ago
Top 10
3 months 23 days ago
A: The inserts that don't use any screws are the GP style inserts. They utilize a snap ring instead of a screw.
Q: Will this db reducer fit a Radiant Cycles Shorty GP Exhaust on '07 yzf r6s?
3 months 24 days ago
Tyler Gearhead
Top 10
3 months 24 days ago
A: The M4 DB Reducers are designed to work M4 exhausts only and will not work with your application.
Q: Which would I need for my 1981 Honda CB900c 4x1 exhaust?
3 months 26 days ago
Top 10
3 months 26 days ago
A: This quiet insert is specific to the M4 GP exhaust system.
M4 Quiet Insert - Db Reducer
Q: M4 quiet insert
Over 7 months ago
Hi guys which baffle to I need for my Yamaha Mt 07 m4 exhaust
Top 10
Over 7 months ago
A: 2014-17 Yamaha FZ-09/MT-09 Available dB reducing muffler inserts: Stage 1 part # Q5 (Installed), Stage 2 part # Q4
# Part Numbers
Product Variant Manufacturer Part #
Q1 Stage 1 GP Q1
Q3 Stage 2 GP Q3
Q4 Stage 2 Q4
Q5 Stage 1 Q5
Q6 Stage 2 Q6
Q7 Stage 1 Q7
Q8 Stage 1 Q8