Cdh66 expansion chamber

Joined
Aug 24, 2018
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#1
Ok, to start off, what is the deal with the racing expansion chambers (mz65, cdh66, bbr tuning deluxe expansion chamber, zeda88 exhaust) are the all the same? Do they increase top speed by a noticeable difference? Better than a banana expansion chamber?
 


Spare_Parts

Active Member
Joined
Nov 29, 2017
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#2
Cdh66 and zeda88 are the same and work.
Know nothing about the bbr pipe.
MZ65 is the best of them .
Cdh and Zeda are more low to mid pipes, you can tell by the long header length.
MZ65 is a top end pipe.
You need to rejet for all.
Banana pipe sucks.
 
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Aug 24, 2018
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#3
Ok, thanks. Just wondering though, the cdh66 will still increase my top end performance over the stock one right? I run my china girl with the baffle out. This gives me decent low and mid torque, but seems to limit my performance at the higher rps as it bogs and four strokes a lot.
 
Joined
Sep 25, 2017
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#4
I have a stock motor with a cdh66 exhaust i only made the engine richer with the needle and runs fine. i didn’t think it gave me much more speed but better low end torque. Pretty sure you need a high compression head with them
 

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