Hi. Looking to get any kind of help on a good exhaust system for the Suzuki Z400. I would prefer something that sounds nice, with good HP gain, and a reasonable gain in low end.

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Go for the Graydon pipe. It is also priced right.

 

My Trinity is really awsome! The sound is great to, it not to loud but sounds so good. The power gains in the low end and top end are very good to. In my opinion the best

 

I am telling you .....get the LRD.
Let me share a story with you.
Then: Stock Z400, lid removed, baffle out of stock pipe, rejetted stock sprockets.
Me weighing 220 racing bro in law's 250R ported polished, FMF pipe, few other bolt ons, fresh .020 rebuild him weighing 175
Dry Lake bed we take off I am behind from the get go, I never stop losing ground all the way to WOT, where he is still pulling away
Now: Z400, K&N, Pro Design Adapter, LRD system. rejetted, dropped 1 tooth in the front (I should lose top end), I still weigh 220 he still has the same bike and weighs 175.
Its a dead heat, infact I pull the holeshot and remail 1-2 lenghts in front all the way to WOT
I put on the stock counter sproket, I wil by 3-4 an dkeep pulling
THIS PIPE IS THE GOODS
LRD all the Way

 

I like my brothers LRD better then my HMF, but his is a full system and mine is just a slip on. The wives ride the Z400's.

 

The Trinity has had the best overall results and has the best look. It is also guaranteed.

 

Mad up's to trinity, there stuff is hot right now, they are makin the Z's run.