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Discussion Starter · #1 ·
Hi there,

Ive had my HPI Trophy 4.6 Truggy for nearly two years now, and I'm slowly starting to do some upgrades. Im in the middle of upgrading the servos and a 3-shoe clutch.

I wanted to upgrade the exhaust, but i wanted to know a few things:

- Does a new pipe affect the overall performance (Acceleration/Top Speed), if so, by how much?

- Has anyone here upgraded the exhaust on a HPI Trophy 4.6, I'm not sure as to what is compatible with it.

Any help is appreciated,
Thanks :thumb:
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