JNM CC X~port

I know the part you're talking about, and I doubt it. OTOH it might have something to offer in the cool look department, but that's probably about it.
 
The Same thing worked on my sons pocket bike when he was racing them. Since it's such a big hole it really helped scavenging and loaded the expansion chamber up a bit more. Couldn't tell ya if it works on these HT's tho.
 
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