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GT186 --EX box any one running one
Posted: Wed Dec 22, 2021 9:18 am
by boxofbits
Hi All- Is anyone running a EX box or the EX box ST on the GT186 -- I was thinking I might try one, but want to know how people are finding them first on this kit.

Re: GT186 --EX box any one running one
Posted: Wed Dec 22, 2021 10:27 am
by HxPaul
I'm running an ex-box,Its on a MB race-tour 225,it runs great.
Re: GT186 --EX box any one running one
Posted: Wed Dec 22, 2021 8:20 pm
by Toddy
boxofbits wrote: ↑Wed Dec 22, 2021 9:18 am
Hi All- Is anyone running a EX box or the EX box ST on the GT186 -- I was thinking I might try one, but want to know how people are finding them first on this kit.
I’ve just built and fitted one but not ran it yet
Re: GT186 --EX box any one running one
Posted: Thu Dec 23, 2021 8:54 am
by storkfoot
Yes,just fitted one but have also changed carb at the same time so it is a little bit difficult to compare it like for like with the v1 MB/bgm Clubman that was on before.
I also haven’t done any miles as still jetting the Mikuni TM24.
All that said, I can tell it pulls strongly through the entire range. I can’t say anything to dissuade you from getting one.
Re: GT186 --EX box any one running one
Posted: Thu Dec 23, 2021 8:09 pm
by db67
I've got them on both my ts1 225's & can't fault them , bags of torque , I don't think you will be disappointed if you purchase one

Re: GT186 --EX box any one running one
Posted: Fri Dec 24, 2021 2:38 pm
by hendy
A few years back I ran a tino ancilotti on a gt186 and it was dire. When I changed to a bgm v3, it transformed it.
I know that doesn't directly answer your question, but they are both 48mm headers, so I'd expect similar results. The ex-box has a larger tailpipe so will lose a tiny bit of bottom end but gain at higher revs.
Re: GT186 --EX box any one running one
Posted: Sat Dec 25, 2021 1:41 pm
by simon_t
HxPaul wrote: ↑Wed Dec 22, 2021 10:27 am
I'm running an ex-box,Its on a MB race-tour 225,it runs great.
what gearing and carb pleas Paul ?
Re: GT186 --EX box any one running one
Posted: Sun Dec 26, 2021 10:07 am
by HxPaul
simon_t wrote: ↑Sat Dec 25, 2021 1:41 pm
HxPaul wrote: ↑Wed Dec 22, 2021 10:27 am
I'm running an ex-box,Its on a MB race-tour 225,it runs great.
what gearing and carb pleas Paul ?
I'm running a 28mm dellorto carb and a vijai super mk1 gearbox.( exactly the same as the late Indian gp 200 apart from third is a bit different too the vijai 150 and 4th is totally different)