Just curious if anyone has seen oversize pistons for these funny 3 wheeled contraptions.  I acquired one recently, but I'm having a tough time finding anything but standard size pistons.  Have a good day everyone, thanks for any help!

Treatland in California specializes in the smaller bikes and vehicles...  if you don't see what you need, contact them.  They found and ordered me some hard to find parts for one of my DT50's a few years ago.  They are helpful and knowledgeable with a passion for the small vehicles.

Hint:  Sign up with your email...  several times a year they email a code that gives a discount on everything in the store. No spam.  All I get is the sale notices.

I searched "Treatland Honda Gyro" on Duck Duck Go and this was the first result...  www.treatland.tv/malossi-70cc-47mm-cylin...gyro-kit-31-6170.htm  So they obviously have some knowledge of the Gyro.

Do you have the old piston out of the engine ? if you can put up some measurement i can cross reference it to other honda pistons.

Bore Size
G-Pin Dia
Measure from the top of the G-pin to the edge of the crown

Thank you Markt for that info. Yes I saw the big bore kit too lol.. I'm gonna wait, because it looks like I'd have to do some extensive case work to make it fit. I believe mine is an 86', USA model.
Paul, I'll get some measurements soon. 10mm pin and I believe 41mm stock bore. I've read that honda spree pistons work, but cannot find any oversize for that either.

I doubt you have to machine the cases...  Malossi kits are generally bolt on but the Treatland reviews have some minor mods for install on US models.  Anyway, calling Treatland and asking them about pistons and/or the big bore kit might get you some answers...  they've always been very helpful. 

That is if Paul at PJME can't find you something...

P.S.  Malossi sometimes "exaggerates" the displacement of their kits from what I read in the past.

I think it maybe this one

MODEL NT50
BORE SIZE 41.00 mm
CROWN HEIGHT 15.50 mm
OVERALL LENGTH 45.00 mm
DOME HEIGHT 4.00 mm
G.P. ⌀ 10.00 mm
RING PEG POSITION 14.00 mm